US2671072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dye-receptive acrylonitrile polymers
Assignee: Solutia Inc
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Filing: 1951-05-26
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Granted: 1954-03-02
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Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
- 👤 Alfred B Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:33
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A DYE-RECEPTIVE COPOLYMER WHICH COMPRISES A SALT PREPARED BY REACTING A COPOLYMER OF FROM 20 TO 98 PERCENT OF ACRYLONITRILE AND FROM 2 TO 80 PERCENT BY WEIGHT OF A COMPOUND OF THE GROUP CONSISTING OF ALPHA-CHLOROACRYLONITRILE, ALPHACHLOROACRYLAMIDE AND THE ALKYL ESTERS OF ALPHACHLOROACRYLIC ACID WHEREIN THE ALKYL RADICAL CONTAINS UP TO 4 CARBON ATOMS, WITH A REAGENT SELESTED FROM THE GROUP CONSISTING OF AMMONIA, AMINES, THIOUREAS, AND 2-MEREAPTOBENZOTHIAZOLE,
Claim 2
Dependent Claim
69 words
A DYE-RECEPTIVE COPOLYMER WHICH COMPRISES A SALT PREPARED BY REACTING A COPOLYMER OF FROM 20 TO 98 PERCENT OF ACRYLONITRILE AND FROM 2 TO 80 PERCENT BY WEIGHT OF A COMPOUND OF THE GROUP CONSISTING OF ALPHA-CHLOROACRYLONITRILE, ALPHACHLOROACRYLAMIDE AND THE ALKYL ESTERS OF ALPHACHLOROACRYLIC ACID WHEREIN THE ALKYL RADICAL CONTAINS UP TO 4 CARBON ATOMS, WITH A REAGENT SELESTED FROM THE GROUP CONSISTING OF AMMONIA, AMINES, THIOUREAS, AND 2-MEREAPTOBENZOTHIAZOLE,
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) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |