US4021486A
Expired / Lapsed
US
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Hydroxyalkyl-amino nitrodiphenylamine compounds useful as hair dyes
Assignee: P&G Hair Care Holding Inc
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Filing: 1975-01-14
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Granted: 1977-05-03
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Expires: 1995-01-14
Abstract
Abstract Compounds useful as hair dyes of the formula: ##STR1## in which R 5 is OH, -NH(lower hydroxyalkyl), -N(lower hydroxyalkyl) 2 or -O lower alkyl.
Inventors
- 👤 Alexander Halasz
- 👤 David Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:37
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/418; A61K8/413; A61Q; A61Q5/00; A61Q5/06; A61Q5/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
27 words
A compound useful for a hair dye of the formula: ##STR22## wherein said hydroxyalkyl groups have 2 to 4 carbon atoms and 1 to 3 hydroxy groups.
Claim 2
Dependent Claim
27 words
A compound useful for a hair dye of the formula: ##STR22## wherein said hydroxyalkyl groups have 2 to 4 carbon atoms and 1 to 3 hydroxy groups.
Claim 3
Dependent Claim
18 words
The compound of claim 1 in which --N(lower hydroxyalkyl) 2 is --N(CH 2 CH 2 OH) 2 .
Claim 4
Dependent Claim
28 words
A compound useful for a hair dye of the formula: ##STR23## wherein said hydroxyalkyl group has from 2 to 4 carbon atoms and 1 to 3 hydroxy groups.
Claim 5
Dependent Claim
28 words
A compound useful for a hair dye of the formula: ##STR23## wherein said hydroxyalkyl group has from 2 to 4 carbon atoms and 1 to 3 hydroxy groups.
Claim 6
Dependent Claim
27 words
A compound useful for a hair dye of the formula: ##STR24## wherein said hydroxyalkyl groups have 2 to 4 carbon atoms and 1 to 3 hydroxy groups.
Claim 7
Dependent Claim
27 words
A compound useful for a hair dye of the formula: ##STR24## wherein said hydroxyalkyl groups have 2 to 4 carbon atoms and 1 to 3 hydroxy groups.
Claim 8
Dependent Claim
19 words
The compound according to claim 4 in which --N(lower hydroxyalkyl) 2 is --N(CH 2 CH 2 OH) 2 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |