US3124454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making silicon carbide negative resistance diode
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:52
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/04; H10; H10D; H10D1/00; H10D1/40; H10D62/00; H10D62/80; H10D62/83; H10D62/832; H10D62/8325; H10D8/00; H10D8/01; H10D8/051; Y; Y10; Y10S; Y10S148/00; Y10S148/148; Y10S438/00; Y10S438/931; Y10S438/979
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2937323A
Cited
US3027501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |