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Patent US3408543A successfully refreshed from Google Patents.
US3408543A
Expired / Lapsed
US
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Combination capacitor and fieldeffect transistor
Assignee: Hitachi Ltd
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Filing: 1965-06-01
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Granted: 1968-10-29
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Ono Minoru
- 👤 Usuda Koji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:13
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/80; H10D84/811; H10D84/813; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3097308A
Cited
US3115581A
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US3102230A
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US3134912A
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US3243669A
Cited
US3229218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |