CA1314527C - Electroluminescent dome light for a convertible automobile - Google Patents
Electroluminescent dome light for a convertible automobileInfo
- Publication number
- CA1314527C CA1314527C CA000592991A CA592991A CA1314527C CA 1314527 C CA1314527 C CA 1314527C CA 000592991 A CA000592991 A CA 000592991A CA 592991 A CA592991 A CA 592991A CA 1314527 C CA1314527 C CA 1314527C
- Authority
- CA
- Canada
- Prior art keywords
- coating
- light
- housing
- electroluminescent
- electrically conductive
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
- B60Q3/40—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors specially adapted for specific vehicle types
- B60Q3/49—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors specially adapted for specific vehicle types for vehicles with non-fixed roofs, e.g. convertibles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
- B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
- B60Q3/74—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps
- B60Q3/745—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps using lighting panels or mats, e.g. electro-luminescent panels, LED mats
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
Abstract
ABSTRACT OF THE DISCLOSURE
The invention is an electroluminescent dome light for a convertible vehicle. The lighting element consists of a thin piece of electrically conductive material, which is specially treated with an electroluminescent coating. The element is enclosed in a phosphorous treated laminate which provides structure and diffuses the light emitted, giving it qualities of incandescent light. Two electrical connectors attach to the element to provide a means for generating an electrical current though the conductive material. The lighting element is held in place on the headliner of the convertible by a housing, with a means of attachment.
The invention is an electroluminescent dome light for a convertible vehicle. The lighting element consists of a thin piece of electrically conductive material, which is specially treated with an electroluminescent coating. The element is enclosed in a phosphorous treated laminate which provides structure and diffuses the light emitted, giving it qualities of incandescent light. Two electrical connectors attach to the element to provide a means for generating an electrical current though the conductive material. The lighting element is held in place on the headliner of the convertible by a housing, with a means of attachment.
Description
1314~27 ELECTROLUMINESCENT DOME LIGHT FOR
A CONVERTIBLE AUTOMOBILE
The present invention concerns an electroluminescent dome light for use in a convertible top vehicle.
As is known to those skilled in the art to which ~he present invention pertains, lighting in convertible-type automobiles has been limited to lamps, or bulbs disposed in pillars or under the dashboard. Such lighting is inadequate for reading or locating objects in a dark automobile. In the past there has been no dome light available for convertible-type automobiles to provide, brighter, and better placed lighting, because of the inflexibility and bulk associated with such conventional light.
Thus, it is to be appreciated that there exists a need for better interior lighting within such vehicles and it is to this the present invention is directed.
According to one aspect of the present invention there is provided an electroluminescent dome light for a con~ertible-type vehicle comprising:
a) a lighting element, comprising:
1) an electrically conductive material having first and second opposed surfaces and having an electroluminescent coating on one surface thereof, and an uncoated border around the periphery thereof;
A CONVERTIBLE AUTOMOBILE
The present invention concerns an electroluminescent dome light for use in a convertible top vehicle.
As is known to those skilled in the art to which ~he present invention pertains, lighting in convertible-type automobiles has been limited to lamps, or bulbs disposed in pillars or under the dashboard. Such lighting is inadequate for reading or locating objects in a dark automobile. In the past there has been no dome light available for convertible-type automobiles to provide, brighter, and better placed lighting, because of the inflexibility and bulk associated with such conventional light.
Thus, it is to be appreciated that there exists a need for better interior lighting within such vehicles and it is to this the present invention is directed.
According to one aspect of the present invention there is provided an electroluminescent dome light for a con~ertible-type vehicle comprising:
a) a lighting element, comprising:
1) an electrically conductive material having first and second opposed surfaces and having an electroluminescent coating on one surface thereof, and an uncoated border around the periphery thereof;
2) an electrically conductive coating disposed about the periphery of the electroluminescent coating;
13~ ~527 3) an insulating material disposed about the periphery of the electrically conductive coating; but not in contact therewith;
13~ ~527 3) an insulating material disposed about the periphery of the electrically conductive coating; but not in contact therewith;
4) a laminate having a phosphorous coating encapsulating the electrically conductive material, the laminate being in contact with the electroluminescent coating;
b) a means for generating an electric current through the conductive material and being in electrical communication with a source of power; and c) a housing for the lighting element, the housing including means for attachment to a convertible top.
The electroluminescent dome light of the present invention is flexible enough to be used for a converti~le top vehicle and thin enough to fit within the reduced head space resulting with a convertible top vehicle.
According to another aspect of the invention there is provided an electroluminescent light for the interior lighting of a vehicle comprising (a) a lighting element comprising: (1) an electrically conductive material having an electroluminescent coating on one side of the material; (2) an electrically conductive coating disposed about the periphery of said electroluminescent coating; (3~ an insulating material disposed about the periphery of said electrically conductive coating; and (4) a light diffusing coating comprising a phosphorus-treated laminate encapsulat.ing said electrically conductive material, the light diffusing coating having contact with said electroluminescent coating: (~) means for generating an electric current through said conductive material; and (c) a housing for the lighting element, said housing including a 131~27 means for attachment of said housing to the interior of the vehicle.
Reference is now made to the accompanying drawings, in which:
Figure 1 is a perspective view of the lighting element hereof;
Figure 2 is an exploded, perspective view of the laminate with a light diffus.ing coating;
Figure 3 is a frontal view of the lighting element hereof with attached electrical connectors; and Figure 4 is a perspective view of the housing for the lighting element.
Now, and with reference to the drawing and, in particular, to Figure 1, the present invention includes a i ~ - 2a -` ~ ~ 31452~
lighting element 10. The li~hting element, genernlly, comprises a thin strip of electrically conductive material 11 ~uch a~
aluminum. An electrolumine3cent coating 12 such as Indium Tin Oxide, (InSnO), is depo~ited on one side or surface of the strip. The opposite or other ~ide or surface i8 uncoated. The uncoated side defines an anode 14.
Disposed about the periphery of the electrolu~ine~cent coatingt iB a bord~r of electrically conductive meterial 15, such as, copper or silver. This electrically conductive material forms a cathode 16.
A thin border on the cathode surface i8 uncoated around the outer periphery of the electrically conductive naterial. An insulsting material 18 such a~ ~ylnr, i~ spplied to thi~ thin border.
As shown in Figure 2, the electroluminescent element i8 encased in a laminating matcrial or la~inste 20. The lnminate has a phosphorous costing 2Z deposited on the interior ~urface thereof. The laminate with the phosphorous or similar type coating 24, is in contact with the electrolu~ine~cent coating.
The phosphorous coating acts as a len~ to diffuse and inten~ify the light given off fro~ the electrolumine~cent coating, and give~ the light the quality o~ incandescent lighting.
As shown iD Figure 3, attached to the electroluminescent element are two electrical connectors 26, 28, mede of copper or other electrically conductive material. The connectora provide a mesn3 of generating electrical current through the conductive material. The connectors are attached to opposite sides of the element with a space between the connectors. One connector 28 i~ attached to the cathode 16 on the electrolumine~cent coating, the other connector 26 i~
attached to the anode 14 on the uncoated side of the element.
The insulating border 18 prevents a ~hort circuit by preventing both connectors from touching the anode or cathode.
` ; 131~527 The connectors attach to a power uource (not shown) of the vehicle through wire~ (not ~hown) which run from the electroluminescent element connector through the linkages of the top stack of the convertible vehicle, to th~ power source. An inverter (not shown), between the power source and the light source convert~ the direct current to alternating current at a special operating frequency.
The dome light operate~ when the vehicle door is opened, or the inside ~witch is turned to the "on" position.
The switch creates a closed circuit which allows electrical current to flow through the wires to the lighting element. The electrical current passes through the connecting wire~ to the cathode located on the electroluminescent element. Her~ the current excited the electrons. The ~lectrons in the excited state reach a threshold voltage that allows them to pa~s through the barrier of the electrolumine~cent ~aterial. At this voltage the electroluminescent ~aterial emits energy in the form of photons or light energy. The light emitted from the electroluminescent material i~ diffu3ed through the pbosphorous 2~ treated laminate. The laminate act~ a~ a lens or filter, and giv`es the light an incande~cent quality.
A~ noted her~inabove the electroluminesc~nt element is held securely in place on the headliner of the vehicle by a housing ~hown in Figure 4. The housing 30 comprise~ a back wall 25 32 and two side walls 34, 36 and a lip 38, or opening to receive the element. The housing may be constructed of a thin flexible plastic. The housing i8 ~ecured to the headliner fabric by ct lenst one tab or pin 40, which ~ay be hard pla~tic or metal.
The tab or pin ha6 an outwardly pointe~ terminua that projects fro~ the housing. The tab pierces the headliner fabric, and can be bent to ~ecure the housing in place.
This electroluminescent dome light being thin in nature provides the requi~ite thinness, necessary to fit a dome light into the reduced head ~pace of th~ convertible.
1 3 1 4 ~ 7 Further, the thin laminating material provideA the flexibility necessary for a domo light in the convertible top.
The filament may be any shspe or size and the housing which provide3 a mean3 of 3ecuring the lighting element to ths headliner of the convertible iB thin and flexible as well. The element i8 attached by electrical connector~ to connecting wire~
which run along the top stack of the convertible and sre folded into the top stack when tlle top i8 down.
~ he electroluminescent dome light provides 8 convenient source of illumination ~aking it possible to read in tha automobile or locate items which cannot be ~ound in tha dark vehicle The electroluminescent dome light affords the vehicie occupant addition~l convenience and ssfety.
~ecause of its thinne~s and flexibility the electrolumine~cent light i8 versatile and can be used in many plsces where sp~ce con~traints would prevent use of incande~cent or other lightin~ fixturec.
Having de~cribed the invention, what ic claimed is:
b) a means for generating an electric current through the conductive material and being in electrical communication with a source of power; and c) a housing for the lighting element, the housing including means for attachment to a convertible top.
The electroluminescent dome light of the present invention is flexible enough to be used for a converti~le top vehicle and thin enough to fit within the reduced head space resulting with a convertible top vehicle.
According to another aspect of the invention there is provided an electroluminescent light for the interior lighting of a vehicle comprising (a) a lighting element comprising: (1) an electrically conductive material having an electroluminescent coating on one side of the material; (2) an electrically conductive coating disposed about the periphery of said electroluminescent coating; (3~ an insulating material disposed about the periphery of said electrically conductive coating; and (4) a light diffusing coating comprising a phosphorus-treated laminate encapsulat.ing said electrically conductive material, the light diffusing coating having contact with said electroluminescent coating: (~) means for generating an electric current through said conductive material; and (c) a housing for the lighting element, said housing including a 131~27 means for attachment of said housing to the interior of the vehicle.
Reference is now made to the accompanying drawings, in which:
Figure 1 is a perspective view of the lighting element hereof;
Figure 2 is an exploded, perspective view of the laminate with a light diffus.ing coating;
Figure 3 is a frontal view of the lighting element hereof with attached electrical connectors; and Figure 4 is a perspective view of the housing for the lighting element.
Now, and with reference to the drawing and, in particular, to Figure 1, the present invention includes a i ~ - 2a -` ~ ~ 31452~
lighting element 10. The li~hting element, genernlly, comprises a thin strip of electrically conductive material 11 ~uch a~
aluminum. An electrolumine3cent coating 12 such as Indium Tin Oxide, (InSnO), is depo~ited on one side or surface of the strip. The opposite or other ~ide or surface i8 uncoated. The uncoated side defines an anode 14.
Disposed about the periphery of the electrolu~ine~cent coatingt iB a bord~r of electrically conductive meterial 15, such as, copper or silver. This electrically conductive material forms a cathode 16.
A thin border on the cathode surface i8 uncoated around the outer periphery of the electrically conductive naterial. An insulsting material 18 such a~ ~ylnr, i~ spplied to thi~ thin border.
As shown in Figure 2, the electroluminescent element i8 encased in a laminating matcrial or la~inste 20. The lnminate has a phosphorous costing 2Z deposited on the interior ~urface thereof. The laminate with the phosphorous or similar type coating 24, is in contact with the electrolu~ine~cent coating.
The phosphorous coating acts as a len~ to diffuse and inten~ify the light given off fro~ the electrolumine~cent coating, and give~ the light the quality o~ incandescent lighting.
As shown iD Figure 3, attached to the electroluminescent element are two electrical connectors 26, 28, mede of copper or other electrically conductive material. The connectora provide a mesn3 of generating electrical current through the conductive material. The connectors are attached to opposite sides of the element with a space between the connectors. One connector 28 i~ attached to the cathode 16 on the electrolumine~cent coating, the other connector 26 i~
attached to the anode 14 on the uncoated side of the element.
The insulating border 18 prevents a ~hort circuit by preventing both connectors from touching the anode or cathode.
` ; 131~527 The connectors attach to a power uource (not shown) of the vehicle through wire~ (not ~hown) which run from the electroluminescent element connector through the linkages of the top stack of the convertible vehicle, to th~ power source. An inverter (not shown), between the power source and the light source convert~ the direct current to alternating current at a special operating frequency.
The dome light operate~ when the vehicle door is opened, or the inside ~witch is turned to the "on" position.
The switch creates a closed circuit which allows electrical current to flow through the wires to the lighting element. The electrical current passes through the connecting wire~ to the cathode located on the electroluminescent element. Her~ the current excited the electrons. The ~lectrons in the excited state reach a threshold voltage that allows them to pa~s through the barrier of the electrolumine~cent ~aterial. At this voltage the electroluminescent ~aterial emits energy in the form of photons or light energy. The light emitted from the electroluminescent material i~ diffu3ed through the pbosphorous 2~ treated laminate. The laminate act~ a~ a lens or filter, and giv`es the light an incande~cent quality.
A~ noted her~inabove the electroluminesc~nt element is held securely in place on the headliner of the vehicle by a housing ~hown in Figure 4. The housing 30 comprise~ a back wall 25 32 and two side walls 34, 36 and a lip 38, or opening to receive the element. The housing may be constructed of a thin flexible plastic. The housing i8 ~ecured to the headliner fabric by ct lenst one tab or pin 40, which ~ay be hard pla~tic or metal.
The tab or pin ha6 an outwardly pointe~ terminua that projects fro~ the housing. The tab pierces the headliner fabric, and can be bent to ~ecure the housing in place.
This electroluminescent dome light being thin in nature provides the requi~ite thinness, necessary to fit a dome light into the reduced head ~pace of th~ convertible.
1 3 1 4 ~ 7 Further, the thin laminating material provideA the flexibility necessary for a domo light in the convertible top.
The filament may be any shspe or size and the housing which provide3 a mean3 of 3ecuring the lighting element to ths headliner of the convertible iB thin and flexible as well. The element i8 attached by electrical connector~ to connecting wire~
which run along the top stack of the convertible and sre folded into the top stack when tlle top i8 down.
~ he electroluminescent dome light provides 8 convenient source of illumination ~aking it possible to read in tha automobile or locate items which cannot be ~ound in tha dark vehicle The electroluminescent dome light affords the vehicie occupant addition~l convenience and ssfety.
~ecause of its thinne~s and flexibility the electrolumine~cent light i8 versatile and can be used in many plsces where sp~ce con~traints would prevent use of incande~cent or other lightin~ fixturec.
Having de~cribed the invention, what ic claimed is:
Claims (14)
1. An electroluminescent dome light for a convertible-type vehicle comprising: a) a lighting element comprising: 1) an electrically conductive material having an electroluminescent coating on one side, of the material; 2) an electrically conductive coating disposed about the periphery of the electroluminescent coating; 3) an insulating material disposed about the periphery of the electrically conductive coating; and 4) a laminate having a light diffusing coating encapsulating the electrically conductive material, the light diffusing coating having contact with the electroluminescent coating; and b) means for generating an electric current through the conductive material; and c) a housing for the lighting element, the housing including a means for attachment to a convertible top.
2. The dome light of Claim 1 wherein: the electrically conductive material is aluminum.
3. The dome light of Claim 1 wherein the laminate material is polyethylene terephthalate.
4. The dome light of Claim 1 further comprising: a phosphorous coating on the laminate which defines a light diffusing coating.
5. The dome light of Claim 1 further comprising a pair of electrical connectors for connecting the lighting element to a power source.
6. The dome light of Claim 1 wherein said housing comprise, a) a back wall and two side walls; b) an opening to receive the lighting element; and c) a pin comprising a flexible metal material having an outwardly pointed terminus that projects from the housing into the convertible top headliner to secure the housing to the headliner of the vehicle.
7. The housing of Claim 6 further comprising: a tab comprising a flexible plastic material, having an outwardly pointed terminus, for securing the housing to the headliner of the vehicle.
8. An electroluminescent light for the interior lighting of a vehicle comprising (a) a lighting element comprising: (1) an electrically conductive material having an electroluminescent coating on one side of the material; (2) an electrically conductive coating disposed about the periphery of said electroluminescent coating; (3) an insulating material disposed about the periphery of said electrically conductive coating; and (4) a light diffusing coating comprising a phosphorus-treated laminate encapsulating said electrically conductive material, the light diffusing coating having contact with said electroluminescent coating: (b) means for generating an electric current through said conductive material; and (c) a housing for the lighting element, said housing including a means for attachment of said housing to the interior of the vehicle.
9. The light of Claim 8 wherein: (a) said electrically conductive material is aluminum; and (b) said electroluminescent material is a blend of phosphorescent elements.
10. The light of Claim 8 wherein said laminate material is polyethylene terephthalate.
11. The light of Claim 8 further comprising: a pair of electrical connectors for connecting the lighting element to a power source.
12. The light of claim 8 wherein said housing further comprises: (a) a back wall and two side walls; (b) an opening to receive the lighting element; and (c) securement means comprising a flexible metal material having an outwardly pointed terminus, said terminus projecting from said housing into the vehicle fabric surface in the interior of the vehicle to secure said housing to the interior of the vehicle.
13. The light of Claim 12 wherein the securement means comprises: a tab, the terminus of said tab penetrating the soft cloth fabric of the interior of the vehicle.
14. The dome light of Claim 1 wherein the electroluminescent material is a blend of phosphorescent elements.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US169,743 | 1988-03-21 | ||
| US07/169,743 US4864473A (en) | 1988-03-21 | 1988-03-21 | Electroluminescent dome light for a convertible automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1314527C true CA1314527C (en) | 1993-03-16 |
Family
ID=22617003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000592991A Expired - Fee Related CA1314527C (en) | 1988-03-21 | 1989-03-07 | Electroluminescent dome light for a convertible automobile |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4864473A (en) |
| EP (1) | EP0334799A3 (en) |
| JP (1) | JPH01254443A (en) |
| KR (1) | KR890014959A (en) |
| AU (1) | AU619520B2 (en) |
| CA (1) | CA1314527C (en) |
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| JP6338785B2 (en) | 2014-11-25 | 2018-06-06 | サビック グローバル テクノロジーズ ベスローテン フェンノートシャップ | Method and apparatus for heating a surface |
| US9810394B2 (en) | 2015-11-13 | 2017-11-07 | Ford Global Technologies, Llc | Vehicular signal and daytime running light assemblies with uniform illumination |
| CN110844040A (en) * | 2019-10-28 | 2020-02-28 | 西北工业大学 | Aircraft body lighting system |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2733367A (en) * | 1956-01-31 | Electroluminescent lamp structures | ||
| US2920186A (en) * | 1958-01-17 | 1960-01-05 | Gen Motors Corp | Vehicle dome light |
| US3161974A (en) * | 1961-11-30 | 1964-12-22 | Ellis A Blockson | Electroluminescent sign and method of making the same |
| US3313652A (en) * | 1963-05-03 | 1967-04-11 | Westinghouse Electric Corp | Method for making an electroluminescent device |
| US3317722A (en) * | 1965-04-26 | 1967-05-02 | Frances L Whitney | Electroluminescent lamp |
| US4138620A (en) * | 1978-03-24 | 1979-02-06 | Minnesota Mining And Manufacturing Company | Multi-panel electroluminescent light assembly |
| JPS5856942A (en) * | 1981-09-29 | 1983-04-04 | Nissan Motor Co Ltd | Marking body in window glass for car |
| US4593228A (en) * | 1984-05-15 | 1986-06-03 | Albrechtson Loren R | Laminated electroluminescent lamp structure and method of manufacturing |
| DE3575066D1 (en) * | 1984-08-27 | 1990-02-01 | Ball Eng Corp | ELECTROLUMINESCENT LAMP. |
| US4645970A (en) * | 1984-11-05 | 1987-02-24 | Donnelly Corporation | Illuminated EL panel assembly |
| US4684353A (en) * | 1985-08-19 | 1987-08-04 | Dunmore Corporation | Flexible electroluminescent film laminate |
| US4721883A (en) * | 1986-06-02 | 1988-01-26 | Sidney Jacobs | Electroluminescent display and method of making same |
| DE3881446T2 (en) * | 1987-08-07 | 1993-12-02 | Mitsubishi Cable Ind Ltd | Electroluminescent lamp and method of using it. |
-
1988
- 1988-03-21 US US07/169,743 patent/US4864473A/en not_active Expired - Fee Related
-
1989
- 1989-01-19 EP EP89730010A patent/EP0334799A3/en not_active Withdrawn
- 1989-02-02 AU AU29540/89A patent/AU619520B2/en not_active Ceased
- 1989-02-21 JP JP1039505A patent/JPH01254443A/en active Pending
- 1989-03-07 CA CA000592991A patent/CA1314527C/en not_active Expired - Fee Related
- 1989-03-10 KR KR1019890002964A patent/KR890014959A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| US4864473A (en) | 1989-09-05 |
| EP0334799A2 (en) | 1989-09-27 |
| AU2954089A (en) | 1989-09-21 |
| JPH01254443A (en) | 1989-10-11 |
| AU619520B2 (en) | 1992-01-30 |
| EP0334799A3 (en) | 1990-03-21 |
| KR890014959A (en) | 1989-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |