Patent US2662877A successfully refreshed from Google Patents.
US2662877A
Expired / Lapsed
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Copolymers of acrylonitrile and allyl amines
Assignee: Solutia Inc
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Filing: 1950-06-27
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Granted: 1953-12-15
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Expires: 1970-06-27
Abstract
No abstract record available.
Inventors
- 👤 David W Chaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:30
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COPOLYMER CONTAINING, BY WEIGHT IN THE COPOLYMER MOLECULE, AT LEAST 80 PERCENT OF ACRYLONITRILE, AND AT LEAST 1 PERCENT OF N,N-DIMETHYLALLYLAMINE.
Claim 2
Dependent Claim
22 words
A COPOLYMER CONTAINING, BY WEIGHT IN THE COPOLYMER MOLECULE, AT LEAST 80 PERCENT OF ACRYLONITRILE, AND AT LEAST 1 PERCENT OF N,N-DIMETHYLALLYLAMINE.
References Cited (Backward Citations)
US2172822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |