US4136166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin lightening composition
Assignee: Parbel of Florida Inc
•
Filing: 1977-04-18
•
Granted: 1979-01-23
•
Expires: 1997-04-18
Abstract
Abstract A skin lightener based on stabilized hydroquinone in a moisturizing base which also contains a sunscreen agent.
Inventors
- 👤 Gabriel Barnett
- 👤 Nathan Gershaw
- 👤 Jack J. Mausner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:33
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/23; A61K8/30; A61K8/33; A61K8/34; A61K8/347; A61K8/35; A61Q; A61Q19/00; A61Q19/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A skin lightening cosmetic composition, comprising, in parts by weight: ______________________________________
A) cetyl alcohol 0.25 - 8.00
polyoxyethylene(40)stearate
0.25 - 5.00
polyoxyethylene(2)cetyl ether
0.25 - 5.00
white mineral oil 2.00 - 35.00
preservative effective amount
stearic acid 0.25 - 5.00
amyl p-dimethylaminobenzoate
0.25 - 5.00
B) propylene glycol 1.00 - 15.00
preservative effective amount
hydroxyethylcellulose 0.25 - 3.50
magnesium aluminum silicate
0.25 - 3.50
ethylenediaminetetraacetic acid
disodium salt 0.05 - 1.00
citric acid (20% aq. sol'n)
0.10 - 1.00
hydroquinone 0.10 - 4.00
water qs. 100
C) sodium sulfite 0.05 - 2.50
sodium metabisulfite 0.05 - 2.50
water qs. 100.
______________________________________
Claim 2
Dependent Claim
101 words
A skin lightening cosmetic composition, comprising, in parts by weight: ______________________________________
A) cetyl alcohol 0.25 - 8.00
polyoxyethylene(40)stearate
0.25 - 5.00
polyoxyethylene(2)cetyl ether
0.25 - 5.00
white mineral oil 2.00 - 35.00
preservative effective amount
stearic acid 0.25 - 5.00
amyl p-dimethylaminobenzoate
0.25 - 5.00
B) propylene glycol 1.00 - 15.00
preservative effective amount
hydroxyethylcellulose 0.25 - 3.50
magnesium aluminum silicate
0.25 - 3.50
ethylenediaminetetraacetic acid
disodium salt 0.05 - 1.00
citric acid (20% aq. sol'n)
0.10 - 1.00
hydroquinone 0.10 - 4.00
water qs. 100
C) sodium sulfite 0.05 - 2.50
sodium metabisulfite 0.05 - 2.50
water qs. 100.
______________________________________
Claim 3
Dependent Claim
30 words
A composition as claimed in claim 1, wherein said preservative in phase (A) is 0.05 parts of a mixture of butylated hydroxyanisole, propyl gallate, and citric acid in propylene glycol.
Claim 4
Dependent Claim
80 words
A composition as claimed in claim 1, comprising, in parts by weight: ______________________________________
A) cetyl alcohol 4.0
polyoxyethylene(40)stearate
1.25
polyoxyethylene(2)cetyl ether
1.5
white mineral oil 11.0
butylated hydroxyanisole
effective amount
stearic acid 2.5
amyl p-dimethylaminobenzoate
2.0
B) propylene glycol 6.0
imidazolidinyl urea 0.35
methyl paraben 0.15
hydroxyethyl cellulose
0.5
magnesium aluminum silicate
0.75
ethylenediaminetetraacetic acid
disodium salt 0.10
citric acid 0.5
hydroquinone 2.0
water qs. 100
C) sodium sulfite 0.26
sodium metabisulfite 0.17
water qs. 100
D) perfume 0.20.
______________________________________
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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) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |