US3838145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disazo compounds of low water solubility
Assignee: Individual
•
Filing: 1969-07-02
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Granted: 1974-09-24
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Expires: 1989-07-02
Abstract
Abstract THIS INVENTION RELATES TO DISAZO COMPOUNDS OF LOW WATER SOLUBILITY WHICH ARE EXCELLENT FOR DYEING AND PRINTING FIBRES AND TEXTILES CONSISTING OF SYNTHETIC OR SEMISYNTHETIC, HIGH MOLECULAR-WEIGHT ORGANIC SUBSTANCES OF HYDROPHOBIC CHARACTER. SUCH FIBRES INCLUDE THOSE OF LINEAR AROMATIC PPOLYESTERS, CELLULOSE DIACETATE, CELLULOSE TRIACETATE AND POLYAMIDE. RESULTING DYEINGS ARE FAST, E.G., TO THERMOFIXATION, SUBLIMATION, PLEATING, GAS FUMES, CROSSDYEING, DRY CLEANING, CHLORINE AND WET TESTS. THE DYES ARE OF THE GENERAL TYPE OF D-N=N-(2-R1,5-R3-1,4-CYCLOHEXYLENE)-N(-R5)-X-(CO OR SO2)- N(-R7)-A-N(-R8)-(CO OR SO2)-X-N(-R6)-(2-R4,5-R2-1,4-CYCLO HEXYLENE)-N=N-D
Inventors
- 👤 R Altermatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:49
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/32; C09B33/00; C09B33/02; C09B33/06; C09B43/12; C09B43/136; Y; Y10; Y10S; Y10S8/00; Y10S8/908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |