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US3772239A
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Silicone rubber composition yielding a structural ash on combustion
Assignee: Wacker Chemical Corp
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Filing: 1972-05-25
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Granted: 1973-11-13
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Expires: 1992-05-25
Abstract
Abstract A SILICONE RUBBER FORMULATION INCORPORATING SODIUM METASILICATE AND AN INORGANIC COMPOUND, PREFERABLY NICKELOUS OXIDE, HAVING A MELTING PONT EXCEEDING THAT OF SODIUM METASILICATE. ON CATALYTIC VULCANIZATION OF THE FORMULATION, A RUBBER-LIKE COMPOSITION RESULTS WHICH ON COMBUSTION YIELDS A COHESIVE, RIGID CERAMIC MATERIAL.
Inventors
- 👤 Bruns C Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:29
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |