US3697500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble disazo pyrazole dyestuffs containing fiber-reactive substituents
Assignee: Novartis AG
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Filing: 1968-08-20
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Granted: 1972-10-10
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Expires: 1988-08-20
Abstract
Abstract Water-soluble disazo dyestuffs are described, the molecule of which contains a 3- or 4-(pyrazolylene-(1)-benzoylamino)-6sulphophenyl moiety wherein the 4-position of the pyrazole ring and the 1-position of the sulphophenyl group, respectively, are linked each to one of the two azo bridges in the said molecule; these dyestuffs have from zero to at most two fiber-reactive groupings and are useful as dyes for cellulose and polyamide fibers.
Inventors
- 👤 Hans Ackermann
- 👤 Fabio Beffa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:32
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/002; C09B62/006; C09B62/01; C09B31/00; C09B31/02; C09B31/025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
17 words
A dyestuff as defined in claim 1, wherein m represents 1 and n represents 1 or 2.
Claim 2
Dependent Claim
23 words
A dyestuff as defined in claim 1, wherein m represents 2 or 3 and n represents an integer ranging from 2 to 5.
Claim 3
Dependent Claim
15 words
A dyestuff as defined in claim 3 wherein Y represents a fiber-reactive grouping selected from
Claim 4
Dependent Claim
15 words
A dyestuff as defined in claim 1, wherein Y represents a fiber-reactive grouping selected from
Claim 5
Dependent Claim
12 words
A dyestuff as defined in claim 4 which is of the formula
Claim 6
Dependent Claim
12 words
A dyestuff as defined in claim 4 which is of the formula
Claim 7
Dependent Claim
12 words
A dyestuff as defined in claim 4 which is of the formula
References Cited (Backward Citations)
US3196145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |