Patent US3155631A successfully refreshed from Google Patents.
US3155631A
Expired / Lapsed
US
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Semi-conductor, containing ethylene/ethyl acrylate copolymer, petroleum wax and carbon black
Assignee: EIDP Inc
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Filing: 1962-02-19
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Granted: 1964-11-03
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Jr George M Zapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:09
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2475
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A SEMI-CONDUCTIVE COMPOSITION COMPRISING, ON A WEIGHT BASIS, 25 TO 60 PARTS OF AN ETHYLENE/ETHYL ACRYLATE COPOLYMER CONTAINING 15 TO 35% OF COPOLYMERIZED ETHYL ACRYLATE, 75 TO 40 PARTS OF A PETROLEUM WAX, AND 4 TO 30 PARTS PER HUNDRED PARTS OF COMBINED ETHYLENE/ETHYL ACRYLATE COPOLYMER AND PETROLEUM WAX, OF DISPERSED CONDUCTIVE CARBON BLACK.
Claim 2
Dependent Claim
54 words
A SEMI-CONDUCTIVE COMPOSITION COMPRISING, ON A WEIGHT BASIS, 25 TO 60 PARTS OF AN ETHYLENE/ETHYL ACRYLATE COPOLYMER CONTAINING 15 TO 35% OF COPOLYMERIZED ETHYL ACRYLATE, 75 TO 40 PARTS OF A PETROLEUM WAX, AND 4 TO 30 PARTS PER HUNDRED PARTS OF COMBINED ETHYLENE/ETHYL ACRYLATE COPOLYMER AND PETROLEUM WAX, OF DISPERSED CONDUCTIVE CARBON BLACK.
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |