Patent US2631989A successfully refreshed from Google Patents.
US2631989A
Expired / Lapsed
US
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Compositions comprising an acrylonitrile polymerization product and a dioxanone
Assignee: Wyeth Holdings LLC
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Filing: 1952-02-08
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Granted: 1953-03-17
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Expires: 1972-02-08
Abstract
No abstract record available.
Inventors
- 👤 John J Padbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A COMPOSITION OF MATTER COMPRISING (1) A POLYMERIZATION PRODUCT CONTAINING IN THE POLYMER MOLECULES AN AVERAGE OF AT LEAST 80% BY WEIGHT OF COMBINED ACRYLONITRILE AND (2) 2-P-DIOXANONE.
Claim 2
Dependent Claim
28 words
A COMPOSITION OF MATTER COMPRISING (1) A POLYMERIZATION PRODUCT CONTAINING IN THE POLYMER MOLECULES AN AVERAGE OF AT LEAST 80% BY WEIGHT OF COMBINED ACRYLONITRILE AND (2) 2-P-DIOXANONE.
References Cited (Backward Citations)
No citation records indexed.
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 |