Patent US3307900A successfully refreshed from Google Patents.
US3307900A
Expired / Lapsed
US
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Process for dyeing acrylonitrile polymer fibers and their products
Assignee: Japan Exlan Co Ltd
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Filing: 1963-12-02
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Granted: 1967-03-07
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Nakanome Ishihiko
- 👤 Ohkubo Tomoji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:28
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; D06P1/90; D06P1/92; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD FOR DYEING A SHAPED ARTICLE COMPRISING AN ACRYLONITRILE POLYMERD WHICH COMPRISES PADDING THE ARTICLE WITH A PADDING LIQUOR CONTAINING (1) DYESTUFF SELECTED FROM THE GROUP CONSISTING OF CATIONIC DYESTUFFS, ACIDIC DYESTUFFS AND METAL-CONTAINING DYESTUFFS, (2) CRESOL SELECTED FROM THE GROUP CONSISTING OF M-CRESOL, O-CRESOL AND PCRESOL AND (3) AT LEAST TWICE BY WEIGHT BASED ON THE CRESOL OF ALIPHATIC POLYHYDRIC ALCOHOL HAVING NOT MORE THAN 6 CARBON ATOMS, AND THEN TREATING THE WET PADDED ARTICLE WITH STEAM.
Claim 2
Independent Claim
79 words
A METHOD FOR DYEING A SHAPED ARTICLE COMPRISING AN ACRYLONITRILE POLYMERD WHICH COMPRISES PADDING THE ARTICLE WITH A PADDING LIQUOR CONTAINING (1) DYESTUFF SELECTED FROM THE GROUP CONSISTING OF CATIONIC DYESTUFFS, ACIDIC DYESTUFFS AND METAL-CONTAINING DYESTUFFS, (2) CRESOL SELECTED FROM THE GROUP CONSISTING OF M-CRESOL, O-CRESOL AND PCRESOL AND (3) AT LEAST TWICE BY WEIGHT BASED ON THE CRESOL OF ALIPHATIC POLYHYDRIC ALCOHOL HAVING NOT MORE THAN 6 CARBON ATOMS, AND THEN TREATING THE WET PADDED ARTICLE WITH STEAM.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |