Patent US1462693A successfully refreshed from Google Patents.
Patent US4563519A successfully refreshed from Google Patents.
US4563519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anthraquinone azopyrazalone colorants
Assignee: BASF SE
•
Filing: 1983-08-12
•
Granted: 1986-01-07
•
Expires: 2003-08-12
Abstract
Abstract Compounds which, in one of the possible tautomeric forms, correspond to the general formula I ##STR1## where n is 1 or 2 and, if n is 1, R is unsubstituted or substituted aryl or heteroaryl or, if n is 2, R is a bridge member, and the rings A and B can be further substituted, are outstanding colorants for surface coatings, printing inks or plastics.
Inventors
- 👤 Peter Dimroth
- 👤 Heinrich Kowarsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:04
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/0018; C09B29/34; C09B29/36; C09B29/3604; C09B29/3647; C09B29/3652; C09B29/366; C09B33/00; C09B33/02; C09B33/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
29 words
A colorant which corresponds to the formula ##STR68## where n=1 and R in phenyl or phenyl independently subtituted by chlorine, bromine, methyl, ethyl, methoxy, ethoxy, acetylamino, benzoylamino or nitro.
Claim 2
Dependent Claim
29 words
A colorant which corresponds to the formula ##STR68## where n=1 and R in phenyl or phenyl independently subtituted by chlorine, bromine, methyl, ethyl, methoxy, ethoxy, acetylamino, benzoylamino or nitro.
Claim 3
Dependent Claim
11 words
The colorant of claim 1 wherein n=1 and R is phenyl.
Claim 4
Dependent Claim
11 words
The colorant of claim 1 wherein n=1 and R is para-chlorophenyl.
Claim 5
Dependent Claim
11 words
The colorant of claim 1 wherein n=1 and R is 2,4-dichlorophenyl.
Claim 6
Dependent Claim
11 words
The colorant of claim 1 wherein n=1 and R is para-toluene.
Claim 7
Dependent Claim
11 words
The colorant of claim 1 wherein n=1 and R is para-nitrophenyl.
Claim 8
Dependent Claim
11 words
The colorant of claim 1 wherein n=1 and R is 4-methoxyphenyl.
Claim 9
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by chlorine.
Claim 10
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by bromine.
Claim 11
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by methyl.
Claim 12
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by ethyl.
Claim 13
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by methoxy.
Claim 14
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by ethoxy.
Claim 15
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by acetylamino.
Claim 16
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by benzoylamino.
Claim 17
Dependent Claim
12 words
The colorant of claim 1, wherein R is phenyl substituted by nitro.
Claim 18
Dependent Claim
11 words
The colorant of claim 1 wherein n=1 and R is ##STR69##
References Cited (Backward Citations)
US1855289A
Cited
US2040927A
Cited
US2112276A
Cited
US2346922A
Cited
US2871234A
Cited
GB925859A
Cited
US3212841A
Cited
US3320233A
Cited
DE1919081A1
Cited
US3954398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |