Patent US2533501A successfully refreshed from Google Patents.
US2533501A
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US
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Electrical insulation comprising polytetrafluoroethylene
Assignee: Westinghouse Electric Corp
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Filing: 1948-03-24
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Granted: 1950-12-12
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Expires: 1968-03-24
Abstract
No abstract record available.
Inventors
- 👤 Wesley W Pendleton
- 👤 Harold M Philofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:32
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; H01B3/445; H02; H02K; H02K3/00; H02K3/32; H02K3/34; Y; Y10; Y10S; Y10S138/00; Y10S138/03; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249922; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
AN INSULATED ELECTRAL CONDUCTOR COMPRISING IN COMBINATION, AN ELECTRICAL CONDUCTOR AND INSULATION APPLIED THERETO, THE INSULATION COMPRISING SOLID POLYTETRAFLUOROETHYLENE AND PETROLEUM ASPHALT APLIED THERETO, THE ASPHALT BEING APPLIED BETWEEN THE CONDUCTOR AND THE SOLID POLYTETRAFLUOROETHYLENE TO PROVIDE SOLID VOIDLESS INSULATION ADN TO BOND TO THE POLYTETRAFLUOROETHYLENE, THE PETROLEUM ASPHALT HAVING A BALL AND RING SOFTENING POINT OF BETWEEN 50*C. AND 130*C.
Claim 2
Dependent Claim
61 words
AN INSULATED ELECTRAL CONDUCTOR COMPRISING IN COMBINATION, AN ELECTRICAL CONDUCTOR AND INSULATION APPLIED THERETO, THE INSULATION COMPRISING SOLID POLYTETRAFLUOROETHYLENE AND PETROLEUM ASPHALT APLIED THERETO, THE ASPHALT BEING APPLIED BETWEEN THE CONDUCTOR AND THE SOLID POLYTETRAFLUOROETHYLENE TO PROVIDE SOLID VOIDLESS INSULATION ADN TO BOND TO THE POLYTETRAFLUOROETHYLENE, THE PETROLEUM ASPHALT HAVING A BALL AND RING SOFTENING POINT OF BETWEEN 50*C. AND 130*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |