US4160045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a scabrous photosensitive surface
Assignee: United States Department of the Army
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Filing: 1978-07-25
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Granted: 1979-07-03
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Expires: 1998-07-25
Abstract
Abstract A layer of indium is deposited as small islands on a photosensitive material. The islands and the material not covered by the islands are bombarded with ions to cause sputtering of the islands and the material. When the islands have been sputtered away, the material has a surface consisting of cones and pyramids. Such a surface is more efficient at absorbing photons than is a smooth surface.
Inventors
- 👤 Randolph E. Longshore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:28
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/70; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A method for producing, in a vacuum, a scabrous finish on a surface, including the steps of: depositing on said surface small islands of a protective material; and bombarding said surface and said islands with charged particles to remove said islands and the surface between said islands by sputtering.
Claim 2
Independent Claim
49 words
A method for producing, in a vacuum, a scabrous finish on a surface, including the steps of: depositing on said surface small islands of a protective material; and bombarding said surface and said islands with charged particles to remove said islands and the surface between said islands by sputtering.
Claim 3
Dependent Claim
19 words
The method as recited in claim 1 wherein the step of depositing is performed by evaporation of said material.
Claim 4
Dependent Claim
10 words
The product as produced by either claim 1 or 2.
References Cited (Backward Citations)
US4005698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-02 | 1983-01-01 | 1983-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-02 | 1987-01-01 | 1987-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-02 | 1991-01-01 | 1991-07-03 | $7700.00 | Window Closed / Lapsed |