US3351823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-aqueous capacitor electrolyte having a salt dissolved in a co- solvent
Assignee: —
•
Filing: —
•
Granted: 1967-11-07
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Expires: 1984-11-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:56
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; H; H01; H01G; H01G11/00; H01G11/54; H01G11/58; H01G11/60; H01G11/62; H01G9/00; H01G9/004; H01G9/022; H01G9/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN ELECTROLYTIC CAPACITOR COMPRISING: (A) A PLURALITY OF SPACED ELECTRODES AT LEAST ONE OF WHICH IS COATED WITH A METALLIC OXIDE LAYER; (B) AND AN ELECTROLYTE IN CONTACT WITH SAID ELECTRODES; (C) SAID ELECTROLYTE COMPRISING A SOLVENT INCLUDING: (1) 15.2% TO 21.8% BY WEIGHT OF N-METHYL PYRROLIDONE; (2) 38.5% TO 55.0% BY WEIGHT OF BUTYROLACTONE AND; (3) 21.9% TO 46.2% BY WEIGHT OF A MODIFYING AGENT SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF DIMETHYL FORMAMIDE, DIMETHYL ACETAMIDE, DIMETHYL PROPIONAMIDE, N-ETHYLACETAMIDE, ETHYLENE GLYCOL, DIMETHYL SULFOXIDE, DIETHYLCVANAMIDE, AND TRIBUTYLAMINE;
Claim 2
Dependent Claim
87 words
AN ELECTROLYTIC CAPACITOR COMPRISING: (A) A PLURALITY OF SPACED ELECTRODES AT LEAST ONE OF WHICH IS COATED WITH A METALLIC OXIDE LAYER; (B) AND AN ELECTROLYTE IN CONTACT WITH SAID ELECTRODES; (C) SAID ELECTROLYTE COMPRISING A SOLVENT INCLUDING: (1) 15.2% TO 21.8% BY WEIGHT OF N-METHYL PYRROLIDONE; (2) 38.5% TO 55.0% BY WEIGHT OF BUTYROLACTONE AND; (3) 21.9% TO 46.2% BY WEIGHT OF A MODIFYING AGENT SELECTED FROM THE GROUP CONSISTING ESSENTIALLY OF DIMETHYL FORMAMIDE, DIMETHYL ACETAMIDE, DIMETHYL PROPIONAMIDE, N-ETHYLACETAMIDE, ETHYLENE GLYCOL, DIMETHYL SULFOXIDE, DIETHYLCVANAMIDE, AND TRIBUTYLAMINE;
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |