DE3272694D1 - Filter of poly(tetrafluoroethylene) - Google Patents
Filter of poly(tetrafluoroethylene)Info
- Publication number
- DE3272694D1 DE3272694D1 DE8282302554T DE3272694T DE3272694D1 DE 3272694 D1 DE3272694 D1 DE 3272694D1 DE 8282302554 T DE8282302554 T DE 8282302554T DE 3272694 T DE3272694 T DE 3272694T DE 3272694 D1 DE3272694 D1 DE 3272694D1
- Authority
- DE
- Germany
- Prior art keywords
- tetrafluoroethylene
- poly
- filter
- 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.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
- D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
- B01D39/2017—Glass or glassy material the material being filamentary or fibrous
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4318—Fluorine series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43838—Ultrafine fibres, e.g. microfibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/05—Methods of making filter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2904—Staple length fiber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
- Y10T442/102—Woven scrim
- Y10T442/159—Including a nonwoven fabric which is not a scrim
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
- Y10T442/102—Woven scrim
- Y10T442/159—Including a nonwoven fabric which is not a scrim
- Y10T442/16—Two or more nonwoven layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/682—Needled nonwoven fabric
- Y10T442/684—Containing at least two chemically different strand or fiber materials
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/265,444 US4361619A (en) | 1981-05-20 | 1981-05-20 | Filter of poly(tetrafluoroethylene) and glass fibers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3272694D1 true DE3272694D1 (en) | 1986-09-25 |
Family
ID=23010475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8282302554T Expired DE3272694D1 (en) | 1981-05-20 | 1982-05-19 | Filter of poly(tetrafluoroethylene) |
Country Status (6)
Country | Link |
---|---|
US (1) | US4361619A (de) |
EP (1) | EP0066414B1 (de) |
JP (3) | JPS57205566A (de) |
KR (1) | KR880000384B1 (de) |
CA (1) | CA1166169A (de) |
DE (1) | DE3272694D1 (de) |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2148706B (en) * | 1983-11-04 | 1986-10-01 | Fogarty Plc | Improvements in and relating to fillings for articles and filled articles |
DE3413213A1 (de) * | 1984-04-07 | 1985-10-24 | Herding GmbH Entstaubungsanlagen, 8450 Amberg | Filterelement zum abscheiden von feststoffteilchen aus gasfoermigen oder fluessigen medien |
US4612237A (en) * | 1985-12-13 | 1986-09-16 | E. I. Du Pont De Nemours And Company | Hydraulically entangled PTFE/glass filter felt |
US4816328A (en) * | 1987-11-13 | 1989-03-28 | W. L. Gore & Associates, Inc. | Breathable, non-linting laminate |
US4861353A (en) * | 1987-12-07 | 1989-08-29 | E. I. Du Pont De Nemours And Company | Filter element and assembly |
US4840838A (en) * | 1988-09-08 | 1989-06-20 | E. I. Du Pont De Nemours And Company | High temperature filter felt |
US5028465A (en) * | 1989-03-20 | 1991-07-02 | James River Corporation | Hydroentangled composite filter element |
US4983434A (en) * | 1989-04-07 | 1991-01-08 | W. L. Gore & Associates, Inc. | Filter laminates |
JPH0417809U (de) * | 1990-06-06 | 1992-02-14 | ||
JPH05214A (ja) * | 1990-11-30 | 1993-01-08 | Mitsui Petrochem Ind Ltd | エレクトレツトフイルター |
JP2594844B2 (ja) * | 1991-03-05 | 1997-03-26 | 日本フエルト工業株式会社 | 耐熱性ニードルフェルトフィルター材 |
US5171339A (en) * | 1991-11-07 | 1992-12-15 | E. I. Du Pont De Nemours And Company | Filter bag for hot gases |
JP2594723B2 (ja) * | 1991-11-08 | 1997-03-26 | ユニチカグラスファイバー株式会社 | バグフィルター用フェルト |
US5229200A (en) * | 1991-12-18 | 1993-07-20 | W. L. Gore & Associates, Inc. | Static dissipative nonwoven textile material |
US5468529A (en) * | 1992-08-28 | 1995-11-21 | Korea Institute Of Science And Technology | Magnetic filter material comprising a self-bonding nonwoven fabric of continuous thermoplastic fibers and magnetic particulate within the fibers |
US5300084A (en) * | 1992-11-23 | 1994-04-05 | United States Surgical Corporation | Pneumoperitoneum needle |
CA2155325C (en) * | 1993-03-16 | 1999-07-13 | Robert L. Sassa | Composite fiber of commingled fiberglass and polytetrafluoroethylene and method of producing same |
WO1994023098A1 (en) * | 1993-04-05 | 1994-10-13 | Daikin Industries, Ltd. | Polytetrafluoroethylene fiber, cottony material containing the same, and process for producing the same |
US5527569A (en) * | 1994-08-22 | 1996-06-18 | W. L. Gore & Associates, Inc. | Conductive filter laminate |
EP0785302B1 (de) * | 1994-10-04 | 2003-03-26 | Daikin Industries, Ltd. | Gemischtes, baumwollähnliches material, daraus hergestellter vliesstoff und verfahren zur herstellung |
US5422159A (en) * | 1994-12-08 | 1995-06-06 | Ausimont U.S.A., Inc. | Fluorpolymer sheets formed from hydroentangled fibers |
FR2761901B1 (fr) * | 1997-04-10 | 1999-05-14 | Valeo | Procede de realisation d'un dispositif de filtration et dispositif de filtration en particulier pour l'aeration et/ou la climatisation de locaux ou de vehicules |
US6010785A (en) * | 1998-02-25 | 2000-01-04 | E. I. Du Pont De Nemours And Company | Cardable blends of dual glass fibers |
WO1999064135A1 (fr) * | 1998-06-08 | 1999-12-16 | Daikin Industries, Ltd. | Materiau filtrant pour collecteur de poussiere de four a temperature elevee |
US6537614B1 (en) | 1998-12-18 | 2003-03-25 | Kimberly-Clark Worldwide, Inc. | Cationically charged coating on hydrophobic polymer fibers with poly (vinyl alcohol) assist |
US6274041B1 (en) | 1998-12-18 | 2001-08-14 | Kimberly-Clark Worldwide, Inc. | Integrated filter combining physical adsorption and electrokinetic adsorption |
US6645388B2 (en) | 1999-12-22 | 2003-11-11 | Kimberly-Clark Corporation | Leukocyte depletion filter media, filter produced therefrom, method of making same and method of using same |
US20050106970A1 (en) * | 2000-09-01 | 2005-05-19 | Stanitis Gary E. | Melt processable perfluoropolymer forms |
JP4746202B2 (ja) * | 2001-04-19 | 2011-08-10 | 日本バイリーン株式会社 | 耐炎フィルター材 |
US7015159B2 (en) * | 2001-07-24 | 2006-03-21 | E. I. Du Pont De Nemours And Company | Nonwoven material for low friction bearing surfaces |
US20030192294A1 (en) * | 2002-04-16 | 2003-10-16 | Alan Smithies | Filter medium |
US20040117958A1 (en) * | 2002-12-19 | 2004-06-24 | Abraham Turkson | High temperature needle-felts with woven basalt scrims |
CN100386132C (zh) * | 2003-06-12 | 2008-05-07 | 富士工株式会社 | 用于袋式过滤器的毛毡材料 |
JP4885134B2 (ja) * | 2004-08-05 | 2012-02-29 | エイカーズ バイオサイエンスィズ インコーポレイテッド | 血液分離装置、及び全血からの液体成分画分の分離方法 |
EP1974784A4 (de) * | 2005-12-09 | 2009-11-25 | Sumitomo Chemical Co | Öl/wasser-trennfilter und öl/wasser-trennvorrichtung |
US20080166938A1 (en) * | 2007-01-09 | 2008-07-10 | Teadit Industria E Comercio Ltda. | Microfiber split film filter felt and method of making same |
FR2943257B1 (fr) * | 2009-03-19 | 2011-04-15 | Ferlam Technologies | Bourrelet coupe-feu |
KR102327955B1 (ko) * | 2011-09-30 | 2021-11-17 | 오웬스 코닝 인텔렉츄얼 캐피탈 엘엘씨 | 섬유질 재료들로부터 웹을 형성하는 방법 |
DE102012025023A1 (de) * | 2012-12-20 | 2014-06-26 | Johns Manville Europe Gmbh | Filtermedium |
WO2015037245A1 (ja) * | 2013-09-12 | 2015-03-19 | 日東電工株式会社 | 充填材含有フッ素樹脂シートの製造方法 |
CN103785224B (zh) * | 2014-02-14 | 2015-09-30 | 营口市洪源玻纤科技有限公司 | 玻纤和ptfe纤维混纺滤料及其制备方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL189176B (nl) * | 1956-07-13 | 1900-01-01 | Hisamitsu Pharmaceutical Co | Pleister op basis van een synthetische rubber. |
US2933154A (en) * | 1957-07-31 | 1960-04-19 | Du Pont | Process for filtering with polytetrafluoroethylene fibers |
US3018845A (en) * | 1957-12-12 | 1962-01-30 | Milton A Powers | Filters |
US3059311A (en) * | 1958-12-16 | 1962-10-23 | Du Pont | Stable non-woven batt of polytetrafluoroethylene fibers |
US3197946A (en) * | 1960-11-25 | 1965-08-03 | United Aircraft Corp | Coalescer for a moisture separator |
US3506133A (en) * | 1965-02-08 | 1970-04-14 | Appleton Wire Works Corp | Sewn fabric filter medium and method of manufacture |
US3338777A (en) * | 1966-05-11 | 1967-08-29 | Pittsburgh Plate Glass Co | Fiber glass mat and method of making same |
BE786742A (fr) * | 1971-07-29 | 1973-01-26 | Johns Manville | Tampon filtrant et procede de filtrage |
US3986851A (en) * | 1975-06-23 | 1976-10-19 | The Harshaw Chemical Company | Filter of polytetrafluoroethylene fibers |
JPS5238680A (en) * | 1975-08-26 | 1977-03-25 | Nippon Denso Co Ltd | Filter member for air filters |
US4210540A (en) * | 1977-06-03 | 1980-07-01 | Whatman Reeve Angel Limited | Improved filter tube |
-
1981
- 1981-05-20 US US06/265,444 patent/US4361619A/en not_active Expired - Lifetime
-
1982
- 1982-05-17 JP JP57081742A patent/JPS57205566A/ja active Granted
- 1982-05-18 CA CA000403226A patent/CA1166169A/en not_active Expired
- 1982-05-19 DE DE8282302554T patent/DE3272694D1/de not_active Expired
- 1982-05-19 KR KR8202176A patent/KR880000384B1/ko active
- 1982-05-19 EP EP82302554A patent/EP0066414B1/de not_active Expired
-
1985
- 1985-11-09 JP JP60249975A patent/JPS61160466A/ja active Granted
-
1989
- 1989-11-28 JP JP1306754A patent/JPH02191755A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0066414A2 (de) | 1982-12-08 |
JPH0214456B2 (de) | 1990-04-09 |
EP0066414A3 (en) | 1983-11-23 |
JPS57205566A (en) | 1982-12-16 |
JPH0236704B2 (de) | 1990-08-20 |
US4361619A (en) | 1982-11-30 |
JPH02191755A (ja) | 1990-07-27 |
KR830010233A (ko) | 1983-12-26 |
KR880000384B1 (ko) | 1988-03-20 |
CA1166169A (en) | 1984-04-24 |
EP0066414B1 (de) | 1986-08-20 |
JPS61160466A (ja) | 1986-07-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |