US3984199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble monoazo dyestuffs
Assignee: Cassella Farbwerke Mainkur AG
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Filing: 1973-12-10
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Granted: 1976-10-05
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Expires: 1993-12-10
Abstract
Abstract Dyestuffs of the formula: ##SPC1## Wherein X and Y are hydrogen, halogen, cyano, nitro, alkyl, alkylsulfonyl or alkoxy and Z is hydrogen or an optionally substituted alkyl, alkenyl, cycloalkyl, aralkyl or aryl radical and the utility thereof in the dyeing and printing of synthetic hydrophobic materials.
Inventors
- 👤 Ernst Heinrich
- 👤 Horst Kindler
- 👤 Joachim Ribka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:29
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/922; D06P1/924; C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3608; D06P1/16; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A process for dyeing and printing synthetic hydrophobic materials which comprises employing as the dyestuff, a monoazo dyestuff of the formula ##SPC10##
Claim 2
Dependent Claim
22 words
A process for dyeing and printing synthetic hydrophobic materials which comprises employing as the dyestuff, a monoazo dyestuff of the formula ##SPC10##
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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |