US3823347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid electrolytic capacitor
Assignee: National Components Ind Inc
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Filing: 1972-04-19
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Granted: 1974-07-09
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Expires: 1992-04-19
Abstract
Abstract A solid electrolytic capacitor having a stem extending from a porous anode and carrying a semi-conductive layer deposited over a dielectric film. An inorganic mask is placed over the stem in the region where it emerges from the anode, which mask prevents creepage of the semi-conductive layer onto the stem and also, serves to strengthen the area where the stem emerges from the anode.
Inventors
- 👤 S Karlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:26
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/008; H01G9/012; H01G9/08; H01G9/10
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |