Patent US2090901A successfully refreshed from Google Patents.
US4158079A
Expired / Lapsed
US
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Composite material and a process and device for its manufacture
Assignee: Rio Tinto Switzerland AG
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Filing: 1977-01-31
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Granted: 1979-06-12
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Expires: 1997-01-31
Abstract
Abstract A composite material for graphical applications, in particular for nameplate production and having foil of aluminium or one of its alloys stuck on to a support foil. This aluminium foil bears on its side facing away from the supporting layer an aluminium oxide layer, which is thick by comparison with the thickness of the aluminium foil, on top of which there is a further layer of a light sensitive plastic.
Inventors
- 👤 Harald Severus-Laubenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:11
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/20; G03F7/2002; G03F7/2014; G03F7/26; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/14; Y10T428/1467; Y10T428/24; Y10T428/24479; Y10T428/24612; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/266; Y10T428/269; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
A composite material comprising in combination: a first layer of flexible plastic material exhibiting the property of ultra-violet absorption; a second layer having a specific thickness connected in facing relationship to said first layer with an adhesive capable of being removed by an organic solvent, and composed of aluminum or an alloy thereof; a third layer of aluminum oxide having a thickness of at least 3 microns, disposed on said second layer; and a fourth photoresist layer disposed on said third layer and composed of a light-sensitive plastic, wherein portions of said photoresist layer are hardened by ultra-violet light and wherein the unhardened portion of the photoresist layer is removed chemically and the second and third layers thereunder are removed by etching and wherein the adhesive thereunder is removed to expose the first layer.
Claim 2
Dependent Claim
134 words
A composite material comprising in combination: a first layer of flexible plastic material exhibiting the property of ultra-violet absorption; a second layer having a specific thickness connected in facing relationship to said first layer with an adhesive capable of being removed by an organic solvent, and composed of aluminum or an alloy thereof; a third layer of aluminum oxide having a thickness of at least 3 microns, disposed on said second layer; and a fourth photoresist layer disposed on said third layer and composed of a light-sensitive plastic, wherein portions of said photoresist layer are hardened by ultra-violet light and wherein the unhardened portion of the photoresist layer is removed chemically and the second and third layers thereunder are removed by etching and wherein the adhesive thereunder is removed to expose the first layer.
Claim 3
Dependent Claim
31 words
A composite material according to claim 1 wherein said first layer on the side facing said second layer has defined therein a mechanically roughened surface to produce a matte surface finish.
Claim 4
Dependent Claim
17 words
A composite material according to claim 1 wherein said first layer is substantially transparent to visible light.
Claim 5
Dependent Claim
14 words
A composite material according to claim 1 wherein said first layer exhibits a color.
Claim 6
Dependent Claim
20 words
A composite material according to claim 1 wherein said second layer has a thickness of from 5 to 100 microns.
Claim 7
Dependent Claim
20 words
A composite material according to claim 1 wherein said first layer has a thickness of from 100 to 200 microns.
Claim 8
Dependent Claim
15 words
A composite material according to claim 1 wherein said third layer is colored and sealed.
Claim 9
Dependent Claim
13 words
A composite material according to claim 1 wherein said first layer is phosphorescent.
Claim 10
Dependent Claim
130 words
A composite material comprising in combination: a first layer of flexible plastic material exhibiting the property of ultra-violet absorption; a second foil layer having a thickness of from 5 to 100 microns adhesively bonded to said first layer and composed of aluminum or an alloy thereof; a third layer of colored and sealed aluminum oxide having a thickness of at least 3 microns disposed on said second layer; and a fourth photoresist layer disposed on said third layer and composed of a light-sensitive plastic, wherein portions of said photoresist layer are hardened by ultra-violet light, and wherein the unhardened portion of the photoresist layer is removed chemically and the second and third layers thereunder are removed by etching and wherein the adhesive thereunder is removed to expose the first layer.
Claim 11
Dependent Claim
130 words
A composite material comprising in combination: a first layer of flexible plastic material exhibiting the property of ultra-violet absorption; a second foil layer having a thickness of from 5 to 100 microns adhesively bonded to said first layer and composed of aluminum or an alloy thereof; a third layer of colored and sealed aluminum oxide having a thickness of at least 3 microns disposed on said second layer; and a fourth photoresist layer disposed on said third layer and composed of a light-sensitive plastic, wherein portions of said photoresist layer are hardened by ultra-violet light, and wherein the unhardened portion of the photoresist layer is removed chemically and the second and third layers thereunder are removed by etching and wherein the adhesive thereunder is removed to expose the first layer.
References Cited (Backward Citations)
US3089800A
Cited
US3148099A
Cited
US3290203A
Cited
US3704176A
Cited
US3520758A
Cited
US3711313A
Cited
US3765994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-11 | 1982-12-11 | 1983-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-11 | 1986-12-11 | 1987-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-11 | 1990-12-11 | 1991-06-12 | $7700.00 | Window Closed / Lapsed |