US3568305A
Expired / Lapsed
US
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Method for producing a field effect device
Assignee: LUCAS LEDEX Inc
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Filing: 1968-12-02
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Granted: 1971-03-09
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Expires: 1988-12-02
Abstract
Abstract METHOD FOR PRODUCING A THIN FILM FIELD EFFECT DEVICE HAVING A GATE ELEMENT INSULATED BY ELECTROLYTIC ACTION.
Inventors
- 👤 John L Janning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:01
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/60; H10D30/67; H10D48/00; H10D48/30; H10D48/32; H10D48/36; H10D99/00; H10P; H10P10/00; H10P95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |