US3463977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optimized double-ring semiconductor device
Assignee: Fairchild Semiconductor Corp
•
Filing: 1966-04-21
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Granted: 1969-08-26
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Expires: 1986-04-21
Abstract
No abstract record available.
Inventors
- 👤 Andrew S Grove
- 👤 Otto Leistiko
- 👤 Ronald J Whittier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:26
CPC Classifications
H; H10; H10D; H10D64/00; H10D64/20; H10D8/00; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/02; Y10S148/049; Y10S148/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3204160A
Cited
GB998388A
Cited
US3302076A
Cited
FR1400150A
Cited
NL6413894A
Cited
US3303059A
Cited
US3391287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |