Patent US4584191A successfully refreshed from Google Patents.
US4584191A
Expired / Lapsed
US
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Hair care and skin care compositions containing biotin ethyl ester
Assignee: FHOFFMANN-LA ROCHE & Co A SWISS Co
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Filing: 1982-12-02
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Granted: 1986-04-22
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Expires: 2002-12-02
Abstract
Abstract Biotin esters, namely biotin C2-4-alkyl esters, are prepared by esterifying biotin with a C2-4-alkanol. These esters have the capability of being absorbed by the human skin better than biotin and are converted into biotin during or after absorption. Since biotin itself promotes the fat and cholesterol synthesis of the skin, the novel biotin esters of this invention are useful as active ingredients for cosmetic hair-care and skin-care compositions.
Inventors
- 👤 Hans U. Hostettler
- 👤 Bruno Poncioni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:46
CPC Classifications
C; C07; C07D; C07D495/00; C07D495/02; C07D495/04; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/67; A61Q; A61Q19/00; A61Q5/00; A61Q5/02; Y; Y10; Y10S; Y10S424/00; Y10S424/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
30 words
A cosmetic composition in the form of a hair lotion comprising from about 0.01% to about 5.0% by weight of biotin ethyl ester in combination with a compatible carrier material.
Claim 2
Dependent Claim
30 words
A cosmetic composition in the form of a hair lotion comprising from about 0.01% to about 5.0% by weight of biotin ethyl ester in combination with a compatible carrier material.
Claim 3
Dependent Claim
29 words
A cosmetic composition in the form of a shampoo comprising from about 0.01% to about 5.0% by weight of biotin ethyl ester in combination with a compatible carrier material.
Claim 4
Dependent Claim
29 words
A cosmetic composition in the form of a shampoo comprising from about 0.01% to about 5.0% by weight of biotin ethyl ester in combination with a compatible carrier material.
Claim 5
Dependent Claim
30 words
A cosmetic composition in the form of a skin cream comprising from about 0.1% to about 5% by weight of biotin ethyl ester in combination with a compatible carrier material.
Claim 6
Dependent Claim
30 words
A cosmetic composition in the form of a skin cream comprising from about 0.1% to about 5% by weight of biotin ethyl ester in combination with a compatible carrier material.
Claim 7
Dependent Claim
26 words
A method for the care of the hair which method comprises applying an effective amount of the cosmetic composition according to claim 1 to the hair.
Claim 8
Dependent Claim
28 words
Method for the care of the skin, which method comprises applying an effective amount of a cosmetic composition according to claim 3 to the skin to be treated.
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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |