US4885169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cosmetic composition containing glycoproteins for the skin care
Assignee: Crinos Industria Farmacobiologica SpA
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Filing: 1985-01-04
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Granted: 1989-12-05
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Expires: 2005-01-04
Abstract
Abstract A cosmetic composition is disclosed containing natural glycoproteins useful with advantageous effect for the skin care.
Inventors
- 👤 Giovanni Gazzani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:37
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61Q; A61Q19/00; A61Q19/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A cosmetic composition for hydrating the skin, comprising at least one naturally derived, purified glycoprotein substantially free of low molecular weight products and having been isolated from the gastric mucosa or duodenum of mammals by: (a) hydrolyzing said mucosa or duodenum in water at a temperature of 50° C. to 100° C. for 10 minutes to 45 minutes at a pH of 1 to 10; (b) removing acidic products of the hydrolysis; and (c) diluting the product of step (b) with a non-solvent for the glycoprotein to precipitate said glycoprotein, said composition containing also water and at least one hygrostatic excipient, said composition being characterized by its ability to remain on the skin for an extended period of time.
Claim 2
Dependent Claim
119 words
A cosmetic composition for hydrating the skin, comprising at least one naturally derived, purified glycoprotein substantially free of low molecular weight products and having been isolated from the gastric mucosa or duodenum of mammals by: (a) hydrolyzing said mucosa or duodenum in water at a temperature of 50° C. to 100° C. for 10 minutes to 45 minutes at a pH of 1 to 10; (b) removing acidic products of the hydrolysis; and (c) diluting the product of step (b) with a non-solvent for the glycoprotein to precipitate said glycoprotein, said composition containing also water and at least one hygrostatic excipient, said composition being characterized by its ability to remain on the skin for an extended period of time.
Claim 3
Dependent Claim
15 words
The composition of claim 1, wherein said glycoprotein is extracted from mucus secreted by swines.
Claim 4
Dependent Claim
10 words
The composition of claim 1, containing a mixture of glycoproteins.
Claim 5
Dependent Claim
27 words
The cosmetic composition according to claim 1, containing at least one supplementary ingredient selected from the group consisting of vitaminic and aminoacids, placenta extracts and mixtures thereof.
Claim 6
Dependent Claim
34 words
The cosmetic composition according to claim 1, wherein said hygrostatic excipient is selected from the group consisting of glycerine, propylene glycol, sorbitol, polyalcohols, NMF (Natural Hydrating Factor), urea, aminoacids, pyrrolidone-carboxylic acid and mixtures thereof.
Claim 7
Dependent Claim
26 words
The cosmetic composition according to claim 1, wherein said glycoprotein is contained in dosage units varying from 0.5 to 5% by weight of the total composition.
Claim 8
Dependent Claim
20 words
The composition of claim 1, also containing cosmetically acceptable ingredients adapted to form a cream, an emulsion or a gel.
References Cited (Backward Citations)
GB1166939A
Cited
GB1210022A
Cited
DE1813154A1
Cited
FR2036453A5
Cited
US3607650A
Cited
US4108849A
Cited
US4425329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |