US3573177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical methods for production of films and coatings of semiconductors
Assignee: United States Department of the Army
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Filing: 1968-01-11
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Granted: 1971-03-30
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Expires: 1988-01-11
Abstract
Abstract ARTICLES BEARING AN ANODICALLY ELECTROLYTICALLY FORMED COATING ON ITS SURFACE, THE COATING COMPRISING IN THE MAIN, A COMPOUND MADE FROM EITHER ZINC OR CADMIUM OR CADMIUM-ZINC ALLOYS AND SULFUR AND/OR SELENIUM, THE COMPOUNDS BEING ELECTROCHEMICALLY FORMED AS COMPOUNDS, AND METHODS THEREFOR.
Inventors
- 👤 William Mcneill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:54
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; C; C25; C25D; C25D9/00; C25D9/04; C25D9/06; H10D; H10D99/00
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |