Patent US3707348A successfully refreshed from Google Patents.
US3707348A
Expired / Lapsed
US
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Cellulose dyed while water swollen in a glycol bath with anthrapyrimidine dye
Assignee: Crompton and Knowles Corp
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Filing: 1971-06-28
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Granted: 1972-12-26
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Expires: 1991-06-28
Abstract
Abstract WATER SWELLABLE CELLULOSIC FIBERS, FOR EXAMPLE, COTTON, OR BLENDS OR MIXTURES THEREOF WITH SYNTHETIC FIBERS, FOR EXAMPLE, POLYESTER FIBERS, UNIFORMLY DYED IN ORANGE TO VIOLET SHADES WITH ESSENTIALLY WATER INSOLUBLE, NON-VATTABLE, ANTHRAPYRIMIDINE DYES, FOR EXAMPLE, 2-PHENYL-4BROMO-6-(P-TOLUIDINO) ANTHRAPYRIMIDINE, SAID DYED FIBERS HAVING EXCELLENT FASTNESS TO LIGHT, WASHING, DRYCLEANING AND SUBLIMATION AND EXHIBITING A REFLECTANCE COLOR VALUE (S'') AFTER SCOUR OF AT LEAST ABOUT 0.4.
Inventors
- 👤 John Blackwell
- 👤 Edward Sherlock Wilks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:32
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/6033; D06P3/6041; C; C09; C09B; C09B5/00; C09B5/02; C09B5/16; D06P1/00; D06P1/90; D06P1/92; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |