US3040266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface field effect transistor amplifier
Assignee: Union Carbide Corp
•
Filing: 1958-06-16
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Granted: 1962-06-19
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Forman Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:19
CPC Classifications
H; H10; H10D; H10D99/00; G; G01; G01R; G01R15/00; H03; H03F; H03F99/00; Y; Y10; Y10S; Y10S322/00; Y10S322/05; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563503A
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US1769874A
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US2524033A
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US2648805A
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US2612567A
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US2754431A
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US2791759A
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US2791758A
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US2897377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |