Patent US3828000A successfully refreshed from Google Patents.
US3828000A
Expired / Lapsed
US
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Asbestos-thickened cycloaliphatic epoxy materials for use in atmospheres of arced sulfur hexafluoride and articles thereof
Assignee: ABB Inc USA
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Filing: 1971-10-19
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Granted: 1974-08-06
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Expires: 1991-10-19
Abstract
Abstract RELIABILITY OF POWER CIRCUIT BREAKERS AND OTHER EQUIPMENT CONTAINING PARTS SUBJECTED TO AN ENVIRONMENT OF ARCED SULFUR HEXAFLUORIDE IS IMPROVED BY USING A CYCLOALIPHATIC EPOXY RESIN FILLED WITH ALUMINUM TRIHYDRATE AND THICKENED WITH ASBESTOS, PREFERABLY HIGHLY REFINED SHORTFIBER COALING A ASBESTOS.
Inventors
- 👤 R Luck
- 👤 G Gainer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:06
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/021; C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/40; C08G59/42; C08K; C08K13/00; C08K13/04; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1372
Claims Analysis
Total Claims: 0
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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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |