US3797994A
Expired / Lapsed
US
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Hair coloring compositions containing organic acid anhydride-dye polymers
Assignee: L'Oréal SA
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Filing: 1971-03-19
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Granted: 1974-03-19
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Expires: 1991-03-19
Abstract
Abstract This invention relates to hair dye compositions which comprise a solution of a colored polymer in a solvent selected from the group consisting of water, alcohol and their mixtures.
Inventors
- 👤 G Kalopissis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:27
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8164; A61K8/8141; A61K8/8147; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; A61K2800/00; A61K2800/40; A61K2800/57; Y; Y10; Y10S; Y10S424/00; Y10S424/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
13 words
The composition of claim 1 wherein said organic acid anhydride is poly(maleic anhydride).
Claim 2
Dependent Claim
13 words
The composition of claim 1 wherein said organic acid anhydride is poly(itaconic anhydride).
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said organic acid anhydride is poly(maleic anhydride).
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein said organic acid anhydride is poly(acrylic anhydride).
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein said organic acid anhydride is poly(acrylic/methacrylic anhydride).
Claim 6
Dependent Claim
40 words
The composition of claim 1 wherein said solvent is an aqueous alcohol solution containing about 20 - 50 weight percent alcohol and said colored polymer is present in amounts ranging from about 0.5 - 6 weight percent of said composition.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |