US3108985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polysiloxane polymer with a calcined volatile-free filler
Assignee: Dow Silicones Corp
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Filing: 1960-11-02
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Granted: 1963-10-29
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Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 Donald E Weyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:31
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A HEAT CURABLE COMPOSITION CONSISTING ESSENTIALLY OF (1) FROM 5 TO 30% BY WEIGHT OF A PHENYL LOWER ALKYL SILOXANE RESIN HAVING AN AVERAGE OF FROM .9 TO 1.5 TOTAL PHENYL AND LOWER ALIPHATIC HYDROCARBON RADICALS PER SILICON ATOM, (2) FROM 70% TO 95% BY WEIGHT OF A VOLATILEFREE FILLER WHICH IS FREE OF WATER, CARBONATES AND ORGANIC MATERIALS, SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM SILICATE, ALUMINUM SILICATE, LITHIUM ALUMINUM SILICATE, MAGNESIUM OXIDE, SILICA, ALUMINA, ZINC OXIDE, ZIRCONIUM SILICATE, SILICON CARBIDE AND THORIUM OXIDE, AND (3) A CURING CATALYST FOR THE SILOXANE RESIN.
Claim 2
Dependent Claim
94 words
A HEAT CURABLE COMPOSITION CONSISTING ESSENTIALLY OF (1) FROM 5 TO 30% BY WEIGHT OF A PHENYL LOWER ALKYL SILOXANE RESIN HAVING AN AVERAGE OF FROM .9 TO 1.5 TOTAL PHENYL AND LOWER ALIPHATIC HYDROCARBON RADICALS PER SILICON ATOM, (2) FROM 70% TO 95% BY WEIGHT OF A VOLATILEFREE FILLER WHICH IS FREE OF WATER, CARBONATES AND ORGANIC MATERIALS, SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM SILICATE, ALUMINUM SILICATE, LITHIUM ALUMINUM SILICATE, MAGNESIUM OXIDE, SILICA, ALUMINA, ZINC OXIDE, ZIRCONIUM SILICATE, SILICON CARBIDE AND THORIUM OXIDE, AND (3) A CURING CATALYST FOR THE SILOXANE RESIN.
References Cited (Backward Citations)
US2615006A
Cited
GB805807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |