Patent US2603620A successfully refreshed from Google Patents.
US2603620A
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Production of solutions of acrylonitrile copolymers and textiles made therefrom
Assignee: Union Carbide Corp
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Filing: 1950-05-18
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Granted: 1952-07-15
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Expires: 1970-05-18
Abstract
No abstract record available.
Inventors
- 👤 Andrew T Walter
- 👤 George H Fremon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:35
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/096; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; D; D01; D01F; D01F6/00; D01F6/28; D01F6/38; D01F6/40; C08J2333/00; C08J2333/18; C08J2333/20; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A HOMOGENEOUS SOLUTION COMPRISING A COPOLYMER OF ACRYLONITRILE AND VINYL CHLORIDE DISSOLVED IN ACETONITRILE, SAID COPOLYMER CONTAINING BETWEEN AROUND 30% AROUND 75% OF THE ACRYLONITRILE.
Claim 2
Dependent Claim
25 words
A HOMOGENEOUS SOLUTION COMPRISING A COPOLYMER OF ACRYLONITRILE AND VINYL CHLORIDE DISSOLVED IN ACETONITRILE, SAID COPOLYMER CONTAINING BETWEEN AROUND 30% AROUND 75% OF THE ACRYLONITRILE.
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) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |