Patent US3133039A successfully refreshed from Google Patents.
US3133039A
Expired / Lapsed
US
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Acrylonitrile polymer compositions
Assignee: Dow Chemical Co
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Filing: 1957-11-25
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Granted: 1964-05-12
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Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Clyde W Davis
- 👤 Forrest A Ehlers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:26
CPC Classifications
C; C08; C08F; C08F28/00; C08L; C08L33/00; C08L33/18; C08L33/20; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
COMPOSITION COMPRISING A MAJOR PROPORTION OF AT LEAST ABOUT 80 WEIGHT PERCENT, BASED ON COMPOSITION WEIGHT, OF (1) A FIBER FORMING POLYMER THAT IS A POLYMER OF AN ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL CONTAINING AT LEAST ABOUT 80 WEIGHT PERCENT OF ACRYLONITRILE AND (2) A MINOR PROPORTION OF UP TO ABOUT 20 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE COMPOSITION, OF A COPOLYMER OF (A) FROM ABOUT 20 TO 80 MOLE PERCENT OF AN ALKYLENEBISACRYLAMIDE OF THE FORMULA:
Claim 2
Dependent Claim
79 words
COMPOSITION COMPRISING A MAJOR PROPORTION OF AT LEAST ABOUT 80 WEIGHT PERCENT, BASED ON COMPOSITION WEIGHT, OF (1) A FIBER FORMING POLYMER THAT IS A POLYMER OF AN ETHYLENICALLY UNSATURATED MONOMERIC MATERIAL CONTAINING AT LEAST ABOUT 80 WEIGHT PERCENT OF ACRYLONITRILE AND (2) A MINOR PROPORTION OF UP TO ABOUT 20 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE COMPOSITION, OF A COPOLYMER OF (A) FROM ABOUT 20 TO 80 MOLE PERCENT OF AN ALKYLENEBISACRYLAMIDE OF THE FORMULA:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |