US4420791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric fluid
Assignee: Yosemite Investments Inc
•
Filing: 1981-12-28
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Granted: 1983-12-13
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Expires: 2001-12-28
Abstract
Abstract A dielectric fluid provides a mixture of a diarylethane compound and 10% to 80% by volume of an epoxide additive.
Inventors
- 👤 Vandos Shedigian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:45
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01G4/221
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
33 words
A dielectric fluid comprising a mixture of about 70% by volume of a diarylethane compound and about 30% by volume of an epoxide additive effective to improve the dielectric constant of the fluid.
Claim 2
Dependent Claim
33 words
A dielectric fluid comprising a mixture of about 70% by volume of a diarylethane compound and about 30% by volume of an epoxide additive effective to improve the dielectric constant of the fluid.
Claim 3
Dependent Claim
13 words
The dielectric fluid of claim 1, wherein said diarylethane compound is phenylxylyl ethane.
Claim 4
Dependent Claim
16 words
The dielectric fluid of claim 2, wherein said epoxide additive is 3, 4 epoxycyclohexylmethyl-3, 4-epoxycyclohexane carboxylate.
Claim 5
Dependent Claim
11 words
The dielectric fluid of claim 2, further comprising a phenolic antioxidant.
Claim 6
Dependent Claim
9 words
A capacitor including the dielectric fluid of claim 1.
References Cited (Backward Citations)
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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) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |