US2521528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic hydrocarbon-substituted polysiloxanes and tertiary butyl perbenzoate as catalyst
Assignee: General Electric Co
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Filing: 1947-07-24
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Granted: 1950-09-05
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Expires: 1967-07-24
Abstract
No abstract record available.
Inventors
- 👤 Marsden James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:34
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A HEAT-CONVERTIBLE COMPOSITION OF MATTER COMPRISING (1) A SOLID, ELASTIC, CURABLE, POLYMERIZED HYDROCARBON-SUBSTITUTED POLYSILOXANE WHEREIN THE HYDROCARBON RADICAL IS SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL, ARALKYL, AND ALKARYL RADICALS, AND CONTAINING AN AVERAGE OF FROM 1.95 TO 2.0 HYDROCARBON GROUPS PER SILICON ATOM AND (2) TERTIARY BUTYL PERBENZOATE PRESENT, BY WEIGHT, IN AN AMOUNT EQUAL TO FROM ABOUT 0.25 TO 6 PER CENT OF THE WEIGHT OF (1).
Claim 2
Dependent Claim
70 words
A HEAT-CONVERTIBLE COMPOSITION OF MATTER COMPRISING (1) A SOLID, ELASTIC, CURABLE, POLYMERIZED HYDROCARBON-SUBSTITUTED POLYSILOXANE WHEREIN THE HYDROCARBON RADICAL IS SELECTED FROM THE CLASS CONSISTING OF ALKYL, ARYL, ARALKYL, AND ALKARYL RADICALS, AND CONTAINING AN AVERAGE OF FROM 1.95 TO 2.0 HYDROCARBON GROUPS PER SILICON ATOM AND (2) TERTIARY BUTYL PERBENZOATE PRESENT, BY WEIGHT, IN AN AMOUNT EQUAL TO FROM ABOUT 0.25 TO 6 PER CENT OF THE WEIGHT OF (1).
References Cited (Backward Citations)
US2392713A
Cited
US2420911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |