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US3458781A
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High-voltage planar semiconductor devices
Assignee: Unitrode Corp
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Filing: 1966-07-18
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Granted: 1969-07-29
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Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Edward Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:06
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D62/17; H10D62/192; H10D62/206; H10D62/102; H10D62/103; H10D62/105; H10D62/106; H10D62/124; H10D62/125; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/035; Y10S148/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2959504A
Cited
US3078196A
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US3220896A
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US3223904A
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US3277352A
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US3246172A
Cited
US3312881A
Cited
US3358195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |