US3413145A
Expired / Lapsed
US
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Method of forming a crystalline semiconductor layer on an alumina substrate
Assignee: RCA Corp
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Filing: 1965-11-29
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Granted: 1968-11-26
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Expires: 1985-11-29
Abstract
No abstract record available.
Inventors
- 👤 Paul H Robinson
- 👤 David J Dumin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:00
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/02; C30B29/06; C22; C22F; C22F1/00; C22F1/16; C30B33/00; H; H10; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/29; H10P14/2901; H10P14/2921; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; H10P14/36; Y; Y10; Y10S; Y10S148/00; Y10S148/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |