US4302199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair dyeing method
Assignee: Procter and Gamble Co
•
Filing: 1980-12-29
•
Granted: 1981-11-24
•
Expires: 2000-12-29
Abstract
Abstract A method for coloring hair comprising sequentially treating the hair with a solution of water soluble ferric ion salt and with a carboxylic acid solution.
Inventors
- 👤 Prem S. Juneja
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:25
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/445; A61K8/19; A61K8/33; A61K8/36; A61K8/365; A61Q; A61Q5/00; A61Q5/06; A61Q5/065
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
64 words
A method for coloring hair comprising sequentially treating the hair with a solution of from about 0.01% to about 5% of a water soluble ferric ion salt and with a solution of from about 0.01% to about 10% of a carboxylic acid or salt thereof selected from the group consisting of hydroxycinnamic acids, aminobenzoic acids, water soluble salts of these acids and mixtures thereof.
Claim 2
Independent Claim
64 words
A method for coloring hair comprising sequentially treating the hair with a solution of from about 0.01% to about 5% of a water soluble ferric ion salt and with a solution of from about 0.01% to about 10% of a carboxylic acid or salt thereof selected from the group consisting of hydroxycinnamic acids, aminobenzoic acids, water soluble salts of these acids and mixtures thereof.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein the ferric ion salt solution is applied to the hair first.
Claim 4
Dependent Claim
14 words
A method according to claim 2 wherein the carboxylic acid is a hydroxycinnamic acid.
Claim 5
Dependent Claim
33 words
A method according to claim 3 wherein the carboxylic acid is selected from the group consisting of 3,4 dihydroxycinnamic acid, o-hydroxycinnamic acid, p-hydroxycinnamic acid, water soluble salts of these acids, and mixtures thereof.
Claim 6
Dependent Claim
14 words
A method according to claim 4 wherein the ferric ion salt is ferric chloride.
Claim 7
Dependent Claim
17 words
A method according to claim 5 wherein the hair is wetted prior to the ferric chloride treatment.
Claim 8
Dependent Claim
14 words
A method according to claim 2 wherein the carboxylic acid is an aminobenzoic acid.
Claim 9
Dependent Claim
30 words
A method according to claim 7 wherein the carboxylic acid is selected from the group consisting of p-aminobenzoic acid, 3,4-diaminobenzoic acid, water soluble salts of these acids and mixtures thereof.
Claim 10
Dependent Claim
14 words
A method according to claim 8 wherein the ferric ion salt is ferric chloride.
Claim 11
Dependent Claim
17 words
A method according to claim 9 wherein the hair is wetted prior to the ferric chloride treatment.
References Cited (Backward Citations)
US2313027A
Cited
US2719104A
Cited
US3128232A
Cited
US3973574A
Cited
US3632295A
Cited
US3838966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |