US3667897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniformly dyed yellow to navy blue water swellable cellulosic fibers
Assignee: EIDP Inc
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Filing: 1969-11-25
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Granted: 1972-06-06
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Expires: 1989-11-25
Abstract
Abstract WATER SWELLABLE CELLULOSIC FIBERS, FOR EXAMPLE, COTTON, OR BLENDS OR MIXTURES THEREOF WITH SYNTHETIC FIBERS, FOR EXAMPLE, POLYESTER FIBERS, UNIFORMLY DYED TO YELLOW TO NAVY BLUE SHADES WITH ESSENTIALLY WATER INSOLUBLE, MONOAZO OR DISAZO DISPERSE DYES, FOR EXAMPLE, 2-CHLORO-4NITRO-4''-(N1N-BIS(BENZOYLOXYETHYL)AMINO)AZOBENZENE, SAID DYE FIBERS BEING FAST TO WASHING, DRYCLEANING AND CROCKING AND HAVING A REFLECTANCE COLOR VALUE (S'') AFTER SCOUR OF AT LEAST ABOUT 2.
Inventors
- 👤 John Blackwell
- 👤 Masuo Toji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:37
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/04; D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/6033; D06P3/6041; 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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |