US2562953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organo-silicon copolymers and process of making same
Assignee: Ellis Foster Co
•
Filing: 1947-03-06
•
Granted: 1951-08-07
•
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 17:41
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.
References Cited (Backward Citations)
US2410346A
Cited
US2458944A
Cited
US2258218A
Cited
US2258220A
Cited
US2438478A
Cited
US2486162A
Cited
US2398672A
Cited
GB585626A
Cited
US2397727A
Cited
US2460457A
Cited
US2377689A
Cited
US2413582A
Cited
US2397895A
Cited
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 |