Patent US2442543A successfully refreshed from Google Patents.
US3149089A
Expired / Lapsed
US
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Preparation of acrylonitrile fibers
Assignee: EIDP Inc
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Filing: 1959-08-27
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Granted: 1964-09-15
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Expires: 1979-08-27
Abstract
No abstract record available.
Inventors
- 👤 Anson M Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:38
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
AS A NEW COMPOSITION OF MATTER A HOMOGENEOUS SPINNING SOLUTION COMPRISING ACRYLONITRILE POLYMER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF ACRYLONITRILE AND COPOLYMERS CONTAINING AT LEAST 70% ACRYLONITRILE AND UP TO 30% BY WEIGHT OF AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZED THEREWITH, AN INERT SOLVENT FOR SAID POLYMER, AND FROM ABOUT 3% TO ABOUT 20% BASED ON THE WEIGHT OF SAID POLYMER OF A HALOALKYL PHOSPATE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
70 words
AS A NEW COMPOSITION OF MATTER A HOMOGENEOUS SPINNING SOLUTION COMPRISING ACRYLONITRILE POLYMER SELECTED FROM THE GROUP CONSISTING OF HOMOPOLYMERS OF ACRYLONITRILE AND COPOLYMERS CONTAINING AT LEAST 70% ACRYLONITRILE AND UP TO 30% BY WEIGHT OF AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZED THEREWITH, AN INERT SOLVENT FOR SAID POLYMER, AND FROM ABOUT 3% TO ABOUT 20% BASED ON THE WEIGHT OF SAID POLYMER OF A HALOALKYL PHOSPATE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |