US20090014020A1 - Smoking article with valve - Google Patents
Smoking article with valve Download PDFInfo
- Publication number
- US20090014020A1 US20090014020A1 US12/073,542 US7354208A US2009014020A1 US 20090014020 A1 US20090014020 A1 US 20090014020A1 US 7354208 A US7354208 A US 7354208A US 2009014020 A1 US2009014020 A1 US 2009014020A1
- Authority
- US
- United States
- Prior art keywords
- valve
- filter
- smoking article
- smoking
- operational pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/041—Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/20—Cigarettes specially adapted for simulated smoking devices
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/17—Filters specially adapted for simulated smoking devices
Abstract
A smoking article having a cylinder of smoking material, a hollow tube within the cylinder of smoking material, and a filter attached to the cylinder of smoking material. The filter includes an upstream segment containing an aerosol former, a downstream segment containing a sorbent material, and a valve positioned between the upstream segment and the downstream segment. The valve has a first position in which the valve is closed and a second position in which the valve is open and allows the passage of smoke through the filter.
Description
- This application claims priority under 35 U.S.C. §119(e) to U.S. provisional Application No. 60/906,117, filed on Mar. 9, 2007, the entire content of which is incorporated herein by reference.
- It would be desirable to have a smoking article having a structure which controls the amount of total particulate matter (TPM) in the mainstream smoke of a smoking article and/or prevents or limits the migration of volatile aerosol formers or other flavorants to other filter components.
- In accordance with one embodiment, a smoking article comprises: a cylinder of smoking material; a hollow tube within the cylinder of smoking material; and a filter attached to the cylinder of smoking material, the filter comprising: an upstream segment containing an aerosol former; a downstream segment containing a sorbent material; and a valve positioned between the upstream and the downstream segments, wherein the valve includes a first position in which the valve is closed and a second position in which the valve is open and allows the passage of smoke through the filter.
- In accordance with a further embodiment, a smoking article comprises: a cylinder of smoking material; a hollow tube within the cylinder of smoking material; and a filter attached to the cylinder of smoking material, the filter having a segment containing an aerosol former, a valve having a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter, and at least one segment of filtering material.
- In accordance with another embodiment, a filter for a smoking article comprises: an upstream segment containing an aerosol former; a downstream segment containing a sorbent material; and a valve positioned between the upstream segment and the downstream segments, wherein the valve includes a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter.
- In accordance with a further embodiment, a method of making a smoking article, comprises: forming a tobacco rod portion of the smoking article by placing smoking material between a hollow tube and an outer layer of wrapper paper; forming a filter portion of the smoking article having a plurality of segments comprising an upstream segment containing an aerosol former, a valve having a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter, and at least one filtering material segment; and joining said tobacco rod portion in end-to-end relationship with the filter portion.
-
FIG. 1 is a perspective view of a smoking article according to one embodiment having a tobacco rod with a concentric hollow tube and a filter having a valve. -
FIG. 2 is a cross sectional view of a smoking article having a tobacco rod with a concentric hollow tube and a filter having a valve. -
FIG. 3 is a cross sectional view of another embodiment of a smoking article having a plurality of ventilation holes or perforations on a downstream side of the valve. -
FIG. 4 is a cross sectional view of another embodiment of a smoking article having a plurality of ventilation holes or perforations on an upstream side of the valve. -
FIG. 5 is a cross sectional view of another embodiment of a smoking article having a plurality of ventilation holes or perforations about a location on the tobacco rod. - As shown in
FIG. 1 , asmoking article 10 in the form of a cigarette includes arod 20 of smoking material 21 (FIG. 2 ), contained in a circumscribingouter wrapper 30. Theouter wrapper 30 is typically a porous wrapping material or paper wrapper. Therod 20 is typically referred to as a “tobacco rod” and has a lit end orupstream end 12 and a tippedend 14 at which afilter 40 is attached to thetobacco rod 20. The smokingmaterial 21 is preferably a shredded tobacco or tobacco cut filler. However, anysuitable smoking material 21 can be used. - The
smoking article 10 also includes afilter 40 adjacent to the tippedend 14 of thetobacco rod 20 such that thefilter 40 andtobacco rod 20 are axially aligned in an end-to-end relationship, preferably abutting one another. Thefilter 40 has a generally cylindrical shape, and the diameter thereof is essentially equal to the diameter of thetobacco rod 20. The ends (i.e., upstreamend 16 and downstream end 18 (i.e., mouth end or buccal end) of thefilter 40 are open to permit the passage of air and smoke therethrough. - The
filter 40 preferably includes a plurality offilter materials 42, usually circumscribed by a plug wrap orsegment wrap 44. The plug orsegment wrap 44 is preferably a paper product which optionally incorporates a carbonaceous material. Thesegment wrap 44 may circumscribe the total length of thefilter 40. Thefilter 40 is attached to thetobacco rod 20 by atipping paper 50, which circumscribes thefilter 40 and an adjacent region of thetobacco rod 20. Thetipping paper 50 is typically constructed of a paper web; but, any suitable material can be used. A ventilated or air dilutedsmoking article 10 can be provided with an air dilution means, such as a series of ventilation holes orperforations 52, each of which extend through thetipping paper 50 and optionally thesegment wrap 44. -
FIG. 2 shows a cross sectional view of a smokingarticle 10 having atobacco rod 20 with a concentrichollow tube 60 and afilter 40 having avalve system 70. The concentrichollow tube 60 can be incorporated into thetobacco rod 20 of thesmoking article 10, in such a way that thetube 60 can alter the usual total particulate matter (TPM) delivery profile of a conventional cigarette or smokingarticle 10. Thetobacco rod 20 is comprised of ahollow tube 60, surrounded by asmoking material 21, such as a tobacco filler material, and an outer layer of cigarette wrapper (paper) 30. Thehollow tube 60 is preferably centrally or concentrically located within thecylindrical rod 20 ofsmoking material 21, and having afirst end 61 on thelit end 12 of thetobacco rod 20, and asecond end 63 on the tippedend 14 of thetobacco rod 20. - The
hollow tube 60 preferably extends from the tippedend 14 of thetobacco rod 20 towards thelit end 12 of thetobacco rod 20 with anoverall length 64 of about 20 to 100 millimeters. The internal orinner diameter 66 of thehollow tube 60 can vary from about 0.5 to 5.5 millimeters, and is preferably about 1.5 to 3.5 millimeters, and more preferably about 2.0 to 3.0 millimeters for atobacco rod 20 with anouter diameter 67 of about 6.0 and 10.0 millimeters and anoverall length 65 of about 40.0 to 125.0 millimeters. It can be appreciated that one or more non-concentrichollow tubes 60 also can be used. In use, the delivery profile of thesmoking article 10 including the amount of tar per puff will generally be determined by thelength 64 and theinner diameter 66 of thehollow tube 60, as well as the position ofhollow tube 60 within thetobacco rod 20. - As shown in
FIG. 2 , thelit end 12 of thetobacco rod 20 is fully filledtip 68 with asmoking material 21, which extends from thelit end 12 of thesmoking article 10 to thefirst end 61 of thehollow tube 60 and has anoverall length 69 of about 2.0 to 30.0 millimeters. It can be appreciated that thelength 69 of the fully filledtip 68 ofsmoking material 21 can vary depending on thelength 65 of thetobacco rod 20 and the desired delivery profile. Thesecond end 63 of thehollow tube 60 is positioned on the tippedend 14 of thetobacco rod 20 adjacent to thefilter 40. - The
hollow core tube 60 can be constructed in a number of ways, including a blended tobacco cut filler rod, or other combustible materials such as cellulose-based filler, with a hollow center. Thewalls 62 of thehollow tube 60 can be made out of combustible sheet material such as paper, chemically treated paper, and tobacco-based sheet materials. The sheet materials of thehollow tube 60 can be chemically treated with burn modifiers, ammonium mono-phosphate, flavorants and aerosol formers. Alternatively, the hollow core ortube 60 of thetobacco rod 20 can be molded, extruded or formed of combustible materials such as blended tobacco or cellulose-based materials using suitable binders such as pectin, starch, and guar gum. In addition, it can be appreciated that thehollow tube 60 can be constructed to collapse upon itself during use or alternatively, constructed in a manner wherein thehollow tube 60 does not collapse upon itself during use. - As shown in
FIG. 2 , thefilter 40 includes a first orupstream segment 72 containing an aerosol former 74, a second ordownstream segment 76 containing asorbent material 78, and avalve 70 positioned between the upstream anddownstream segments filter 40 also preferably includes at least one segment of afiltering material 42, and more preferably an upstream and adownstream segment material 42 surrounding thedownstream segment 76 ofsorbent material 78. Herein, the “upstream” and “downstream” relative positions between filteringmaterial 42 and other features are described in relation to the direction of mainstream smoke as it is drawn from thehollow tube 60 of thetobacco rod 20 and through themulti-component filter 40. - The aerosol former 74 is preferably a glycerin, propylene glycol, triacetin, propylene carbonate and triethyl citrate or other suitable material and more preferably propylene glycol. It can be appreciated that the
upstream segment 72 for the aerosol former 74 can be made of fibrous materials such as crimped paper, modified celluloses, felts and foams, cross-linked polyacrylamide, hydrogels, or suitable material. Additionally, theupstream segment 72 containing the aerosol former 74 can be treated with hydrophobic substances such as waxes and paraffin to reduce loss of aerosol former 74 by evaporation during extended storage. - As described herein, the delivery profile of the
smoking article 10 including the amount of tar per puff will generally be determined by thelength 64 and theinternal diameter 66 of thehollow tube 60, as well as its position within thetobacco rod 20. In addition, the amount of tar per puff is also determined by the amount of aerosol former 74 incorporated into the smoke when heat is transferred to theupstream segment 72 containing aerosol former 74. The amount of aerosol former 74 transferred to the smoke will typically depend on the amount of energy transported to theupstream segment 72 and the nature of the aerosol former 74. In addition, the amount of energy transferred can also be dependent on the geometry of thehollow tube 60, including thelength 64 andinternal diameter 66, and position of thehollow tube 60 within thetobacco rod 20, as well as the puff duration and volume. - The
valve 70 includes a first position, wherein thevalve 70 is closed and prevents a passage of smoke or other components through thevalve 70, and a second position, wherein the valve is open and allows the passage of smoke through thefilter 40. Thevalve 70 can be a one-way valve designed to open when a small amount of suction is applied and which remains open as long as a minimum operational pressure (or draw rate) is maintained. Alternatively, thevalve 70 can be a check valve or other suitable valve arrangement having a pre-determined range of operational pressures, wherein the valve opens at a minimum operational pressure and closes if the applied (draw rate) is higher than a maximum or upper operational pressure. - In a conventional cigarette, a smoker can take puffs of any desired volume or duration, which exposes him or herself to variable amounts of tobacco smoke. This phenomenon is often described as compensation or elasticity; i.e., the smoker's ability to draw an uncontrolled amount of tobacco smoke depending on puff volume, duration and frequency. However, the presence of the
valve 70 can minimize compensation or elasticity by regulating the maximum amount of tobacco smoke that the smoker is exposed per puff by introducing an upper limit to puff volume. Accordingly, thevalve 70 can include a lower (or minimum operation pressure) and an upper (or maximum operation pressure) limitation of operation, which limits the maximum puff volume. Alternatively, if the smoker draws on the cigarette or smokingarticle 10 at a flow or draw rate greater than the upper limitation of operation, thevalve 70 can limit the maximum smoke volume per puff, by displacing the excess flow of smoke towards a secondary path (not shown) and providing smoke free air via a plurality of ventilation holes and/orperforations 52. - In addition, the
valve 70 can be a physical or mechanical barrier, which isolates thetobacco rod 20 and/or aerosol former 74 from thesegments material 42 within thefilter 40. In addition, sincemany aerosol formers 74 are volatile enough to evaporate during prolonged storage, thevalve 70 can prevent the migration of the aerosol former 74 to other cigarette filter components, especially to thesorbent material 78. Thevalve 70 can also increase the shelf life of thesmoking article 10 by isolating thevolatile aerosol formers 74 and/or flavorants (not shown) from thefiltering material 42. It can be appreciated that generally thevalve 70 will be closed and acting a physical or mechanical barrier, when the cigarette orsmoking article 10 is not lit, or when the draw rate or operational pressure is minimal, for example, when thesmoking article 10 is not being puffed. - The
valve 70 can also be used as an internal component of an electrically heated smoking system and/or a capillary aerosol application to regulate TPM delivery and puff volumes, including regulating the amount of nicotine per puff. Examples of an electrically heated smoking system are shown in commonly assigned U.S. Pat. Nos. 5,388,594 and 5,692,525, which are incorporated herein by reference. Alternatively, thevalve 70 can be placed in cigarette holders to be used in conjunction with conventional cigarettes, wherein thevalve 70 limits the maximum puff volume with the advantage of being used for the like of cigarette holders leading to a lower cost cigarette orsmoking article 10. - The
downstream segment 76 preferably includes asorbent material 78 in the form of an activated carbon filter. As shown inFIG. 2 , thesorbent material 78 is positioned between a pair ofsegments 80, 82 (i.e., an upstream and downstream segment) offiltering material 42. Thefiltering material 42 is preferably a cellulose acetate tow filter; however, other suitable filtering materials can be used. - The
sorbent material 78 can be in the form of granules, carbon-on-tow (i.e., cellulose acetate with an activated carbon mixed throughout) and the like. In one embodiment, thesorbent material 78 is a high surface area, activated carbon, for example, a coconut shell based carbon of typical ASTM mesh size used in the cigarette industry or finer. Alternatively, thesorbent material 78 can be a bed of activated carbon, which is adapted to adsorb constituents of mainstream smoke, particularly, those of the gas phase including aldehydes, ketones and other volatile organic compounds, and in particular 1, 3 butadiene, acrolein, isoprene, propionaldehyde, acrylonitrile, benzene, toluene, styrene, acetaldehyde, and hydrogen cyanide. With respect to the carbon particles, it is preferred that they have a mesh size of from 10 to 70, and more preferably a mesh size of 20 to 50. It can be appreciated that anysuitable sorbent material 78 can be used. - Upon lighting of the
smoking article 10, the mainstream smoke is generated by and drawn from thetobacco rod 20 and through thefilter 40. The heat from thetobacco rod 20 is convectively transferred with the smoke from the litend 12 of thetobacco rod 20 ofsmoking material 21 through thehollow tube 60 to the tippedend 14 of thetobacco rod 20 ofsmoking material 21 in each puff. It can be appreciated that the smoke from asmoking article 10 having ahollow tube 60 can travel down thehollow tube 60 at temperatures as high as 250 degrees C., even at considerable distances from the litend 12. Accordingly, theupstream segment 72 having an aerosol former 74, wherein the aerosol former 74 is released by exposure to thermal energy contained within thefilter 40. Theupstream segment 72 having an aerosol former 74 acts as a heat sink, which prevents the filtering material 42 (typically cellulose acetate) from melting under the heat delivered by thehollow tube 60. -
FIG. 3 shows a cross sectional view of another embodiment of asmoking article 10 having a plurality of ventilation holes or perforations on a downstream side of thevalve 70. As shown inFIG. 3 , thesmoking article 10 can have a plurality of ventilation holes orperforations 52, each of which extends through the tippingpaper 50 and theplug wrap 44, to provide thesmoking article 10 with filter ventilation. As shown inFIG. 3 , ventilation of mainstream smoke can be achieved with a circumferential row or rows of ventilation holes orperforations 52 about a location along thefilter 40. Thefilter 40 can include a plurality of ventilation holes orperforations 52 on either the downstream (FIG. 3 ) and/or the upstream side (FIG. 4 ) of thevalve 70. The ventilation holes orperforations 52 extend through the tippingpaper 50 and thesegment wrap 44. - In use, as shown in
FIG. 3 , thevalve 70 can be located upstream of theperforations 52. As the flow rate through thevalve 70 increases, it pressure drop increases, thereby forcing more flow through theperforations 52 within thefilter 40. Alternatively, thevalve 70 can include a spring loaded plate or other suitable mechanism (not shown) that moves as the flow rate increases, exposing more perforations, and thereby allowing more flow through theperforations 52. -
FIG. 5 shows a cross sectional view of another embodiment of asmoking article 10 having atobacco rod 20 with a plurality of ventilation holes orperforations 52 on thetobacco rod 20. As shown inFIG. 5 , thesmoking article 10 can have a plurality of ventilation holes orperforations 52, each of which extends through thewrapper 30 of thetobacco rod 20 providing thesmoking article 10 with tobacco rod ventilation. - In accordance with an embodiment, the
valve 70 can be placed inside a tubular segment of a low-density cellulose acetate tow (sometimes referred to as a hollow acetate tube or HAT). It can be appreciated that for ease of manufacturing on high-speed filter rod making equipment, the outer diameter of thevalve 70 is less than that of the original diameter of the tubular segment prior to filter 40 making operations. Preferably, the diameter of thevalve 70 is smaller than the pre-determined diameter of the cigarette to be made. For example, for asmoking article 10 having a circumference of approximately 24.1 mm, the circumference of thevalve 70 is preferably, approximately 23.9 mm or less. As is typically done in established filter making techniques, the original diameter of the hollow acetate tow segment is slightly oversized so that it may be uniformly compressed into the desired diameter (e.g. 24.1 mm circumference) during filter making operations and held by application of segment or plugwrap 44. - It will be understood that the foregoing description is of the preferred embodiments, and is, therefore, merely representative of the article and methods of manufacturing the same. It can be appreciated that many variations and modifications of the different embodiments in light of the above teachings will be readily apparent to those skilled in the art. Accordingly, the exemplary embodiments, as well as alternative embodiments, may be made without departing from the spirit and scope of the articles and methods as set forth in the attached claims.
Claims (20)
1. A smoking article comprising:
a cylinder of smoking material;
a hollow tube within the cylinder of smoking material; and
a filter attached to the cylinder of smoking material, the filter comprising:
an upstream segment containing an aerosol former;
a downstream segment containing a sorbent material; and
a valve positioned between the upstream and the downstream segments, wherein the valve includes a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter.
2. The smoking article of claim 1 , wherein the valve is designed to open at a minimum operational pressure and remains open as long as the minimum operational pressure is maintained; or the valve has a predetermined range of operational pressures, and the valve opens at a minimum operational pressure and closes if the operational pressure is higher than a maximum operational pressure.
3. The smoking article of claim 1 , wherein the sorbent material is an activated carbon material.
4. The smoking article of claim 1 , wherein the upstream and the downstream segments are cellulose acetate tow.
5. The smoking article of claim 2 , wherein the sorbent material comprises an activated carbon composition mixed with cellulose acetate fibers.
6. The smoking article of claim 1 , wherein the aerosol former is selected from a group comprising glycerin, propylene, glycol, triacetin, propylene carbonate and triethyl citrate.
7. The smoking article of claim 1 , wherein the upstream segment is a fibrous material; and the downstream segment of sorbent material is between a pair of segments of cellulose acetate tow.
8. The smoking article of claim 7 , wherein the fibrous material is selected from a group comprising crimped paper, modified celluloses, carbon felts and foams, or encapsulated aerosol formers.
9. The smoking article of claim 1 , further comprising a plurality of ventilation holes within the filter on a downstream side of the valve.
10. The smoking article of claim 1 , further comprising a plurality of ventilation holes within the filter on an upstream side of the valve.
11. A smoking article comprising:
a cylinder of smoking material;
a hollow tube within the cylinder of smoking material; and
a filter attached to the cylinder of smoking material, the filter having a segment containing an aerosol former, a valve having a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter, and at least one segment of filtering material.
12. The smoking article of claim 11 , wherein the valve is designed to open at a minimum operational pressure and remains open as long as the minimum operational pressure is maintained.
13. The smoking article of claim 11 , wherein the valve has a pre-determined range of operational pressures, and the valve opens at a minimum operational pressure and closes if the operational pressure is higher than a maximum operational pressure.
14. The smoking article of claim 11 , further comprising a plurality of ventilation holes within the filter on a downstream side of the valve; or a plurality of ventilation holes within the filter on an upstream side of the valve
15. A filter for a smoking article comprising:
an upstream segment containing an aerosol former;
a downstream segment containing a sorbent material; and
a valve positioned between the upstream segment and the downstream segments, wherein the valve includes a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter.
16. The filter of claim 15 , wherein the valve is designed to open at a minimum operational pressure and remains open as long as the minimum operational pressure is maintained.
17. The filter of claim 15 , wherein the valve has a pre-determined range of operational pressures, and the valve opens at a minimum operational pressure and closes if the operational pressure is higher than a maximum operational pressure.
18. The filter of claim 15 , wherein the smoking article is an electrically heated smoking system.
19. The filter of claim 15 , wherein the smoking article comprises a cigarette holder and a cigarette.
20. A method of making a smoking article, comprising:
forming a tobacco rod portion of the smoking article by placing smoking material between a hollow tube and an outer layer of wrapper paper;
forming a filter portion of the smoking article having a plurality of segments comprising an upstream segment containing an aerosol former, a valve having a first position in which the valve is closed, and a second position in which the valve is open and allows the passage of smoke through the filter, and at least one filtering material segment; and
joining said tobacco rod portion in end-to-end relationship with the filter portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/073,542 US20090014020A1 (en) | 2007-03-09 | 2008-03-06 | Smoking article with valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US90611707P | 2007-03-09 | 2007-03-09 | |
US12/073,542 US20090014020A1 (en) | 2007-03-09 | 2008-03-06 | Smoking article with valve |
Publications (1)
Publication Number | Publication Date |
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US20090014020A1 true US20090014020A1 (en) | 2009-01-15 |
Family
ID=39760168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/073,542 Abandoned US20090014020A1 (en) | 2007-03-09 | 2008-03-06 | Smoking article with valve |
Country Status (2)
Country | Link |
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US (1) | US20090014020A1 (en) |
WO (1) | WO2008110935A2 (en) |
Cited By (8)
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US20080196102A1 (en) * | 2006-10-06 | 2008-08-14 | Sourcefire, Inc. | Device, system and method for use of micro-policies in intrusion detection/prevention |
US20080230080A1 (en) * | 2006-12-28 | 2008-09-25 | Philip Morris Usa Inc. | Various embodiments for producing a tobacco rod with a hollow passageway extending therethrough |
US20090293894A1 (en) * | 2008-06-02 | 2009-12-03 | Philip Morris Usa Inc. | Smoking article with transparent section |
CN104460695A (en) * | 2014-10-29 | 2015-03-25 | 上海烟草集团有限责任公司 | Glyceride spraying device and control method thereof |
US10034988B2 (en) | 2012-11-28 | 2018-07-31 | Fontem Holdings I B.V. | Methods and devices for compound delivery |
US20180368468A1 (en) * | 2017-06-23 | 2018-12-27 | Altria Client Services Llc | Reduced harm smoking article |
US10194693B2 (en) | 2013-09-20 | 2019-02-05 | Fontem Holdings 1 B.V. | Aerosol generating device |
US20190075838A1 (en) * | 2017-09-14 | 2019-03-14 | Altria Client Services Llc | Smoking Article With Reduced Tobacco |
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US8424540B2 (en) * | 2009-10-09 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with valved restrictor |
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US20080196102A1 (en) * | 2006-10-06 | 2008-08-14 | Sourcefire, Inc. | Device, system and method for use of micro-policies in intrusion detection/prevention |
US20080230080A1 (en) * | 2006-12-28 | 2008-09-25 | Philip Morris Usa Inc. | Various embodiments for producing a tobacco rod with a hollow passageway extending therethrough |
US7827994B2 (en) * | 2006-12-28 | 2010-11-09 | Philip Morris Usa Inc. | Method for producing a tobacco rod with a hollow passageway extending therethrough |
US20090293894A1 (en) * | 2008-06-02 | 2009-12-03 | Philip Morris Usa Inc. | Smoking article with transparent section |
US8393334B2 (en) * | 2008-06-02 | 2013-03-12 | Philip Morris Usa Inc. | Smoking article with transparent section |
US10034988B2 (en) | 2012-11-28 | 2018-07-31 | Fontem Holdings I B.V. | Methods and devices for compound delivery |
US10194693B2 (en) | 2013-09-20 | 2019-02-05 | Fontem Holdings 1 B.V. | Aerosol generating device |
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US20180368468A1 (en) * | 2017-06-23 | 2018-12-27 | Altria Client Services Llc | Reduced harm smoking article |
US11490653B2 (en) * | 2017-06-23 | 2022-11-08 | Altria Client Services Llc | Smoking article |
US20190075838A1 (en) * | 2017-09-14 | 2019-03-14 | Altria Client Services Llc | Smoking Article With Reduced Tobacco |
US10765143B2 (en) * | 2017-09-14 | 2020-09-08 | Altria Client Services Llc | Smoking article with reduced tobacco |
US11375742B2 (en) | 2017-09-14 | 2022-07-05 | Altria Client Services Llc | Smoking article with reduced tobacco |
Also Published As
Publication number | Publication date |
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WO2008110935A2 (en) | 2008-09-18 |
WO2008110935A3 (en) | 2008-12-18 |
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