Patent US4215490A successfully refreshed from Google Patents.
Patent US2586345A successfully refreshed from Google Patents.
US2586345A
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Electric cable having a nonmigratory insulating compound
Assignee: Balfour Beatty PLC
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Filing: 1946-01-07
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Granted: 1952-02-19
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Expires: 1966-01-07
Abstract
No abstract record available.
Inventors
- 👤 King Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/06; H01B9/0611
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
AN IMPREGNATED PAPER-INSULATED ELECTRIC CABLE COMPRISING A CONDUCTOR, AN INTERSTICED LAMINATED BODY OF PAPER SURROUNDING SAID CONDUCTOR, AN IMPERVIOUS SHEATH SURROUNDING SAID LAMINATED BODY, AND A NORMALLY PLASTIC SOLID COMPRISING A MICRO-CRYSTALLINE PETROLEUM WAX HAVING A MELTING POINT OF AT LEAST 80* C. IN THE INTERSTICES OF SAID BODY AND IMPREGNATING THE PAPER OF WHICH SAID BODY IS FORMED.
Claim 2
Dependent Claim
59 words
AN IMPREGNATED PAPER-INSULATED ELECTRIC CABLE COMPRISING A CONDUCTOR, AN INTERSTICED LAMINATED BODY OF PAPER SURROUNDING SAID CONDUCTOR, AN IMPERVIOUS SHEATH SURROUNDING SAID LAMINATED BODY, AND A NORMALLY PLASTIC SOLID COMPRISING A MICRO-CRYSTALLINE PETROLEUM WAX HAVING A MELTING POINT OF AT LEAST 80* C. IN THE INTERSTICES OF SAID BODY AND IMPREGNATING THE PAPER OF WHICH SAID BODY IS FORMED.
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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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |