Patent US2850479A successfully refreshed from Google Patents.
US2850479A
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Process of preparing an acrylonitrile graft interpolymer
Assignee: Solutia Inc
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Filing: 1955-08-08
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Granted: 1958-09-02
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Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 David B Capps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:19
CPC Classifications
C; C08; C08F; C08F271/00; C08F20/00; C08F20/02; C08F20/08; C08F265/00; C08F265/02; C08F271/02; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A PROCESS FOR PREPARING AN ACRYLONITRILE GRAFT INTERPOLYMER WHICH COMPRISES REACTING IN AQUEOUS SOLUTION A MONOMERIC COMPOSITION CONPRISING OF FROM 25 TO 75 PERCENT BY WEIGHT OF A VINYLPYRIDINE HAVING THE FORMULA,
Claim 2
Dependent Claim
32 words
A PROCESS FOR PREPARING AN ACRYLONITRILE GRAFT INTERPOLYMER WHICH COMPRISES REACTING IN AQUEOUS SOLUTION A MONOMERIC COMPOSITION CONPRISING OF FROM 25 TO 75 PERCENT BY WEIGHT OF A VINYLPYRIDINE HAVING THE FORMULA,
References Cited (Backward Citations)
US2613194A
Cited
US2620324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |