Patent US2733978A successfully refreshed from Google Patents.
US2733978A
Expired / Lapsed
US
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Solutions of acrylonitrile polymers in
Assignee: —
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Filing: —
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Granted: 1956-02-07
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Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:29
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/095; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/109; D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38; C08J2351/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A COMPOSITION COMPRISING AN ACRYLONITRILE POLYMER CONTAINING A MAJOR AMOUNT OF ACRYLONITRILE, PROPYLENE CARBONATE AND WATER, WHEREIN THE WEIGHT OF PROPYLENE CARBONATE IS GREATER THAN THAT OF THE WATER AND THE AMOUNT OF WATER IS BETWEEN ABOUT 14% AND 40% BY WEIGHT OF THE TOTAL AMOUNT OF PROPYLENE CARBONATE AND WATER.
Claim 2
Dependent Claim
51 words
A COMPOSITION COMPRISING AN ACRYLONITRILE POLYMER CONTAINING A MAJOR AMOUNT OF ACRYLONITRILE, PROPYLENE CARBONATE AND WATER, WHEREIN THE WEIGHT OF PROPYLENE CARBONATE IS GREATER THAN THAT OF THE WATER AND THE AMOUNT OF WATER IS BETWEEN ABOUT 14% AND 40% BY WEIGHT OF THE TOTAL AMOUNT OF PROPYLENE CARBONATE AND WATER.
References Cited (Backward Citations)
US2601253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |