US4131650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collagen foil for cosmetic application
Assignee: Henkel AG and Co KGaA
•
Filing: 1976-04-09
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Granted: 1978-12-26
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Expires: 1996-04-09
Abstract
Abstract In the treatment of skin wherein an aqueous paste is applied to the skin, left in contact therewith for a period of time and thereafter removed, the improvement which comprises placing over the paste a foil containing at least about 3 percent of water soluble collagen by weight and having a water permeability of more than about 0.1 gram/dm 2 /minute, whereby collagen is transported through the paste and is absorbed by the skin. Desirably the foil is about 0.01 to 0.03 mm thick and is cross-linked to an extent corresponding to that produced by about 0.1-0.5 percent by weight of glutardialdehyde applied in an acid medium. It may further contain a cosmetically active agent such as an amino acid, peptide, protein, hormone, placenta-extract, phosphatide, tissue-extract, fresh cells and vitamins. The paste may be dried by heating, producing shrinkage of the foil to increase contact with the skin.
Inventors
- 👤 Klaus Braumer
- 👤 Zdenek Eckmayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:46
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61K8/65; A61K8/02; A61K8/0212; A61Q; A61Q19/00; Y; Y10; Y10S; Y10S128/00; Y10S128/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
75 words
In the treatment of skin wherein an aqueous cosmetically-active paste is applied to the skin, left in contact therewith for a period of time and thereafter removed, the improvement which comprises placing over the paste a collagen-foil containing at least about 3 percent of water soluble collagen by weight and having a water permeability of more than about 0.1 gram/dm 2 /minute, whereby collagen is transported through the paste and is absorbed by the skin.
Claim 2
Dependent Claim
75 words
In the treatment of skin wherein an aqueous cosmetically-active paste is applied to the skin, left in contact therewith for a period of time and thereafter removed, the improvement which comprises placing over the paste a collagen-foil containing at least about 3 percent of water soluble collagen by weight and having a water permeability of more than about 0.1 gram/dm 2 /minute, whereby collagen is transported through the paste and is absorbed by the skin.
Claim 3
Dependent Claim
27 words
The process according to claim 1, wherein the paste is permitted to dry while in contact with the skin and the collagen foil shrinks during such drying.
Claim 4
Dependent Claim
31 words
The process according to claim 1, wherein the foil contains about 5 to 10 percent of water soluble collagen by weight and has a thickness of about 0.01 to 0.03 mm.
Claim 5
Dependent Claim
18 words
The process according to claim 1, wherein the collagen in the foil is at most only partially crosslinked.
Claim 6
Dependent Claim
34 words
The process according to claim 1, wherein the collagen in the foil is crosslinked to an extent corresponding to that produced by about 0.1-0.5 percent by weight of glutardialdehyde applied in an acid medium.
Claim 7
Dependent Claim
36 words
The process according to claim 1, wherein the foil further contains at least one cosmetically active agent selected from the group consisting of an amino acid, peptide, protein, hormone, placenta-extract, phosphatide, tissue-extract, fresh cells and vitamins.
Claim 8
Dependent Claim
76 words
The process according to claim 6, wherein the foil contains about 5 to 10 percent of water soluble collagen by weight and has a thickness of about 0.01 to 0.03 mm, the collagen in the foil is crosslinked to an extent corresponding to that produced by about 0.1-0.5 percent by weight of glutardialdehyde applied to an acid medium, the paste is dried while in contact with the skin and the collagen foil shrinks during such drying.
Claim 9
Dependent Claim
39 words
A foil suited for cosmetic use containing about 3 to 10 percent by weight of water soluble collagen, having a thickness of about 0.01 to 0.03 mm and a water permeability of more than about 0.1 gram/dm 2 /minute.
Claim 10
Dependent Claim
39 words
A foil suited for cosmetic use containing about 3 to 10 percent by weight of water soluble collagen, having a thickness of about 0.01 to 0.03 mm and a water permeability of more than about 0.1 gram/dm 2 /minute.
Claim 11
Dependent Claim
27 words
A foil according to claim 8 crosslinked to an extent corresponding to that produced by about 0.1-0.5 percent by weight of glutardialdehyde applied in an acid medium.
Claim 12
Dependent Claim
33 words
A foil according to claim 9 further containing at least one cosmetically active agent selected from the group consisting of an amino acid, peptide, protein, hormone, placenta-extract, phosphatide, tissue-extract, fresh cells and vitamins.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |