Patent US2436926A successfully refreshed from Google Patents.
US2436926A
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Polymerization of acrylic acid nitriles
Assignee: EIDP Inc
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Filing: 1943-08-02
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Granted: 1948-03-02
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Expires: 1963-08-02
Abstract
No abstract record available.
Inventors
- 👤 Jacobson Ralph Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:26
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F2/00; C08F2/12; C08F2/16; C08F20/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2097263A
Cited
US2326078A
Cited
US2289540A
Cited
US2326326A
Cited
US2356767A
Cited
US2333635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |