US3550292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device and method of manufacturing the same
Assignee: NEC Corp
•
Filing: 1968-08-23
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Granted: 1970-12-29
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Expires: 1988-08-23
Abstract
No abstract record available.
Inventors
- 👤 Toshiaki Irie
- 👤 Yoshiyuki Nanko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:41
CPC Classifications
H; H10; H10D; H10D10/00; H10D10/40; H10D10/441; H10D99/00; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306; H10P14/6308; H10P14/6309; H10P14/6322; H10P14/6326; H10P14/6328; H10P14/6334; H10P14/69; H10P14/692; H10P14/6921; H10P14/69215; H10P95/00; H10W; H10W20/00; H10W20/40; Y; Y10; Y10S; Y10S148/00; Y10S148/026; Y10S148/043; Y10S148/085; Y10S148/117; Y10S148/145; Y10S438/00; Y10S438/981
Claims Analysis
Total Claims: 0
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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) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |