US4959393A
Expired / Lapsed
US
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Skin depigmental agent
Assignee: Kuraray Co Ltd
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Filing: 1989-04-27
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Granted: 1990-09-25
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Expires: 2009-04-27
Abstract
Abstract A skin depigmental agent characterized by comprising a resorcinol derivative having a linear alkyl group is provided.
Inventors
- 👤 Masahiro Torihara
- 👤 Yoshin Tamai
- 👤 Manzo Shiono
- 👤 Kenji Tasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:36
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/34; A61K8/347; A61Q; A61Q1/00; A61Q1/02; A61Q19/00; A61Q19/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
60 words
A skin depigmental composition, comprising a skin depigmenting effective amount of a resorcinol of the formula (1) ##STR18## wherein R is a linear alkyl group having from 2-12 carbon atoms or a linear alkyl group having from 2-12 carbon atoms in which a hydrogen atom on the linear alkyl group is substituted by a methyl group, and a cosmetic base.
Claim 2
Dependent Claim
60 words
A skin depigmental composition, comprising a skin depigmenting effective amount of a resorcinol of the formula (1) ##STR18## wherein R is a linear alkyl group having from 2-12 carbon atoms or a linear alkyl group having from 2-12 carbon atoms in which a hydrogen atom on the linear alkyl group is substituted by a methyl group, and a cosmetic base.
Claim 3
Dependent Claim
15 words
The composition of claim 1, wherein said resorcinol comprises from 0.01-15 wt.% of said composition.
Claim 4
Dependent Claim
14 words
The composition of claim 2, wherein said resorcinol comprises 0.1-10 wt.% of said composition.
Claim 5
Dependent Claim
18 words
The composition of claim 1, wherein said cosmetic base comprises a cream, ointment, emulsion, lotion, oil or pack.
Claim 6
Dependent Claim
25 words
The composition of claim 1, wherein said cosmetic base is beeswax, cetyl alcohol, stearic acid, gylcerine, propylene glycol, propylene glycol monostearate or polyoxyethylene cetyl ether.
Claim 7
Dependent Claim
18 words
The composition of claim 1, wherein said cosmetic base is oleyl alcohol, ethanol, lauryl ether or sorbitan monolaurate.
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) | 1993-09-24 | 1994-03-26 | 1994-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-24 | 1998-03-26 | 1998-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-24 | 2002-03-26 | 2002-09-25 | $7700.00 | Window Closed / Lapsed |