US4764505A
Expired / Lapsed
US
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Skin treatment composition
Assignee: Shiseido Co Ltd
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Filing: 1985-03-20
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Granted: 1988-08-16
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Expires: 2005-03-20
Abstract
Abstract A skin treatment composition comprising at least one glycoside of hydroquinone having the general formula: <IMAGE> (I) wherein R represents a pentose residue, a hexose residue, an amino sugar residue, or an uronic acid residue, or the methylated product thereof in a skin treatment base. This skin treatment composition can further contain at least one UV absorber. The hydroquinone glycoside (I) exhibits an excellent depigmentation effect and effectively suppresses skin irritation caused by the UV absorber.
Inventors
- 👤 Yoshimori Fujinuma
- 👤 Tomohisa Asahara
- 👤 Satoru Akiu
- 👤 Yumiko Suzuki
- 👤 Hideyuki Ichikawa
- 👤 Yoshio Katsumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:39
CPC Classifications
A; A61; A61Q; A61Q19/00; A61Q19/02; A61K; A61K8/00; A61K8/02; A61K8/0212; A61K8/18; A61K8/30; A61K8/49; A61K8/4973; A61K8/60; A61K8/602; A61P; A61P17/00; A61K2800/00; A61K2800/74; A61K2800/75
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
56 words
A skin treatment composition comprising 0.1% to 30% by weight of a glycoside of hydroquinone having the formula ##STR3## where R represents a pentose residue, a hexose residue, an amino sugar residue, or an uronic acid residue, or the methylated product thereof, 0.05% to 10% by weight of a UV absorber and a skin treatment base.
Claim 2
Dependent Claim
56 words
A skin treatment composition comprising 0.1% to 30% by weight of a glycoside of hydroquinone having the formula ##STR3## where R represents a pentose residue, a hexose residue, an amino sugar residue, or an uronic acid residue, or the methylated product thereof, 0.05% to 10% by weight of a UV absorber and a skin treatment base.
Claim 3
Dependent Claim
17 words
A skin treatment composition as claimed in claim 1, wherein the compound (I) is arbutin or hydroquinone-β-L-arabinoside.
Claim 4
Dependent Claim
42 words
A skin treatment composition as claimed in claim 1, wherein said skin treatment base comprises 0 to 35% by weight of an alcohol, 0.01% to 5% by weight of a surfactant, 0 to 10% by weight of oil, and water or wax.
Claim 5
Dependent Claim
34 words
A skin treatment composition as claimed in claim 1, wherein said skin treatment base comprises 1% to 30% by weight of a film-forming agent, 0 to 35% by weight of an alcohol, and water.
Claim 6
Independent Claim
92 words
A method of depigmenting a patient's skin comprising applying thereto a composition containing an effective amount of a UV absorber, 0.1% to 30% by weight of a glycoside of hydroquinone having the formula: ##STR4## wherein R represents a pentose residue, a hexose residue, an amino sugar residue, or an uronic acid residue, or the methylated product thereof, 0to 35% by weight of an alcohol, 0.01% to 5% by weight of a surfactant, 0 to 10% by weight of oil, 0.05% to 10% by weight of the UV absorber, and water or wax.
Claim 7
Independent Claim
92 words
A method of depigmenting a patient's skin comprising applying thereto a composition containing an effective amount of a UV absorber, 0.1% to 30% by weight of a glycoside of hydroquinone having the formula: ##STR4## wherein R represents a pentose residue, a hexose residue, an amino sugar residue, or an uronic acid residue, or the methylated product thereof, 0to 35% by weight of an alcohol, 0.01% to 5% by weight of a surfactant, 0 to 10% by weight of oil, 0.05% to 10% by weight of the UV absorber, and water or wax.
Claim 8
Dependent Claim
20 words
The method according to claim 5, wherein the amount of the glycoside of hydroquinone is 6% to 20% by weight.
References Cited (Backward Citations)
US3201385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |