US4376713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
AC Electrolytic capacitor electrolyte
Assignee: UNITED CHEMI-CON MANUFACTURING Inc
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Filing: 1977-12-21
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Granted: 1983-03-15
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Expires: 1997-12-21
Abstract
Abstract An electrolyte for an AC motor-start electrolytic capacitor consists essentially of 10 to 40 wt % mono(diethylammonium) or mono(triethylammonium) adipate as solute in ethylene glycol as solvent.
Inventors
- 👤 Franz S. Dunkl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:17
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
51 words
An electrolyte for an aluminum AC motor-start capacitor consisting essentially of 10 to 40 wt % of a solute selected from mono-diethyl-ammonium adipate and mono-triethylammonium adipate and as solvent, ethylene glycol and a minor amount of water, said electrolyte having a resistivity measured at 25° C. of 475 to 1039 ohm-cm.
Claim 2
Dependent Claim
51 words
An electrolyte for an aluminum AC motor-start capacitor consisting essentially of 10 to 40 wt % of a solute selected from mono-diethyl-ammonium adipate and mono-triethylammonium adipate and as solvent, ethylene glycol and a minor amount of water, said electrolyte having a resistivity measured at 25° C. of 475 to 1039 ohm-cm.
Claim 3
Dependent Claim
30 words
An electrolyte according to claim 1 wherein said solute is prepared in the ethylene glycol solvent by reacting adipic acid and diethylamine or triethylamine therein in a 1:1 mole ratio.
References Cited (Backward Citations)
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Cited
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GB984737A
Cited
US3547423A
Cited
US3609467A
Cited
DE2209095A1
Cited
US3812039A
Cited
US4031436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-14 | 1986-09-13 | 1987-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-14 | 1990-09-13 | 1991-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-14 | 1994-09-13 | 1995-03-15 | $7700.00 | Window Closed / Lapsed |