US2746836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of dyeing acrylonitrile fibers
Assignee: Monsanto Chemicals Ltd
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Filing: 1951-08-31
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Granted: 1956-05-22
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Expires: 1971-08-31
Abstract
No abstract record available.
Inventors
- 👤 Elmer H Rossin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:04
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/655; D06P1/6556; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A DYEING PROCESS WHICH COMPRISES IMMERSING TEXTILE MATERIALS COMPOSED OF AT LEAST 10% BY WEIGHT OF A FIBERFORMING HYDROPHOBIC HETEROPOLYMER CONTAINING AT LEAST 60% BY WEIGHT OF ACRYLONITRILE CONTAINING AT LEAST BY WEIGHT OF A COMPOUND COPOLYMERIZABLE THEREWITH HAVING THE GROUPING CH2=<, AND CONTAINING A WATERSOLUBLE BENZYL TRIS (DIALKYLAMINO) PHOSPHONIUM HALIDE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
55 words
A DYEING PROCESS WHICH COMPRISES IMMERSING TEXTILE MATERIALS COMPOSED OF AT LEAST 10% BY WEIGHT OF A FIBERFORMING HYDROPHOBIC HETEROPOLYMER CONTAINING AT LEAST 60% BY WEIGHT OF ACRYLONITRILE CONTAINING AT LEAST BY WEIGHT OF A COMPOUND COPOLYMERIZABLE THEREWITH HAVING THE GROUPING CH2=<, AND CONTAINING A WATERSOLUBLE BENZYL TRIS (DIALKYLAMINO) PHOSPHONIUM HALIDE 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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |