Patent US3904690A successfully refreshed from Google Patents.
US3904690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-Nitro-meta-phenylenediamines
Assignee: L'Oréal SA
•
Filing: 1970-09-08
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Granted: 1975-09-09
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Expires: 1990-09-08
Abstract
Abstract Substituted nitrophenylene-diamine hair dye compounds.
Inventors
- 👤 Gregoire Kalopissis
- 👤 Andree Bugaut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:52
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/418; A61Q; A61Q5/00; A61Q5/06; A61Q5/065
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
8 words
A WATER SOLUBLE DYE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
8 words
A WATER SOLUBLE DYE COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
28 words
The water soluble dye compound of claim 1 in which R6 and R7 are selected from the group consisting of hydrogen and lower alkyl having 1-4 carbon atoms.
Claim 4
Dependent Claim
13 words
A compound of claim 1, in which said compound is 1-methyl-2-amino-4- gamma -dimethylamino-propyl-amino-5-nitrobenzene.
Claim 5
Dependent Claim
13 words
A compound of claim 1, in which said compound is 1-methyl-2-amino-4- Beta -amino-ethylamino-5-nitrobenzene.
Claim 6
Dependent Claim
13 words
A compound of claim 1, in which said compound is 1-amino-3-gamma -dimethylamino-propylamino-4-nitrobenzene monohydrochloride.
Claim 7
Dependent Claim
13 words
a compound of claim 1, in which said compound is 1-N,N-dimethylamino-3- Beta -aminoethyl-amino-4-nitrobenzene.
Claim 8
Dependent Claim
13 words
A compound of claim 1, in which said compound is 1-N,N-dimethylamino-3- gamma -dimethylamino-propylamino-4-nitrobenzene.
Claim 9
Dependent Claim
14 words
A compound of claim 1, in which said compound is 1-N,N-dimethylamino-3- Beta -diethylaminoethylamino-4-nitrobenzene hydrochloride.
Claim 10
Dependent Claim
14 words
A compound of claim 1, in which said compound is 1-N,N-diethylamino-3- gamma -dimethylaminopropylamino-4-nitrobenzene hydrochloride.
Claim 11
Dependent Claim
14 words
A compound of claim 1, in which said compound is 1-methyl-2-N- Beta -diethylaMino-ethylamino-4-dimethyl amino-5-nitrobenzene.
References Cited (Backward Citations)
US3431304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |