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US4612331A
Expired / Lapsed
US
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Skin treatment composition
Assignee: Lever Brothers Co
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Filing: 1985-01-04
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Granted: 1986-09-16
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Expires: 2005-01-04
Abstract
Abstract A cosmetically acceptable composition for topical application to human skin comprises from 0.1 to 20% by weight of a substituted 2-hydroxyoctanoic acid or 2-ketooctanoic acid or a mixture thereof, together with an amount of a special neutralizing agent sufficient to adjust the pH of the composition to a value of from 3 to 7. The special neutralizing agent is one having a cation whose ionic radius is at least 100 pm.
Inventors
- 👤 Martin D. Barratt
- 👤 Paul A. Bowser
- 👤 James A. Durrant
- 👤 Dieno George
- 👤 Keith J. Hall
- 👤 John C. Hill
- 👤 Michael R. Lowry
- 👤 Colin Prottey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:33
CPC Classifications
A; A61; A61Q; A61Q19/00; A61Q19/007; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A cosmetically acceptable aqueous composition for topical application to human skin, which comprises: (i) from 0.1 to 20% by weight of 2-hydroxyoctanoic acid; (ii) from 0.1 to 20% by weight of 2-hydroxypropionic acid; and (iii) an amount of an alkanolamine sufficient to adjust the pH of the composition to a value of from 3.8 to 4.5.
Claim 2
Dependent Claim
56 words
A cosmetically acceptable aqueous composition for topical application to human skin, which comprises: (i) from 0.1 to 20% by weight of 2-hydroxyoctanoic acid; (ii) from 0.1 to 20% by weight of 2-hydroxypropionic acid; and (iii) an amount of an alkanolamine sufficient to adjust the pH of the composition to a value of from 3.8 to 4.5.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
US4507319A
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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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |