Patent US3679685A successfully refreshed from Google Patents.
US3679685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of 2-({62 -carboxyethyl)amino-3,4-phthaloylhenzacridone
Assignee: Sandoz AG
•
Filing: 1970-02-12
•
Granted: 1972-07-25
•
Expires: 1990-02-12
Abstract
Abstract Phthaloylbenzacridone disperse dyes, having an alkoxycarbonylalkylamino-substituent in an ortho-position, are suitable for dyeing, padding and printing fiber or filaments of hydrophobic, synthetic or semi-synthetic, high molecular organic substances.
Inventors
- 👤 Paul Buecheler
- 👤 Fred Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:32
CPC Classifications
C; C09; C09B; C09B5/00; C09B5/24; C09B5/34; C09B5/36
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
76 words
A phthaloylbenzacridone dye according to claim 1 wherein R is a member selected form the group consisting of a hydrogen atom, unsubstituted alkyl having from one to six carbon atoms and substituted alkyl, the alkyl of which has from one to six carbon atoms; any substituent of substituted alkyl being a member selected from the group consisting of alkoxy with from one to four carbon atoms, alkoxyalkoxy with from two to four carbon atoms and phenyl.
Claim 2
Dependent Claim
14 words
A phthaloylbenzacridone dye according to claim 1 wherein A in the 1''-position is methyl.
Claim 3
Dependent Claim
14 words
A phthaloylbenzacridone dye according to claim 1 wherein A in the 2''-position is methyl.
Claim 4
Dependent Claim
13 words
A phthaloylbenzacridone dye according to claim 1 wherein R is a hydrogen atom.
Claim 5
Dependent Claim
14 words
A phthaloylbenzacridone dye according to claim 1 wherein R is lower alkoxy (lower) alkyl.
Claim 6
Dependent Claim
12 words
A phthaloylbenzacridone dye according to claim 1 wherein R is lower alkoxyalkoxy(lower)alkyl.
Claim 7
Dependent Claim
11 words
A phthaloylbenzacridone dye according to claim 1 wherein R is phenyl(lower)alkyl.
Claim 8
Dependent Claim
11 words
A phthaloylbenzacridone dye according to claim 1 wherein R is cyclohexyl.
Claim 9
Dependent Claim
9 words
The dyestuff according to claim 1 of the formula
Claim 10
Dependent Claim
9 words
The dyestuff according to claim 1 of the formula
Claim 11
Dependent Claim
9 words
The dyestuff according to claim 1 of the formula
Claim 12
Dependent Claim
9 words
The dyestuff according to claim 1 of the formula
Claim 13
Dependent Claim
9 words
The dyestuff according to claim 1 of the formula
References Cited (Backward Citations)
US2481744A
Cited
GB944513A
Cited
US3436401A
Cited
US3299071A
Cited
US3360524A
Cited
GB1157017A
Cited
GB1157018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |