US3159775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device and method of manufacture
Assignee: GTE Sylvania Inc
•
Filing: 1960-11-30
•
Granted: 1964-12-01
•
Expires: 1980-11-30
Abstract
No abstract record available.
Inventors
- 👤 Robert C Ingraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121; Y10T29/49124; Y10T29/4913; Y10T29/49139; Y10T29/4914; Y10T29/49142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2634322A
Cited
US2836878A
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US2705768A
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US2813326A
Cited
US2906930A
Cited
US2917684A
Cited
US3021461A
Cited
US3080510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |