US3397446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film capacitors employing semiconductive oxide electrolytes
Assignee: AT&T Inc
•
Filing: 1965-07-09
•
Granted: 1968-08-20
•
Expires: 1985-07-09
Abstract
No abstract record available.
Inventors
- 👤 Sharp Donald Jex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:24
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/0029; H01G9/0036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3093883A
Cited
US3166693A
Cited
US3254390A
Cited
US2993266A
Cited
US3156633A
Cited
US3320484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |