Patent US2797397A successfully refreshed from Google Patents.
US2631995A
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Acrylonitrile polymers
Assignee: Industrial Rayon Corp
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Filing: 1949-12-15
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Granted: 1953-03-17
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Expires: 1969-12-15
Abstract
No abstract record available.
Inventors
- 👤 Herman A Bruson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:38
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
AS A NEW COMPOSITION OF MATTER,A COPOLYMER DERIVED BY THE POLYMERIZATION OF A MIXTURE COMPRISING ACRYLONITRILE AND AN ETHER COMPOUND SELECTED FROM THE GROUP CONSISTING OF A MONOALLYLIC ETHER OF A SATURATED AMINO ALCOHOL, A WATER-SOLUBLE SALT OF SAID ALLYLIC ETHER FORMED WITH AN ACID, A WATER-SOLUBLE QUATERNARY AMMONMIUM SALT OF SAID ALLYLIC ETHER; SAID ALLYLIC ETHER HAVING THE FORMULA
Claim 2
Dependent Claim
60 words
AS A NEW COMPOSITION OF MATTER,A COPOLYMER DERIVED BY THE POLYMERIZATION OF A MIXTURE COMPRISING ACRYLONITRILE AND AN ETHER COMPOUND SELECTED FROM THE GROUP CONSISTING OF A MONOALLYLIC ETHER OF A SATURATED AMINO ALCOHOL, A WATER-SOLUBLE SALT OF SAID ALLYLIC ETHER FORMED WITH AN ACID, A WATER-SOLUBLE QUATERNARY AMMONMIUM SALT OF SAID ALLYLIC ETHER; SAID ALLYLIC ETHER HAVING THE FORMULA
References Cited (Backward Citations)
US2098108A
Cited
US2487859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |