US3835055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytes for low series-resistance,aluminum electrolytic capacitors
Assignee: LES CONDENSATEURS SIC SAFCO
•
Filing: 1972-10-12
•
Granted: 1974-09-10
•
Expires: 1992-10-12
Abstract
Abstract AN AQUEOUS ELECTROLYTE FOR ALUMINUM-ANODE CAPACITORS IS COMPRISED MAINLY OF AN ACID SUCH AS MALEIC ACID, A MALEATE OF AN ALIPHATIC AMINE SUCH AS TRIETHYLAMINE, ORTHOPHOPHORIC ACID, A SOLVENT SUCH AS DIMETHYLFORMAMIDE, AND OPTIONALLY A SMALL QUANTITY OF BORIC ACID. SUCH AN ELECTROLYTE OFFERS HIGH ELECTRICAL CONDUCTIVITY AND FOR ALL PRACTICAL PURPOSES A SUFFICIENTLY HIGH MAXIMUM BUILDUP VOLTAGE, THE CAPACITORS WHICH UTILIZE SUCH ELECTROLYTE BEING USABLE OVER A WIDE TEMPERATURE RANGE.
Inventors
- 👤 B Chesnot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:32
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |