US3708728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic capacitor electrode comprising semiconductor core with film-forming metal coating
Assignee: International Standard Electric Corp
•
Filing: 1971-06-10
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Granted: 1973-01-02
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Expires: 1991-06-10
Abstract
Abstract This invention relates to an electrode for an electrolytic capacitor comprising a compacted porous semiconductor body of valve metal coated particles.
Inventors
- 👤 H Sterling
- 👤 E Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:51
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/042; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
An electrode for an electrolytic capacitor comprising a compacted porous body of valve metal coated silicon carbide particles.
Claim 2
Dependent Claim
12 words
An electrode according to claim 1, wherein said valve metal is tantalum.
References Cited (Backward Citations)
US2299228A
Cited
US3256468A
Cited
US3302073A
Cited
US3325699A
Cited
US3330999A
Cited
US3430108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |