US3445735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed controlled rectifiers with deep level dopants
Assignee: RCA Corp
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Filing: 1967-10-05
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Granted: 1969-05-20
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Expires: 1987-10-05
Abstract
No abstract record available.
Inventors
- 👤 Timothy J Desmond
- 👤 Leon S Greenberg
- 👤 Harry Weisberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:57
CPC Classifications
H; H10; H10P; H10P95/00; H10D; H10D99/00; H10P32/00; H10P32/10; H10P32/17; H10P32/171; H10P32/18; Y; Y10; Y10S; Y10S148/00; Y10S148/062; Y10S438/00; Y10S438/914; Y10S438/917
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) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |