Patent US4119528A successfully refreshed from Google Patents.
Patent US2716093A successfully refreshed from Google Patents.
US2716093A
Expired / Lapsed
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Acrylonitrile polymer solutions and process of shaping the same
Assignee: EIDP Inc
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Filing: 1951-06-12
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Granted: 1955-08-23
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Expires: 1971-06-12
Abstract
No abstract record available.
Inventors
- 👤 William R Mcclellan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:34
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
AN AQUEOUS SOLUTION CONTAINING FROM 8 TO 25%, BY WEIGHT THEREOF, OF AN ACRYLONITRILE POLYMER OF AT LEAST 85% ACRYLONITRILE CONTENT, SAID SOLUTION COMPRISING FROM 32 TO 50%, BY WEIGHT OF THE SOLUTION, OF A SALT, A CONCENTRATED AQUEOUS SOLUTION OF WHICH IS A SOLVENT FOR THE ACRYLONITRILC POLYMER, WHICH POLYMER IS DISSOLVED IN AMOUNT FROM 8 TO 25% BY WEIGHT OF THE SOLUTION AND FROM 25 TO 100% BY WEIGHT OF THE SALT, FROM 15 TO 35%, BY WEIGHT OF THE SOLUTION, OF A NEUTRAL ORGANIC OXY COMPOUND LIQUID AT 25* C. AND MISCIBLE AT 25* C. WITH WATER IN ALL PROPORTIONS, CONTAINING ONLY OXYGEN, HYDROGEN, AND NOT MORE THAN SIX CARBONS WITH FROM ONE TO THREE CARBONS PER OXYGEN, AND FROM 5 TO 35%, BY WEIGHT OF THE SOLUTION, OF WATER,
Claim 2
Dependent Claim
133 words
AN AQUEOUS SOLUTION CONTAINING FROM 8 TO 25%, BY WEIGHT THEREOF, OF AN ACRYLONITRILE POLYMER OF AT LEAST 85% ACRYLONITRILE CONTENT, SAID SOLUTION COMPRISING FROM 32 TO 50%, BY WEIGHT OF THE SOLUTION, OF A SALT, A CONCENTRATED AQUEOUS SOLUTION OF WHICH IS A SOLVENT FOR THE ACRYLONITRILC POLYMER, WHICH POLYMER IS DISSOLVED IN AMOUNT FROM 8 TO 25% BY WEIGHT OF THE SOLUTION AND FROM 25 TO 100% BY WEIGHT OF THE SALT, FROM 15 TO 35%, BY WEIGHT OF THE SOLUTION, OF A NEUTRAL ORGANIC OXY COMPOUND LIQUID AT 25* C. AND MISCIBLE AT 25* C. WITH WATER IN ALL PROPORTIONS, CONTAINING ONLY OXYGEN, HYDROGEN, AND NOT MORE THAN SIX CARBONS WITH FROM ONE TO THREE CARBONS PER OXYGEN, AND FROM 5 TO 35%, BY WEIGHT OF THE SOLUTION, OF WATER,
References Cited (Backward Citations)
US2425192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |