Patent US2837494A successfully refreshed from Google Patents.
US2837494A
Expired / Lapsed
US
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Silicone rubber of improved thermal stability containing triorganophosphine oxide
Assignee: General Electric Co
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Filing: 1954-12-28
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Granted: 1958-06-03
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Expires: 1974-12-28
Abstract
No abstract record available.
Inventors
- 👤 Alfred R Gilbert
- 👤 Simon W Kantor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5397
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A CURABLE COMPOSITION OF MATTER COMPRISING (1) AN ORGANOPOLYSILOXANE CONVERTIBLE TO THE CURED, SOLID, ELASTIC STATE, SAID ORGANOPOLYSILOXANE HAVING AN AVERAGE OF FROM 1.95 TO 2.0 ORGANIC GROUPS SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL ARALKYLM AND HALOARYL RADICALS PER SILICON ATOM, WITH AT LEAST 90 PERCENT OF THE SILICON ATOM, IN SAID ORGANOPOLYSILOXANE CONTAINING TWO SILICON-BONDED ALHYL RADICALS, AND (2) FROM 0.001 TO 10 PERCENT, BY WEIGHT, BASED ON THE WEIGHT OF THE CONVERTIBLE ORGANOPOLYSILOXANE, OF A TRIORGANOPHOSPHINE OXIDE HAVING THE FORMULA.
Claim 2
Dependent Claim
84 words
A CURABLE COMPOSITION OF MATTER COMPRISING (1) AN ORGANOPOLYSILOXANE CONVERTIBLE TO THE CURED, SOLID, ELASTIC STATE, SAID ORGANOPOLYSILOXANE HAVING AN AVERAGE OF FROM 1.95 TO 2.0 ORGANIC GROUPS SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL ARALKYLM AND HALOARYL RADICALS PER SILICON ATOM, WITH AT LEAST 90 PERCENT OF THE SILICON ATOM, IN SAID ORGANOPOLYSILOXANE CONTAINING TWO SILICON-BONDED ALHYL RADICALS, AND (2) FROM 0.001 TO 10 PERCENT, BY WEIGHT, BASED ON THE WEIGHT OF THE CONVERTIBLE ORGANOPOLYSILOXANE, OF A TRIORGANOPHOSPHINE OXIDE HAVING THE FORMULA.
References Cited (Backward Citations)
US2673210A
Cited
US2739952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |