US2912382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical insulating structure and method of making the same
Assignee: General Electric Co
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Filing: 1957-09-05
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Granted: 1959-11-10
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Expires: 1977-09-05
Abstract
No abstract record available.
Inventors
- 👤 Tseng W Liao
- 👤 Frank S Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:03
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/16; Y; Y10; Y10T; Y10T428/00; Y10T428/8305; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2475
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A METHOD OF MAKING AN ELECTRICAL INSULATING STRUCTURE WHICH COMPRISES IMPREGNATING UNDER A VACUUM POROUS INSULATING BASE MATERIAL WITH A GASEOUS DIELECTRIC MATERIAL HAVING A DIELECTRIC STRENGTH SUBSTANTIALLY GREATER THAN AIR, IMPREGNATING UNDER A VACUUM THE THUS TREATED POROUS INSULATING BASE MATERIAL WITH A HARDENABLE LIQUID SYNTHETIC RESIN DIELECTRIC MATERIAL, AND THEREAFTER HARDENING THE LIQUID RESIN DIELECTIC MATERIAL IN THE INSULATING BASE MATERIAL.
References Cited (Backward Citations)
US1729057A
Cited
US1547539A
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US1717243A
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US1869308A
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US2797373A
Cited
US2867679A
Cited
US2858492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |