Patent US2867596A successfully refreshed from Google Patents.
US2867596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric cables and condenser insulation including wax and petroleum
Assignee: Dussek Brothers and Co Ltd
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Filing: 1954-07-26
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Granted: 1959-01-06
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Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 Bennett Geoffrey Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:44
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A COMPOSITION FOR THE IMPREGNATION OF FIBROUS MATERIAL FOR THE INSULATION OF THE CONDUCTORS OF CABLES WHICH COMPOSITION CONSISTS OF PETROLATUM CONTAINING FROM 3 PERCENT TO 50 PERCENT BY WEIGHT OF A SYNTHETIC FISCHER TROPSCH HYDROCARBON WAX HAVING A MOLECULAR WEIGHT OF ABOUT 600, A MELTING POINT BETWEEN 108* AND 110*C., A BOILING POINT UNDER ATMOSPHERIC PRESSURE OF ABOVE 460*C., AND LOW DIELECTRIC LOSS, TOGETHER WITH FROM 1 PERCENT TO 40 PERCENT BY WEIGHT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYISOBUTYLENE HAVING A MOLECULAR WEIGHT OF APPROXIMATELY 100,000 AND POLYETHYLENE HAVING A MOLECULAR WEIGHT OF APPROXIMATELY 2,500.
Claim 2
Dependent Claim
102 words
A COMPOSITION FOR THE IMPREGNATION OF FIBROUS MATERIAL FOR THE INSULATION OF THE CONDUCTORS OF CABLES WHICH COMPOSITION CONSISTS OF PETROLATUM CONTAINING FROM 3 PERCENT TO 50 PERCENT BY WEIGHT OF A SYNTHETIC FISCHER TROPSCH HYDROCARBON WAX HAVING A MOLECULAR WEIGHT OF ABOUT 600, A MELTING POINT BETWEEN 108* AND 110*C., A BOILING POINT UNDER ATMOSPHERIC PRESSURE OF ABOVE 460*C., AND LOW DIELECTRIC LOSS, TOGETHER WITH FROM 1 PERCENT TO 40 PERCENT BY WEIGHT OF AT LEAST ONE COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYISOBUTYLENE HAVING A MOLECULAR WEIGHT OF APPROXIMATELY 100,000 AND POLYETHYLENE HAVING A MOLECULAR WEIGHT OF APPROXIMATELY 2,500.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |