Patent US2586238A successfully refreshed from Google Patents.
US2586238A
Expired / Lapsed
US
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Copolymers of acrylonitrile and amine oxides
Assignee: Solutia Inc
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Filing: 1950-06-30
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Granted: 1952-02-19
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Expires: 1970-06-30
Abstract
No abstract record available.
Inventors
- 👤 Marion R Lytton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:34
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
38 words
A COPOLYMER CONTAINING, BY WEIGHT IN THE COPOLYMER MOLECULE, FROM 1 TO 99 PERCENT OF ACRYLONITRILE AND FROM 99 TO 1 PERCENT OF AN AMINE OXIDE SELECTED FROM THE GROUP CONSISTING OF AMINE OXIDES HAVING THE GENERAL FORMULA
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) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |