US3133894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene resin insulating material
Assignee: Cabot Corp
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Filing: 1958-02-06
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Granted: 1964-05-19
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Expires: 1978-02-06
Abstract
No abstract record available.
Inventors
- 👤 Bram B S T Boonstra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:26
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; B; B29; B29C; B29C48/00; B29C48/022; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/14; B29C48/03; B29K; B29K2101/00; B29K2101/10; B29K2301/00; B29K2301/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PLASTIC MOLDING COMPOUND WHICH CAN BE CONVERTED BY HEAT INTO PRODUCTS HAVING A SURPRISING COMBINATION OF PHYSICAL STRENGTH, HEAT STABILITY AND ELECTRICAL PROPERTIES COMPRISING POLYETHYLENE RESIN, CARBON BLACK IN AMOUNTS BETWEEN ABOUT 0.25 AND 1.5 PARTS PER PART BY WEIGHT OF SAID RESIN, A CROSS-LINKING AGENT CONTAINING A PERBENZOXY GROUP AND WHICH IS SUFFICIENTLY NONVOLATILE AND HAS A DECOMPOSITION TEMPERATURE SUFFICIENTLY HIGH TO PERMIT IT TO BE MILLED INTO SAID RESIN, AND AT LEAST ONE PART PER 100 PARTS BY WEIGHT OF SAID RESIN OF METAL OXIDE CHOSE FROM THE GROUP CONSISTING OF MGO, ZNO, CAO, AL2O3, BAO, AND SRO.
Claim 2
Dependent Claim
101 words
A PLASTIC MOLDING COMPOUND WHICH CAN BE CONVERTED BY HEAT INTO PRODUCTS HAVING A SURPRISING COMBINATION OF PHYSICAL STRENGTH, HEAT STABILITY AND ELECTRICAL PROPERTIES COMPRISING POLYETHYLENE RESIN, CARBON BLACK IN AMOUNTS BETWEEN ABOUT 0.25 AND 1.5 PARTS PER PART BY WEIGHT OF SAID RESIN, A CROSS-LINKING AGENT CONTAINING A PERBENZOXY GROUP AND WHICH IS SUFFICIENTLY NONVOLATILE AND HAS A DECOMPOSITION TEMPERATURE SUFFICIENTLY HIGH TO PERMIT IT TO BE MILLED INTO SAID RESIN, AND AT LEAST ONE PART PER 100 PARTS BY WEIGHT OF SAID RESIN OF METAL OXIDE CHOSE FROM THE GROUP CONSISTING OF MGO, ZNO, CAO, AL2O3, BAO, AND SRO.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |