Patent US4711775A successfully refreshed from Google Patents.
US4711775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cosmetic compositions
Assignee: Hoechst AG
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Filing: 1984-12-04
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Granted: 1987-12-08
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Expires: 2004-12-04
Abstract
Abstract A cosmetic composition comprising a content of an 1-hydroxy-2-pyridone of the general formula <IMAGE> in which R1 stands for hydrogen, alkyl of 1 to 17 carbon atoms, alkenyl of 2 to 17 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, bicycloalkyl of 7 to 9 carbon atoms, cycloalkyl-alkyl of 1 to 4 alkyl carbon atoms, the cycloalkyl groups being optionally substituted by alkyl groups of 1 to 4 carbon atoms, aryl, aralkyl of 1 to 4 alkyl carbon atoms, aryl-alkenyl of 2 to 4 alkenyl carbon atoms, aryloxy-alkyl or arylthio-alkyl of 1 to 4 alkyl carbon atoms, benzhydryl, phenylsulfonyl-alkyl of 1 to 4 alkyl carbon atoms, furyl or furyl-alkenyl of 2 to 4 alkenyl carbon atoms, the aryl groups being optionally substituted by alkyl of 1 to 4 carbon atoms, by alkoxy of 1 to 4 carbon atoms, by nitro, cyano or halogen atoms, R2 stands for hydrogen, alkyl of 1 to 4 carbon atoms, alkenyl or alkinyl of 2 to 4 carbon atoms, halogen atoms or benzyl, R3 stands for hydrogen, alkyl of 1 to 4 carbon atoms or phenyl, and R4 stands for hydrogen, alkyl of 1 to 4 carbon atoms, alkenyl of 2 to 4 carbon atoms, methoxy-methyl, halogen or benzyl, and/or salt thereof, which may be used as an anti-dandruff agent.
Inventors
- 👤 Walter Dittmar
- 👤 Eberhard Futterer
- 👤 Gerhard Lohaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:50
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/006; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4906; A61K8/4926; A61P; A61P17/00; A61P17/08; Y; Y10; Y10S; Y10S424/00; Y10S424/01; Y10S424/02; Y10S424/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
32 words
An anti-dandruff shampoo comprising a surfactant and, as the active anti-dandruff agent therein, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylphenyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt.
Claim 2
Dependent Claim
32 words
An anti-dandruff shampoo comprising a surfactant and, as the active anti-dandruff agent therein, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylphenyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt.
Claim 3
Dependent Claim
53 words
A shampoo, for short-term treatment of the hair and destined to be rinsed off, comprising: (a) as an active ingredient, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt; (b) a surfactant; and (c) water or an aqueous alcoholic solution as a carrier.
Claim 4
Dependent Claim
53 words
A shampoo, for short-term treatment of the hair and destined to be rinsed off, comprising: (a) as an active ingredient, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt; (b) a surfactant; and (c) water or an aqueous alcoholic solution as a carrier.
Claim 5
Dependent Claim
17 words
A shampoo as in claim 2 wherein the content of (a) is from 0.2 to 2 percent.
Claim 6
Dependent Claim
13 words
A shampoo as in claim 2 wherein the surfactant is an anionic surfactant.
Claim 7
Dependent Claim
21 words
A shampoo as in claim 2 wherein the salt of the active ingredient (a) is a low molecular weight alkanolamine salt.
Claim 8
Dependent Claim
12 words
A shampoo as in claim 2 wherein the carrier (c) is water.
Claim 9
Dependent Claim
58 words
A hair rinse or hair conditioner, for short-term treatment of the hair and destined to be rinsed off, comprising: (a) as an active ingredient, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt; (b) a cationic surfactant; and (c) water or an aqueous alcoholic solution as a carrier.
Claim 10
Dependent Claim
58 words
A hair rinse or hair conditioner, for short-term treatment of the hair and destined to be rinsed off, comprising: (a) as an active ingredient, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt; (b) a cationic surfactant; and (c) water or an aqueous alcoholic solution as a carrier.
Claim 11
Dependent Claim
16 words
A hair rinse or hair conditioner as in claim 7 wherein the carrier (c) is water.
Claim 12
Dependent Claim
25 words
A hair rinse or hair conditioner as in claim 7 wherein the salt of the active ingredient (a) is a low molecular weight alkanolamine salt.
Claim 13
Dependent Claim
60 words
A shampoo, for short-term treatment of the hair and destined to be rinsed off, comprising: (a) as an active ingredient, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt; (b) a surfactant; and (c) water or an aqueous alcoholic solution as a carrier, said shampoo having a physiologically acceptable pH.
Claim 14
Dependent Claim
60 words
A shampoo, for short-term treatment of the hair and destined to be rinsed off, comprising: (a) as an active ingredient, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt; (b) a surfactant; and (c) water or an aqueous alcoholic solution as a carrier, said shampoo having a physiologically acceptable pH.
Claim 15
Dependent Claim
12 words
A shampoo as in claim 10 wherein the carrier (c) is water.
Claim 16
Dependent Claim
69 words
A hair rinse or hair conditioner, for short-term treatment of the hair and destined to be rinsed off, comprising: (a) as an active ingredient, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt; (b) a cationic surfactant; and (c) water or an aqueous alcoholic solution as a carrier, said hair rinse or hair conditioner having a physiologically acceptable pH.
Claim 17
Dependent Claim
69 words
A hair rinse or hair conditioner, for short-term treatment of the hair and destined to be rinsed off, comprising: (a) as an active ingredient, from 0.2 to 10 percent of 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone, a salt thereof, or a mixture of said pyridone with said salt; (b) a cationic surfactant; and (c) water or an aqueous alcoholic solution as a carrier, said hair rinse or hair conditioner having a physiologically acceptable pH.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |