US4466955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin bleaching stick containing hydroquinone
Assignee: Joh A Benckiser GmbH
•
Filing: 1982-06-09
•
Granted: 1984-08-21
•
Expires: 2002-06-09
Abstract
Abstract This invention relates to skin bleaching compositions for localized application based on hydroquinone in anhydrous cosmetic formulations.
Inventors
- 👤 Luis C. Calvo
- 👤 Irene C. Obernier
- 👤 Steve J. Hasher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:32
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/34; A61K8/347; A61K8/342; A61K8/39; A61K8/72; A61K8/84; A61K8/86; A61K8/92; A61K8/925; A61Q; A61Q19/00; A61Q19/02; A61K2800/00; A61K2800/20; A61K2800/30; A61K2800/31; Y; Y10; Y10S; Y10S424/00; Y10S424/05
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
An anhydrous cosmetic blemish-bleaching solid stick composition comprising as the active ingredient an anhydrous solution consisting essentially of a tyrosine-inhibiting amount, in the range 2-10 wt. % of hydroquinone, and 40 to 45 wt.% of an alkoxylated fatty ether of the formula ##STR2## where R is a saturated or unsaturated fatty alcohol radical or lanolin alcohol radical and x and y are independent integers of 0 to about 50, with the sum of x and y ranging from at least 2 to about 70 and a non-aqueous cosmetically acceptable vehicle selected from the group consisting of fatty alcohol, oil containing an alcohol group, fat and wax.
Claim 2
Dependent Claim
106 words
An anhydrous cosmetic blemish-bleaching solid stick composition comprising as the active ingredient an anhydrous solution consisting essentially of a tyrosine-inhibiting amount, in the range 2-10 wt. % of hydroquinone, and 40 to 45 wt.% of an alkoxylated fatty ether of the formula ##STR2## where R is a saturated or unsaturated fatty alcohol radical or lanolin alcohol radical and x and y are independent integers of 0 to about 50, with the sum of x and y ranging from at least 2 to about 70 and a non-aqueous cosmetically acceptable vehicle selected from the group consisting of fatty alcohol, oil containing an alcohol group, fat and wax.
Claim 3
Dependent Claim
26 words
The composition according to claim 1 having the formula ______________________________________
wt. %
______________________________________
Hydroquinone 2-5
Alkoxylated Fatty Ether 40-45
Anhydrous Stick Forming Vehicle
to 100%.
______________________________________
Claim 4
Dependent Claim
46 words
The composition according to claim 1 having essentially the formula ______________________________________
Shea Butter Unsaponifiables
3.000
Isopropyl Lanolate 7.000
Oleyl Alcohol 9.700
White Beeswax 13.500
Esbesco Wax 13.500
Ozokerite 4.800
Propyl Paraben 0.150
Butyl Paraben 0.150
Castor Oil 3.000
Hydroquinone 2.000
PPG-3 Myristyl Ether
43.200
100.000%
______________________________________
Claim 5
Dependent Claim
44 words
The composition according to claim 1 having essentially the formula ______________________________________
Isopropyl Lanolate
7.000
Shea Butter 3.000
Oleyl Alcohol 9.700
Beeswax 13.500
Esbesco Wax 13.500
Ozokerite 4.800
Propyl Paraben 0.150
Butyl Paraben 0.150
Castor Oil 3.000
PPG-4 Myristyl Ether
41.200
Hydroquinone 4.000
100.000%
______________________________________
Claim 6
Dependent Claim
47 words
The composition according to claim 1 having essentially the formula ______________________________________
Shea Butter Unsaponifiables
3.000
Isopropyl Lanolate 7.000
Oleyl Alcohol 9.700
White Beeswax 13.500
Esbesco Wax 13.500
Ozokerite 4.800
Propyl Paraben 0.150
Butyl Paraben 0.150
Caster Oil 3.000
Hydroquinone 2.000
PPG-30 Iso Cetyl Ether
42.200
100.000%
______________________________________
Claim 7
Dependent Claim
46 words
The composition according to claim 1 having essentially the formula ______________________________________
Shea Butter Unsaponifiables
3.000
Isopropyl Lanolate 7.000
Oleyl Alcohol 9.700
White Beeswax 13.500
Esbesco Wax 13.500
Ozokerite 4.800
Propyl Paraben 0.150
Butyl Paraben 0.150
Castor Oil 3.000
Hydroquinone 2.000
PPG-30 Oleyl Ether 43.200
100.000%
______________________________________
Claim 8
Dependent Claim
44 words
The composition according to claim 1 having essentially the formula ______________________________________
Isopropyl Lanolate
7.000
Shea Butter 3.000
Oleyl Alcohol 9.700
Beeswax 13.500
Esbesco Wax 13.500
Ozokerite 4.800
Propyl Paraben 0.150
Butyl Paraben 0.150
Castor Oil 3.000
PPG-30 Lanolin Ether
41.200
Hydroquinone 4.000
100.000%
______________________________________
Claim 9
Dependent Claim
45 words
The composition according to claim 1 having essentially the formula ______________________________________
Shea Butter Unsaponifiables
3.000
Isopropyl Lanolate 7.000
Oleyl Alcohol 9.700
White Beeswax 13.500
Esbesco Wax 13.500
Ozokerite 4.800
Propyl Paraben 0.150
Butyl Paraben 0.150
Castor Oil 3.000
Hydroquinone 2.000
Oleth 10 43.200
100.000%
______________________________________
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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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |