Patent US3969339A successfully refreshed from Google Patents.
US3969339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble pentakis-azo dyestuffs derived from 4,4'-diaminoazobenzene
Assignee: Produits Chimiques Ugine Kuhlmann
•
Filing: 1973-09-14
•
Granted: 1976-07-13
•
Expires: 1993-09-14
Abstract
Abstract The invention is directed to pentakisazo dyestuffs of the formula:
Inventors
- 👤 Andre Louis Sailer
- 👤 Pierre Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:08
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/32; D06P3/3206; D06P3/3226; C; C09; C09B; C09B35/00; C09B35/35
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
Pentakisazo dyestuff of the formula: ##SPC7## in which A 1 and A 2 are the same or different and each is monosulpho-naphthylene, hydroxy-monosulpho-naphthylene or hydroxy-disulpho-naphthylene and B 1 and B 2 are the same or different and each is dihydroxy-phenyl, diamino-phenyl, diamino-tolyl, diamino-sulpho-phenyl, amino-hydroxy-phenyl, N-(sulpho-methyl)-amino-hydroxy-phenyl, amino-naphthyl, hydroxy-naphthyl, hydroxy-sulpho-naphthyl, amino-sulpho-naphthyl, amino-hydroxy-monosulpho-naphthyl, amino-hydroxy-disulpho-naphthyl, phenyl-methyl-hydroxy-pyrazolyl, (dichloro-sulpho-phenyl)-methyl-hydroxy-pyrazolyl, (sulphophenyl)-methyl-hydroxy-pyrazolyl, 1-carbethoxy-2-oxo-propyl, N-phenyl-1-carbamoyl-2-oxy-propyl, N-(sulphophenyl)-1-carbamoyl-2-oxo-propyl, 2,4-dioxo-3-pentyl, dicarbethoxy-methyl, phenyl-carboxy-hydroxy-pyrazolyl, N-tolyl-1-carbamoyl-2-oxo-propyl, or N-(chlorophenyl)-1-carbamoyl-2-oxo-propyl.
Claim 2
Dependent Claim
63 words
Pentakisazo dyestuff of the formula: ##SPC7## in which A 1 and A 2 are the same or different and each is monosulpho-naphthylene, hydroxy-monosulpho-naphthylene or hydroxy-disulpho-naphthylene and B 1 and B 2 are the same or different and each is dihydroxy-phenyl, diamino-phenyl, diamino-tolyl, diamino-sulpho-phenyl, amino-hydroxy-phenyl, N-(sulpho-methyl)-amino-hydroxy-phenyl, amino-naphthyl, hydroxy-naphthyl, hydroxy-sulpho-naphthyl, amino-sulpho-naphthyl, amino-hydroxy-monosulpho-naphthyl, amino-hydroxy-disulpho-naphthyl, phenyl-methyl-hydroxy-pyrazolyl, (dichloro-sulpho-phenyl)-methyl-hydroxy-pyrazolyl, (sulphophenyl)-methyl-hydroxy-pyrazolyl, 1-carbethoxy-2-oxo-propyl, N-phenyl-1-carbamoyl-2-oxy-propyl, N-(sulphophenyl)-1-carbamoyl-2-oxo-propyl, 2,4-dioxo-3-pentyl, dicarbethoxy-methyl, phenyl-carboxy-hydroxy-pyrazolyl, N-tolyl-1-carbamoyl-2-oxo-propyl, or N-(chlorophenyl)-1-carbamoyl-2-oxo-propyl.
Claim 3
Dependent Claim
22 words
Pentakisazo dyestuffs according to claim 1 corresponding to the general formula: ##SPC8## in which B 1 and B 2 are the same.
Claim 4
Dependent Claim
21 words
Pentakisazo dyestuff according to claim 1 corresponding to the formula: ##SPC9## in which B 1 and B 2 are the same.
Claim 5
Dependent Claim
21 words
Pentakisazo dyestuff according to claim 1 corresponding to the formula: ##SPC10## in which B 1 and B 2 are the same.
Claim 6
Dependent Claim
29 words
Pentakisazo dyestuff according to claim 1 corresponding to the formula: ##SPC11## in which n represents the number 0 or 1 and B 1 and B 2 are the same.
References Cited (Backward Citations)
US1976044A
Cited
CH209556A
Cited
US2117426A
Cited
US2153201A
Cited
US2182348A
Cited
US2270675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |