US2979479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone rubber of improved tear strength
Assignee: General Electric Co
•
Filing: 1957-07-15
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Granted: 1961-04-11
•
Expires: 1977-07-15
Abstract
No abstract record available.
Inventors
- 👤 Frank J Modic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:50
CPC Classifications
C; C08; C08L; C08L83/00; C08G; C08G77/00; C08G77/04; C08G77/20; C08G77/12; C08G77/14; C08G77/16; C08G77/18; C08G77/22; C08G77/24; C08G77/70; C08K; C08K3/00; C08K3/34; C08K3/36; C08L83/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A COMPOSITION OF MATTER COMPRISING (1) AN ORGANOPOLYSILOXANE CONVERTIBLE BY HEAT TO THE CURED, SOLID, ELASTIC STATE, THERE BEING PRESENT IN SAID ORGANOPOLYSILOXANE FROM 1.95 TO 2.25 SILICON-BONDED ORGANO GROUPS SELECTED FROM THE CLASS CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND CHLORINATED PHENYL RADICALS PER SILICON ATOM, (2) FROM 10 TO 300% BY WEIGHT, BASED ON THE WEIGHT OF (1), OF A FINELY DIVIDED SILICA FILLER AND (3) FROM 1 TO 20 PERCENT, BY WEIGHT, BASED ON THE WEIGHT OF (1) OF A METHYLPOLYSILOXANE COPOLYMER COMPOSED ESSENTIALLY OF TRIMETHYLSILOXY GROUPS AND SIO2 GROUPS, THERE BEING PRESENT FROM 1.0 TO 1.5 METHYL GROUPS PER SILICON ATOM IN THE AFORESAID METHYLPOLYSILOXANE COPOLYMER.
Claim 2
Dependent Claim
109 words
A COMPOSITION OF MATTER COMPRISING (1) AN ORGANOPOLYSILOXANE CONVERTIBLE BY HEAT TO THE CURED, SOLID, ELASTIC STATE, THERE BEING PRESENT IN SAID ORGANOPOLYSILOXANE FROM 1.95 TO 2.25 SILICON-BONDED ORGANO GROUPS SELECTED FROM THE CLASS CONSISTING OF MONOVALENT HYDROCARBON RADICALS AND CHLORINATED PHENYL RADICALS PER SILICON ATOM, (2) FROM 10 TO 300% BY WEIGHT, BASED ON THE WEIGHT OF (1), OF A FINELY DIVIDED SILICA FILLER AND (3) FROM 1 TO 20 PERCENT, BY WEIGHT, BASED ON THE WEIGHT OF (1) OF A METHYLPOLYSILOXANE COPOLYMER COMPOSED ESSENTIALLY OF TRIMETHYLSILOXY GROUPS AND SIO2 GROUPS, THERE BEING PRESENT FROM 1.0 TO 1.5 METHYL GROUPS PER SILICON ATOM IN THE AFORESAID METHYLPOLYSILOXANE COPOLYMER.
References Cited (Backward Citations)
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Cited
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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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |