US3666747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyestuffs
Assignee: Bayer AG
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Filing: 1968-11-13
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Granted: 1972-05-30
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Expires: 1988-11-13
Abstract
Abstract Fiber reactive dyestuffs for use on cellulose containing textile materials having the formula WHEREIN F is the radical of an organic dyestuff, A is a five- or six-membered isocyclic or heterocyclic ring, X is hydrogen or an organic substituent, Y is hydrogen, halogen or an organic radical, ''''halogen'''' is a halogen atom, m a whole number and n a whole number from 1 to 3.
Inventors
- 👤 Edgar Siegel
- 👤 Klaus Sasae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:17
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
62 words
A dyestuff which in the free acid state corresponds to the formula wherein F1 is the radical of a metal-free sulfonic acid group-containing monoazo dyestuff of the benzene-azo-naphthalene, the benzene-azo-benzene, the Naphthalene-azo-naphthalene and the benzene-azo-pyrazolone-4 series, the group being bonded thereto directly through a nuclear carbon atom and R is a member selected from the group consisting of hydrogen and lower alkyl.
Claim 2
Dependent Claim
14 words
The dyestuff according to claim 1 wherein R is hydrogen and Ha1 is chlorine.
Claim 3
Dependent Claim
12 words
The dyestuff which in the free acid states corresponds to the formula
Claim 4
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 5
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 6
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 7
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 8
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 9
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 10
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 11
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 12
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 13
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 14
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
Claim 15
Dependent Claim
12 words
The dyestuff which in the free acid state corresponds to the formula
References Cited (Backward Citations)
GB315451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |