US3793473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated conductor with organometallic stabilizer
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1971-11-29
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Granted: 1974-02-19
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Expires: 1991-11-29
Abstract
Abstract An electric conductor is insulated with a polyolefine, e.g., polypropylene, containing a phosphorus acid derivative such as nickel bis-(3,5-ditertiary-butyl-4-hydroxy benzyl phosphonic acid monoethylate) and the insulated conductor is immersed in a low molecular weight hydrocarbon such as petroleum jelly.
Inventors
- 👤 B Pointer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:17
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
21 words
A cable according to claim 1, in which the polymer contains 0.1 up to 1.5 percent by weight of the stabiliser.
Claim 2
Dependent Claim
20 words
A cable according to claim 1, in which the olefine polymer of which the insulating layer is formed is polypropylene.
Claim 3
Dependent Claim
28 words
A cable according to claim 1, in which the olefine polymer also contains 0.01 percent up to 2 percent by weight of the polymer of a copper inhibitor.
References Cited (Backward Citations)
US3660444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |