Patent US7274906B1 successfully refreshed from Google Patents.
US2977262A
Expired / Lapsed
US
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Semiconductor devices including gallium-containing electrodes
Assignee: RCA Corp
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Filing: 1955-05-19
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Granted: 1961-03-28
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Expires: 1975-05-19
Abstract
No abstract record available.
Inventors
- 👤 Carl L Carlson
- 👤 Nelson Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:50
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/04; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
57 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF A SEMI-CONDUCTIVE MATERIAL SELECTED FROM THE CLASS CONSISTING OF GERMANIUM AND SILICON HAVING A RECTIFYING ELECTRODE SURFACE ALLOYED THERETO, SAID ELECTRODE COMPRISING BY WEIGHT PRINCIPALLY INDIUM ALLOYED WITH .05% TO LESS THAN 1% GALLIUM AND UP TO 10% OF A METAL SELECTED FROM THE CLASS CONSISTING OF SILVER AND GOLD.
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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |