Patent US3404319A successfully refreshed from Google Patents.
US3404319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: NEC Corp
•
Filing: 1965-08-18
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Granted: 1968-10-01
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Expires: 1985-08-18
Abstract
No abstract record available.
Inventors
- 👤 Tsuji Shigeru
- 👤 Anazawa Shinzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:42
CPC Classifications
H; H10; H10W; H10W95/00; H10W70/00; H10W70/40; H10W70/479; H10W72/00; H10W72/50; H10W72/531; H10W72/533; H10W72/534; H10W72/541; H10W72/5449; H10W72/551; H10W72/552; H10W90/00; H10W90/701; H10W90/751; H10W90/756; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3072832A
Cited
US3220095A
Cited
US3199003A
Cited
US3264712A
Cited
US3335336A
Cited
US3271625A
Cited
US3239719A
Cited
US3341649A
Cited
US3340347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |