Patent US4203443A successfully refreshed from Google Patents.
Patent US3302074A successfully refreshed from Google Patents.
US3302074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor with solid oxide electrolyte pyrolytically produced in wet atmosphere
Assignee: Duracell Inc USA
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Filing: 1964-06-29
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Granted: 1967-01-31
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert D Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:54
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; H01G9/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A METHOD FOR MAKING A SOLID REDUCIBLE OXIDE CAPACITOR INCLUDING THE STEPS OF ELECTROLYTICALLY FORMING A DIELECTRIC OXIDE FILM ON THE SURFACE OF A FILM-FORMING METAL ELECTRODE, COVERING THE SURFACE OF THE FILMED ELECTRODE WITH A SOLUTION OF A MATERIAL CONVERTIBLE TO A SEMICONDUCTIVE REDUCIBLE OXIDE, HEATING SAID ELECTRODE TO A TEMPERATURE FOR PYROLYTICALLY IN SITU COVERTING THE MATERIAL OF SAID SOLUTION TO A LAYER OF SEMICONDUCTIVE REDUCIBLE OXIDE OVERLYING SAID DIELECTRIC FILM, AND APPLYINGF
Claim 2
Dependent Claim
76 words
IN A METHOD FOR MAKING A SOLID REDUCIBLE OXIDE CAPACITOR INCLUDING THE STEPS OF ELECTROLYTICALLY FORMING A DIELECTRIC OXIDE FILM ON THE SURFACE OF A FILM-FORMING METAL ELECTRODE, COVERING THE SURFACE OF THE FILMED ELECTRODE WITH A SOLUTION OF A MATERIAL CONVERTIBLE TO A SEMICONDUCTIVE REDUCIBLE OXIDE, HEATING SAID ELECTRODE TO A TEMPERATURE FOR PYROLYTICALLY IN SITU COVERTING THE MATERIAL OF SAID SOLUTION TO A LAYER OF SEMICONDUCTIVE REDUCIBLE OXIDE OVERLYING SAID DIELECTRIC FILM, AND APPLYINGF
References Cited (Backward Citations)
US3093883A
Cited
US3111428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |