US4540567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cosmetic composition
Assignee: Lever Brothers Co
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Filing: 1979-09-17
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Granted: 1985-09-10
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Expires: 1999-09-17
Abstract
Abstract A cosmetically acceptable composition contains a C1-C4 alkyl lactate dissolved in a mixture of water and a water-miscible C2-C4 alkylene glycol of a polymer thereof. The composition should have stabilized pH of less than 7.
Inventors
- 👤 Francis E. J. Oneto
- 👤 Marc Vermersch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:53
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/34; A61K8/345; A61K8/37; A61P; A61P17/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
A cosmetically acceptable composition for treating acne comprising (a) from about 2% to about 50% by weight of a C 1 -C 4 alkyl lactate; (b) from about 5% to about 50% by weight of water; and (c) from about 1% to about 80% by weight of a water-miscible C 2 -C 4 alkylene glycol or a polymer thereof, the composition having a pH value of from 4 to 7.
Claim 2
Dependent Claim
70 words
A cosmetically acceptable composition for treating acne comprising (a) from about 2% to about 50% by weight of a C 1 -C 4 alkyl lactate; (b) from about 5% to about 50% by weight of water; and (c) from about 1% to about 80% by weight of a water-miscible C 2 -C 4 alkylene glycol or a polymer thereof, the composition having a pH value of from 4 to 7.
Claim 3
Dependent Claim
13 words
The composition according to claim 1, wherein the alkyl lactate is ethyl lactate.
Claim 4
Dependent Claim
15 words
The composition according to claim 1, wherein the glycol is n-propylene glycol or 1,3-butylene glycol.
Claim 5
Dependent Claim
31 words
The composition according to claim 1, wherein the glycol is polyethylene glycol having a molecular weight of up to 10,000 or polypropylene glycol having a molecular weight of up to 400.
Claim 6
Dependent Claim
20 words
The composition according to claim 1, additionally comprising an effective amount of chlorhexidene digluconate to act as an antibacterial substance.
Claim 7
Dependent Claim
24 words
The composition according to claim 1, additionally comprising an effective amount of glycyrrhetic acid or menthyl pyrrolidone carboxylate to act as an anti-inflammatory substance.
Claim 8
Dependent Claim
20 words
The composition according to claim 1, additionally comprising an effective amount of zinc sulphate to act as a healing agent.
Claim 9
Dependent Claim
10 words
The composition according to claim 1, additionally comprising a propellant.
Claim 10
Independent Claim
91 words
A method for alleviating the symptons of acne which comprises topically applying an effective amount of a cosmetically acceptable composition to involved portions of human skin, said composition comprising (a) from about 2% to about 50% by weight of a C 1 -C 4 alkyl lactate; (b) from about 5% to about 50% by weight of water; and (c) from about 1% to about 80% by weight of a water-miscible C 2 -C 4 alkylene glycol or a polymer thereof, the composition having a pH value of from 4 to 7.
Claim 11
Independent Claim
91 words
A method for alleviating the symptons of acne which comprises topically applying an effective amount of a cosmetically acceptable composition to involved portions of human skin, said composition comprising (a) from about 2% to about 50% by weight of a C 1 -C 4 alkyl lactate; (b) from about 5% to about 50% by weight of water; and (c) from about 1% to about 80% by weight of a water-miscible C 2 -C 4 alkylene glycol or a polymer thereof, the composition having a pH value of from 4 to 7.
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |