Patent JPS5318653A successfully refreshed from Google Patents.
US3752647A
Expired / Lapsed
US
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Water swollen cellulose and blends dyed with insoluble, non-vattable anthraquinone dyes in a glycol ether solution
Assignee: EIDP Inc
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Filing: 1971-07-30
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Granted: 1973-08-14
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Expires: 1991-07-30
Abstract
Abstract WATER SWELLABLE CELLULOSIC FIBERS, FOR EXAMPLE, COTTON, OR BLENDS OR MIXTURES THEREOF WITH SYNTHETIC FIBERS, FOR EXAMPLE, POLYESTER FIBERS, UNIFORMLY DYED TO BLUE SHADES WITH ESSENTAILLY WATER INSOLUBLE N,N''N"-SUBSTITUTED-1,4,5(OR 8-)-TRIAMINOANTHRAQUINONE DYES, FOR EXAMPLE, 1-BENZAMIDO-4,5-BIS(P-TOLUIDINO)ANTHRAQUINONE, SAID DYED FIBERS BEING FAST TO LIGHT, WASHING DRYCLEANING, CROCKING AND SUBLIMATION.
Inventors
- 👤 R Mentzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:12
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/36; C09B1/473; C09B1/40; C09B1/42; D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/6033; D06P3/6041; Y; Y10; Y10S; Y10S8/00; Y10S8/907; Y10S8/908; Y10S8/92; Y10S8/922
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |