US3514844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making field-effect device with insulated gate
Assignee: Raytheon Co
•
Filing: 1967-12-26
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Granted: 1970-06-02
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Expires: 1987-12-26
Abstract
No abstract record available.
Inventors
- 👤 Robert W Bower
- 👤 Gordon A Shifrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:36
CPC Classifications
H; H10; H10D; H10D99/00; H10D30/00; H10D30/01; H10D30/021; H10D30/60; H10P; H10P10/00; H10P30/00; H10P30/20; H10P95/00; H10W; H10W74/00; H10W74/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735948A
Cited
US2989385A
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US3200019A
Cited
US3388009A
Cited
US3388009B1
Cited
US3351503A
Cited
US3413531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |