Patent US3108153A successfully refreshed from Google Patents.
US3108153A
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High voltage electrical insulation including gassing inhibitor
Assignee: Ericsson Inc
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Filing: 1959-08-21
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Granted: 1963-10-22
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Expires: 1979-08-21
Abstract
No abstract record available.
Inventors
- 👤 Iii George Feick
- 👤 Walter F Olds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:12
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/30; C; C08; C08K; C08K5/00; C08K5/01; C08L; C08L83/00; C08L83/04; H01B3/00; H01B3/18; H01B3/30; H01B3/46; H01B3/465; H01B7/00; H01B7/17; H01B7/28; Y; Y02; Y02A; Y02A30/00; Y02A30/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
IN HIGH VOLTAGE ELECTRICAL APPARATUS IN WHICH METALLIC CONDUCTORS ARE SURROUNDED BY INSULATION COMPRISING A DIMETHYLPOLYSILOXANE FLUID, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN THE FLUID A SEC-ALKYL-SUBSTITUTED AROMATIC HYDROCARBON COMPOUND HAVING A BOILING POINT, AT ATMOSPHERIC PRESSURE, OF NOT LESS THAN 200*C., THEREBY IMPARTING A NEGATIVE GASSING COEFFICIENT TO THE FLUID.
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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) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |