Patent US2562953A successfully refreshed from Google Patents.
US2562953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organo-silicon copolymers and process of making same
Assignee: Ellis Foster Co
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Filing: 1947-03-06
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Granted: 1951-08-07
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Expires: 1967-03-06
Abstract
No abstract record available.
Inventors
- 👤 John B Rust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:10
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE METHOD OF PRODUCING A COPOLYMER WHICH COMPRISES HEATING TOGETHER SEPARATELY HYDROLYZED PRODUCTS INCLUDING (1) A SOLUTION OBTAINED BY INCOMPLETELY HYDROLYZING A MONOVALENT HYDROCARBON ORTHOSILICATE WITH UP TO 2 MOLES OF WATER AND AN ORGANIC LIQUID SOLVENT IN AMOUNT TO GIVE CLEAR SOLUTION, AND (2) A HALOGEN-HYDROLZED, MONVALENT HYDROCARBON SILICON TRIHALIDE IN WHICH THE HALOGEN IS COMPLETELY HYDROLYZED, IN THE MOLAR RATIO OF SAID PRODUCTS TO ONE ANOTHER OF 10:1 TO 1:10 TO FORM A GEL.
Claim 2
Independent Claim
76 words
THE METHOD OF PRODUCING A COPOLYMER WHICH COMPRISES HEATING TOGETHER SEPARATELY HYDROLYZED PRODUCTS INCLUDING (1) A SOLUTION OBTAINED BY INCOMPLETELY HYDROLYZING A MONOVALENT HYDROCARBON ORTHOSILICATE WITH UP TO 2 MOLES OF WATER AND AN ORGANIC LIQUID SOLVENT IN AMOUNT TO GIVE CLEAR SOLUTION, AND (2) A HALOGEN-HYDROLZED, MONVALENT HYDROCARBON SILICON TRIHALIDE IN WHICH THE HALOGEN IS COMPLETELY HYDROLYZED, IN THE MOLAR RATIO OF SAID PRODUCTS TO ONE ANOTHER OF 10:1 TO 1:10 TO FORM A GEL.
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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) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |