US3669655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ohmic contacts for gallium arsenide semiconductors
Assignee: Texas Instruments Inc
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Filing: 1969-12-03
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Granted: 1972-06-13
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Expires: 1989-12-03
Abstract
Abstract SILVER-BASE ALLOYS CONTAINING INDIUM AND GERMANIUM ARE USED AS OHMIC CONTACTS FOR GALLIUM ARSENIDE SEMICONDUCTOR DEVICES.
Inventors
- 👤 Ronald H Cox
- 👤 Hans A Strack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:58
CPC Classifications
H; H10; H10D; H10D64/00; H10D64/60; C; C22; C22C; C22C5/00; H01; H01B; H01B1/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/018; Y10S148/02
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |