US2496267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solution of acrylonitrile polymers
Assignee: Akzo Nobel UK PLC
•
Filing: 1948-04-05
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Granted: 1950-02-07
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Expires: 1968-04-05
Abstract
No abstract record available.
Inventors
- 👤 David W Chaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:14
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
35 words
AS A NEW COMPOSITION OF MATTER, A COPOLYMER OF ACRYLONITRILE AND VINYL ACETATE CONTAINING IN THE POLYMER MOLECULE FROM 65 TO 80 MOL PER CENT OF ACRYLONITRILE AND THE BALANCE VINYL ACETATE, DISSOLVED IN ACETONITRILE.
Claim 2
Dependent Claim
35 words
AS A NEW COMPOSITION OF MATTER, A COPOLYMER OF ACRYLONITRILE AND VINYL ACETATE CONTAINING IN THE POLYMER MOLECULE FROM 65 TO 80 MOL PER CENT OF ACRYLONITRILE AND THE BALANCE VINYL ACETATE, DISSOLVED IN ACETONITRILE.
References Cited (Backward Citations)
US2404726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |