US3445732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field effect device having an electrolytically insulated gate
Assignee: Ledex Inc
•
Filing: 1965-06-28
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Granted: 1969-05-20
•
Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 John L Janning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:32
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)
US1900018A
Cited
US3258663A
Cited
US3191061A
Cited
US3273027A
Cited
US3241931A
Cited
US3290569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |