US2656328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile polymer solutions and articles formed therefrom
Assignee: Eastman Kodak Co
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Filing: 1951-05-18
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Granted: 1953-10-20
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Expires: 1971-05-18
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:52
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
32 words
AS A NEW COMPOSITION OF MATTER A POLYMER OF ACRYLONITRILE, CONTAINING IN THE POLYMER MOLECULE LESS THAN ABOUT 90% BY WEIGHT OF ACRYLONITRILE, PLASTICIZED WITH A WATER-INSOLUBLE COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
32 words
AS A NEW COMPOSITION OF MATTER A POLYMER OF ACRYLONITRILE, CONTAINING IN THE POLYMER MOLECULE LESS THAN ABOUT 90% BY WEIGHT OF ACRYLONITRILE, PLASTICIZED WITH A WATER-INSOLUBLE COMPOUND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2404714A
Cited
US2558793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |