US4504553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Covering for photothermal conversion
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1983-03-30
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Granted: 1985-03-12
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Expires: 2003-03-30
Abstract
Abstract An infrared radiation reflecting substrate, having deposited thereon a first layer formed from a metal or an alloy, and a second layer deposited on the first layer and consisting of a solar radiation absorbing amorphous material, such as amorphous carbon. The substrate can be formed from an infrared radiation reflecting layer deposited on a primary substrate.
Inventors
- 👤 Andre Aubert
- 👤 Jean Valignat
- 👤 Christophe Wyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:02
CPC Classifications
F; F24; F24S; F24S70/00; F24S70/30; F24S70/20; F24S70/225; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y10; Y10S; Y10S126/00; Y10S126/907; Y10S126/908; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12597; Y10T428/12604; Y10T428/12625; Y10T428/12771; Y10T428/12861; Y10T428/12889; Y10T428/12896; Y10T428/12903; Y10T428/12917; Y10T428/12924; Y10T428/12951; Y10T428/12972; Y10T428/12979
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
52 words
A covering for photothermal coversion, comprising an infrared radiation reflecting substrate, a first layer deposited on said substrate and consisting of at least one metal or alloy of said metal, and a second layer deposited on the first layer, said second layer consisting of an amorphous material capable of absorbing solar radiation.
Claim 2
Dependent Claim
52 words
A covering for photothermal coversion, comprising an infrared radiation reflecting substrate, a first layer deposited on said substrate and consisting of at least one metal or alloy of said metal, and a second layer deposited on the first layer, said second layer consisting of an amorphous material capable of absorbing solar radiation.
Claim 3
Dependent Claim
30 words
The covering according to claim 1, wherein the substrate comprises an infrared radiation reflecting layer and a primary substrate, the infrared radiation reflecting layer being deposited on the primary substrate.
Claim 4
Dependent Claim
25 words
The covering according to claim 1, wherein the infrared radiation reflecting layer is a metal selected from the group consisting of copper, silver and gold.
Claim 5
Dependent Claim
30 words
The covering according to claim 1, wherein the first layer is made of at least one of the materials selected from the group consisting of transition metals and their alloys.
Claim 6
Dependent Claim
15 words
The covering according to claim 4, wherein the first layer is made of stainless steel.
Claim 7
Dependent Claim
19 words
The covering according to claim 1, wherein the thickness of the first layer is approximately 10 to 50 nm.
Claim 8
Dependent Claim
15 words
The covering according to claim 1, wherein the second layer is an amorphous carbon layer.
Claim 9
Dependent Claim
24 words
The covering according to claim 1, wherein the thickness of the second layer is equal to or greater than that of the first layer.
Claim 10
Dependent Claim
19 words
The covering according to claim 8, wherein the thickness of the second layer is approximately 50 to 150 nm.
Claim 11
Dependent Claim
17 words
The covering according to claim 1, wherein the first and second layers are deposited by cathodic sputtering.
Claim 12
Dependent Claim
23 words
The covering according to claim 2, wherein the infrared radiation reflecting layer and the first and second layers are deposited by cathodic sputtering.
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |