Patent US4416873A successfully refreshed from Google Patents.
US4416873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined allantoin-hydrolyzed animal protein skin preparation
Assignee: Yves Saint Laurent Parfums SA
•
Filing: 1982-12-13
•
Granted: 1983-11-22
•
Expires: 2002-12-13
Abstract
Abstract A stable form of allantoin is provided which takes the form of a combined allantoin-hydrolyzed animal protein product which may be employed in the form of a hydroalcoholic solution, such as a cologne, after-shave lotion or skin toner, containing at least about 0.5% by weight allantoin which remains in solution, without crystallizing out, over extended periods of time. Methods for increasing the stability of allantoin and for forming a stable form of allantoin are also provided.
Inventors
- 👤 Eugene Puchalski
- 👤 Frances A. Donahue
- 👤 Richard P. Dixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:16
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/88; A; A23; A23J; A23J3/00; A23J3/04; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/4946; A61K8/64; A61K8/65; A61Q; A61Q19/00; A61Q19/002
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
59 words
A stable soothing hydroalcoholic skin preparation comprising a combined allantoin-hydrolyzed animal protein product in an amount of at least about 0.5% by weight, and panthenol, urea, ethanol or isopropyl alcohol and water, and optionally one or more humectants, preservatives, fragrances and solubilizing agents for the fragrances, said allantoin remaining in solution, without crystallizing out, for extended periods of time.
Claim 2
Dependent Claim
59 words
A stable soothing hydroalcoholic skin preparation comprising a combined allantoin-hydrolyzed animal protein product in an amount of at least about 0.5% by weight, and panthenol, urea, ethanol or isopropyl alcohol and water, and optionally one or more humectants, preservatives, fragrances and solubilizing agents for the fragrances, said allantoin remaining in solution, without crystallizing out, for extended periods of time.
Claim 3
Dependent Claim
23 words
The skin preparation as defined in claim 1 wherein said allantoin and hydrolyzed animal protein are combined in the form of a complex.
Claim 4
Dependent Claim
33 words
The skin preparation as defined in claim 1 wherein said hydrolyzed animal protein is present in a weight ratio to the allantoin of within the range of from about 100:1 to about 1:1.
Claim 5
Dependent Claim
37 words
The skin preparation as defined in claim 1 in the form of an aqueous solution containing from about 0.05 to about 5% by weight allantoin and from about 0.1 to about 10% by weight hydrolyzed animal protein.
Claim 6
Dependent Claim
46 words
The skin preparation as defined in claim 4 wherein the allantoin is present in an amount within the range of from about 0.5 to about 2% and the hydrolyzed animal protein is present in an amount within the range of from about 0.1 to about 1.5%.
Claim 7
Dependent Claim
32 words
The skin preparation as defined in claim 1 wherein the hydrolyzed animal protein is a collagen-derived animal protein having a molecular weight within the range of from about 100 to about 300,000.
Claim 8
Dependent Claim
35 words
The skin preparation as defined in claim 1 wherein the panthenol is in the d- or dl-form and is present in an amount within the range of from about 0.1 to about 10% by weight.
Claim 9
Dependent Claim
28 words
The skin preparation as defined in claim 1 wherein the urea is present in an amount within the range of from about 0.1 to about 10% by weight.
Claim 10
Dependent Claim
23 words
The skin preparation as defined in claim 1 further including a preservative which is dimethyl-dimethoyl hydantoin, imidazolidinyl urea, benzyl alcohol or a paraben.
Claim 11
Dependent Claim
26 words
The skin preparation as defined in claim 1 further including a humectant which is propylene glycol, polyethylene glycols, sorbitol, glycerine, sodium-2-pyrrolidone carboxylic acid or mixtures thereof.
Claim 12
Dependent Claim
26 words
The skin preparation as defined in claim 1 further including a fragrance and a solubilizing agent for the fragrance which is polyoxyethylene (13) octyl phenyl ether.
Claim 13
Dependent Claim
48 words
The skin preparation as defined in claim 1 wherein the water is present in an amount within the range of from about 20 to about 80% by weight and the alcohol is present in an amount within the range of from about 2.5 to about 50% by weight.
Claim 14
Dependent Claim
22 words
The skin preparation as defined in claim 12 wherein the water to alcohol weight ratio is from about 1:1 to about 9:1.
Claim 15
Dependent Claim
20 words
The skin preparation as defined in claim 1 in the form of a cologne, after-shave lotion, skin toner, or emulsion.
References Cited (Backward Citations)
US2303765A
Cited
US4374766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |