Patent US2688010A successfully refreshed from Google Patents.
US2688010A
Expired / Lapsed
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Polymers of acrylonitrile and nu-substituted amides
Assignee: Solutia Inc
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Filing: 1952-02-25
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Granted: 1954-08-31
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Expires: 1972-02-25
Abstract
No abstract record available.
Inventors
- 👤 David W Chaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:23
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A COPOLYMER CONTAINING, BY WEIGHT IN THE POLYMER MOLECULE, AT LEAST 80% OF ACRYLONITRILE AND AT LEAST 1% OF N-VINYL-N-METHYL-N'',N''-DIMETHYLUREA.
Claim 2
Dependent Claim
20 words
A COPOLYMER CONTAINING, BY WEIGHT IN THE POLYMER MOLECULE, AT LEAST 80% OF ACRYLONITRILE AND AT LEAST 1% OF N-VINYL-N-METHYL-N'',N''-DIMETHYLUREA.
References Cited (Backward Citations)
US2544638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |