Patent US2739638A successfully refreshed from Google Patents.
US2739638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous silicon-containing compositions and products produced therewith
Assignee: Westinghouse Electric Corp
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Filing: 1954-07-06
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Granted: 1956-03-27
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Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Daniel W Lewis
- 👤 Harold M Philofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:01
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; C; C08; C08F; C08F30/00; C08F30/04; C08F30/08; C08G; C08G77/00; C08G77/48; C08G77/50; C08G77/52; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/251
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A POLYMERIZABLE RESINOUS COMPOSITION COMPRISING THE PRODUCT OBTAINED BY HYDROLYZING A MIXTURE OF MONOMERS, ONE OF WHICH IS (1) AN ORGANOSILICON MONOMER HAVING A PHENYLENE GROUP BONDED DIRECTLY TO TWO SILICON ATOMS, EACH OF THE SILICON ATOMS HAVING TWO MONOVALENT SATURATED HYDROCARBON RADICALS AND ONE MONOVALENT HYDROLYZABLE GROUP ATTACHED DIRECTLY THERETO, AND ANOTHER OF WHICH IS (2) AN ORGANOSILICON MONOMER HAVING A MONOVALENT OLEFINICALLY UNSATURATED HYDROCARBON RADICAL, TWO MONOVALENT HYDROLYZABLE GROUPS AND A MONOVALENT SATURATED HYDROCARBON RADICAL ATTACHED DIRECTLY TO A SILICON ATOM.
Claim 2
Dependent Claim
83 words
A POLYMERIZABLE RESINOUS COMPOSITION COMPRISING THE PRODUCT OBTAINED BY HYDROLYZING A MIXTURE OF MONOMERS, ONE OF WHICH IS (1) AN ORGANOSILICON MONOMER HAVING A PHENYLENE GROUP BONDED DIRECTLY TO TWO SILICON ATOMS, EACH OF THE SILICON ATOMS HAVING TWO MONOVALENT SATURATED HYDROCARBON RADICALS AND ONE MONOVALENT HYDROLYZABLE GROUP ATTACHED DIRECTLY THERETO, AND ANOTHER OF WHICH IS (2) AN ORGANOSILICON MONOMER HAVING A MONOVALENT OLEFINICALLY UNSATURATED HYDROCARBON RADICAL, TWO MONOVALENT HYDROLYZABLE GROUPS AND A MONOVALENT SATURATED HYDROCARBON RADICAL ATTACHED DIRECTLY TO A SILICON ATOM.
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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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |