US3274153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of polymerizing hydroxylated organosilicon compounds
Assignee: Dow Silicones Corp
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Filing: 1962-05-02
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Granted: 1966-09-20
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Expires: 1982-05-02
Abstract
No abstract record available.
Inventors
- 👤 Hyde James Franklin
- 👤 Elmer M Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:57
CPC Classifications
C; C08; C08G; C08G77/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
A METHOD OF POLYMERIZING ORGANOSILICON COMPOUNDS CONTAINING SILICON-BONDED HYDROXYL RADICALS WHICH METHOD COMPRISES CONTACTING (1) AN ORGANOSILICON COMPOUND HAVING AN AVERAGE PER SILICON ATOM OF 1.98 TO 2.01 INCLUSIVE SUBSTITUTE GROUPS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS, PERFLUOROALKYLETHYL RADICALS, HALORAYL RADICALS AND CYANOALKYL RADICALS, AND AN AVERAGE PER MOLECULE OF TWO SIOH GROUPS, ANY REMAINING VALENCES OF SAID ORGANOSILICON COMPOUND BEING SATISFIED WITH SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF DIVALENT OXYGEN ATOMS, DIVALENT HYDROCARBON RADICALS AND DIVALENT HALOARYLENE RADICALS, WITH (2) A COMPOUND OF THE STRUCTURE
Claim 2
Independent Claim
90 words
A METHOD OF POLYMERIZING ORGANOSILICON COMPOUNDS CONTAINING SILICON-BONDED HYDROXYL RADICALS WHICH METHOD COMPRISES CONTACTING (1) AN ORGANOSILICON COMPOUND HAVING AN AVERAGE PER SILICON ATOM OF 1.98 TO 2.01 INCLUSIVE SUBSTITUTE GROUPS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS, PERFLUOROALKYLETHYL RADICALS, HALORAYL RADICALS AND CYANOALKYL RADICALS, AND AN AVERAGE PER MOLECULE OF TWO SIOH GROUPS, ANY REMAINING VALENCES OF SAID ORGANOSILICON COMPOUND BEING SATISFIED WITH SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF DIVALENT OXYGEN ATOMS, DIVALENT HYDROCARBON RADICALS AND DIVALENT HALOARYLENE RADICALS, WITH (2) A COMPOUND OF THE STRUCTURE
Claim 3
Independent Claim
90 words
A METHOD OF POLYMERIZING ORGANOSILICON COMPOUNDS CONTAINING SILICON-BONDED HYDROXYL RADICALS WHICH METHOD COMPRISES CONTACTING (1) AN ORGANOSILICON COMPOUND HAVING AN AVERAGE PER SILICON ATOM OF 1.98 TO 2.01 INCLUSIVE SUBSTITUENT GROUPS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS, PERFLUOROALKYLETHYL RADICALS, HALOARYL RADICALS AND CYANOALKYL RADICALS, AND AN AVERAGE PER MOLECULE OF TWO SIOH GROUPS, ANY REMAINING VALENCES OF SAID ORGANOSILICON COMPOUND BEING SATISFIED WITH SUBSTITUTENTS SELECTED FROM THE GROUP CONSISTING OF DIVALENT OXYGEN ATOMS, DIVALENT HYDROCARBON RADICALS AND DIVALENT HALOARYLENE RADICALS, WITH (2) A COMPOUND OF THE STRUCTURE
Claim 4
Independent Claim
90 words
A METHOD OF POLYMERIZING ORGANOSILICON COMPOUNDS CONTAINING SILICON-BONDED HYDROXYL RADICALS WHICH METHOD COMPRISES CONTACTING (1) AN ORGANOSILICON COMPOUND HAVING AN AVERAGE PER SILICON ATOM OF 1.98 TO 2.01 INCLUSIVE SUBSTITUENT GROUPS SELECTED FROM THE GROUP CONSISTING OF MONOVALENT HYDROCARBON RADICALS, PERFLUOROALKYLETHYL RADICALS, HALOARYL RADICALS AND CYANOALKYL RADICALS, AND AN AVERAGE PER MOLECULE OF TWO SIOH GROUPS, ANY REMAINING VALENCES OF SAID ORGANOSILICON COMPOUND BEING SATISFIED WITH SUBSTITUTENTS SELECTED FROM THE GROUP CONSISTING OF DIVALENT OXYGEN ATOMS, DIVALENT HYDROCARBON RADICALS AND DIVALENT HALOARYLENE RADICALS, WITH (2) A COMPOUND OF THE STRUCTURE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |