US3082360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic capacitors
Assignee: Sprague Electric Co
•
Filing: 1953-05-13
•
Granted: 1963-03-19
•
Expires: 1973-05-13
Abstract
No abstract record available.
Inventors
- 👤 Robinson Preston
- 👤 Richard J Millard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:27
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/042; H01G9/0425
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
AN ELECTROLYTIC CONDENSER IN WHICH ONE ELECTRODE ONLY HAS BEEN SUBJECTED TO THE FORMING PROCESS, COMPRISING A CASING ADAPTED TO ACT AS THE OTHER ELECTRODE, AND MEANS FOR ENLARGING THE SURFACE OF SAID OTHER ELECTRODE WHICH IS IN CONTACT WITH THE ELECTROLYTE, SAID MEANS COMPRISING A COATING OF SPONGY NOBLE METAL ON THE PARTS OF SAID OTHER
Claim 2
Dependent Claim
57 words
AN ELECTROLYTIC CONDENSER IN WHICH ONE ELECTRODE ONLY HAS BEEN SUBJECTED TO THE FORMING PROCESS, COMPRISING A CASING ADAPTED TO ACT AS THE OTHER ELECTRODE, AND MEANS FOR ENLARGING THE SURFACE OF SAID OTHER ELECTRODE WHICH IS IN CONTACT WITH THE ELECTROLYTE, SAID MEANS COMPRISING A COATING OF SPONGY NOBLE METAL ON THE PARTS OF SAID OTHER
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |