US2902468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of polymerizing hydroxylated siloxanes
Assignee: Dow Silicones Corp
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Filing: 1958-06-02
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Granted: 1959-09-01
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Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Fianu Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/175; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/08; C08G77/42; C08G77/44; C08K5/34; C08K5/3412
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF POLYMERIZING HYDROXYL-CONTAINING ORGANOSILICON COMPOUNDS WHICH COMPRISES CONTACTING (1) AN ORGANOSILICON COMPOUND HAVING AN AVERAGE OF FROM 1 TO 3 INCLUSIVE SUBSTITUENT GROUPS SELECTED FROM THE GOUPR CONSISTING OF HYDROGEN, MOVALENT HYDROCARBON RADICALS AND MONOVALENT HALOGENATED HYDROCARBON RADICALS, PER SILICON ATOM, AND AT LEAST ONE SIOH GROUP PER MOLECULE, ANY REMAINING VALENCES OF SAID ORGANOSILICON COMPOUND BEING SATISFIED WITH OXYGEN ATOMS AND (2) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULA
Claim 2
Independent Claim
77 words
A METHOD OF POLYMERIZING HYDROXYL-CONTAINING ORGANOSILICON COMPOUNDS WHICH COMPRISES CONTACTING (1) AN ORGANOSILICON COMPOUND HAVING AN AVERAGE OF FROM 1 TO 3 INCLUSIVE SUBSTITUENT GROUPS SELECTED FROM THE GOUPR CONSISTING OF HYDROGEN, MOVALENT HYDROCARBON RADICALS AND MONOVALENT HALOGENATED HYDROCARBON RADICALS, PER SILICON ATOM, AND AT LEAST ONE SIOH GROUP PER MOLECULE, ANY REMAINING VALENCES OF SAID ORGANOSILICON COMPOUND BEING SATISFIED WITH OXYGEN ATOMS AND (2) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULA
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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |