Patent US2420692A successfully refreshed from Google Patents.
Patent US2657197A successfully refreshed from Google Patents.
US2657197A
Expired / Lapsed
US
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Copolymers of vinylidene cyanide with unsaturated aliphatic carboxylic acids
Assignee: Goodrich Corp
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Filing: 1952-06-11
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Granted: 1953-10-27
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Expires: 1972-06-11
Abstract
No abstract record available.
Inventors
- 👤 Earl J Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:13
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/36; C08F22/00; C08F22/30; C08F22/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A COPOLYMER OF MONOMERS CONSISTING OF VINYLIDENE CYANIDE AND OLEFINICALLY-UNSATURATED ALIPHATIC CARBOXYLIC ACID CTAINING AT LEAST ONE ACTIVATED OLEFINIC CARBON-TO-CARBON DOUBLE BOND, THE VINYLIDENE CYANIDE UNITS IN SAID COPOLYMER BEING DERIVED FROM MONOMERIC VINYLIDENE CYANIDE WHICH IS A CRYSTALLINE SOLID AT 0* C., HAVING A MELTING POINT WHEN IN PUREST FORM OF SUBSTANTIALLY 9.0* C. TO 9.7* C. AND BEING CHARACTERIXED CHEMICALLY BY THE ABILITY TO UNDERGO ON CONTACT WITH WATER AT ROOM TEMPEATURE AN INSTANTANEOUS HOMOPOLYMERIZATION REACTION TO GIVE A SOLID WATER-INSOLUBLE RESIN.
Claim 2
Dependent Claim
84 words
A COPOLYMER OF MONOMERS CONSISTING OF VINYLIDENE CYANIDE AND OLEFINICALLY-UNSATURATED ALIPHATIC CARBOXYLIC ACID CTAINING AT LEAST ONE ACTIVATED OLEFINIC CARBON-TO-CARBON DOUBLE BOND, THE VINYLIDENE CYANIDE UNITS IN SAID COPOLYMER BEING DERIVED FROM MONOMERIC VINYLIDENE CYANIDE WHICH IS A CRYSTALLINE SOLID AT 0* C., HAVING A MELTING POINT WHEN IN PUREST FORM OF SUBSTANTIALLY 9.0* C. TO 9.7* C. AND BEING CHARACTERIXED CHEMICALLY BY THE ABILITY TO UNDERGO ON CONTACT WITH WATER AT ROOM TEMPEATURE AN INSTANTANEOUS HOMOPOLYMERIZATION REACTION TO GIVE A SOLID WATER-INSOLUBLE RESIN.
References Cited (Backward Citations)
US2466395A
Cited
US2615871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |