US2910633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic capacitor
Assignee: Fansteel Inc
•
Filing: 1952-09-12
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Granted: 1959-10-27
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Expires: 1972-09-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Ralph J Hovey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:47
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A POLARIZED, SEALED ELECTROLYTIC CAPACITOR COMPRISING A MINERAL ACID ELECTROLYTE, A CATHODE OF A NOBLE METAL SUBSTANTIALLY INSOLUBLE IN THE ELECTROLYTE, AND A TANTALUM ANODE, SAID ELECTROLYTE INCLUDING IONS OF METAL ELECTRO CHEMICALLY NEGATIVE TO THE CATHODE AND WHICH PLATE OUT PREFERENTIALLY WITH RESPECT TO HYDROGEN ON THE CATHODE.
Claim 2
Dependent Claim
49 words
A POLARIZED, SEALED ELECTROLYTIC CAPACITOR COMPRISING A MINERAL ACID ELECTROLYTE, A CATHODE OF A NOBLE METAL SUBSTANTIALLY INSOLUBLE IN THE ELECTROLYTE, AND A TANTALUM ANODE, SAID ELECTROLYTE INCLUDING IONS OF METAL ELECTRO CHEMICALLY NEGATIVE TO THE CATHODE AND WHICH PLATE OUT PREFERENTIALLY WITH RESPECT TO HYDROGEN ON THE CATHODE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |