US3132057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graded energy gap semiconductive device
Assignee: Raytheon Co
•
Filing: 1959-01-29
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Granted: 1964-05-05
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Expires: 1979-01-29
Abstract
No abstract record available.
Inventors
- 👤 Leon S Greenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:07
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/60; H10D10/00; H10D99/00; H10D62/10; Y; Y10; Y10S; Y10S148/00; Y10S148/059; Y10S148/067; Y10S148/072; Y10S148/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB805493A
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US2855334A
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US2843515A
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US2944975A
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US2846340A
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US2878152A
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US2929859A
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US2961475A
Cited
US3111611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |