Patent US2520150A successfully refreshed from Google Patents.
US2520150A
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Compositions comprising an acrylonitrile polymerization product and an oxo-oxazolidine
Assignee: Wyeth Holdings LLC
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Filing: 1949-03-31
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Granted: 1950-08-29
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Expires: 1969-03-31
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
- 👤 Walter M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:08
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/096; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A COMPOSITION OF MATTER COMPRISING (1) A POLYMERIZATION PRODUCT CONTAINING IN THE POLYMER MOLECULES AN AVERAGE OF AT LEAST 85% BY WEIGHT OF ACRYLONITRILE AND (2) 5-CHLOROMETHYL-2-OXOOXAZOLIDINE.
Claim 2
Dependent Claim
27 words
A COMPOSITION OF MATTER COMPRISING (1) A POLYMERIZATION PRODUCT CONTAINING IN THE POLYMER MOLECULES AN AVERAGE OF AT LEAST 85% BY WEIGHT OF ACRYLONITRILE AND (2) 5-CHLOROMETHYL-2-OXOOXAZOLIDINE.
References Cited (Backward Citations)
US2463829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |