US6036969A
Expired / Lapsed
US
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Process for measuring cosmetic tanning and test kit therefor
Assignee: Coty BV
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Filing: 1999-07-28
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Granted: 2000-03-14
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Expires: 2019-07-28
Abstract
Abstract There are a process for evaluating beforehand a self-tanning composition in reference to different skin types, and a test kit to implement the process. A cosmetic self-tanning medium containing dihydroxyacetone is thinly rubbed on at least one test field, and the resulting tan on the test field is visually evaluated after 5 seconds to 5 minutes. The test field has at least one substance selected from the group of amino acids Gly, Ala, Val, Leu, Ile, Ser, Thr, Cys, Met, Asn, Lys, Asp, Gln, Glu, Phe, Tyr, Trp, His, Pro and the purines adenine, guanine, xanthine and hypoxanthine and mixtures of individual compounds of these chemicals.
Inventors
- 👤 Karin Golz-Berner
- 👤 Leonhard Zastrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:00
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; G01N33/521; G01N33/68; G01N33/6803; G01N33/6806
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
129 words
A process for cosmetically determining the tan of a self-tanning composition comprising the steps of thinly rubbing a cosmetic self-tanning medium containing dihydroxyacetone on at least one test field that is on a substrate selected from the group consisting of paper, a film, and a plate made of a material selected from the group consisting of natural material and synthetic material; and visually evaluating the resulting tan on the test field after 5 seconds to 5 minutes; whereby the test field has at least one substance selected from the group consisting of amino acids Gly, Ala, Val, Leu, Ile, Ser, Thr, Cys, Met, Asn, Lys, Asp, Gln, Glu, Phe, Tyr, Trp, His, Pro and the purines adenine, guanine, xanthine and hypoxanthine and mixtures of individual compounds of these chemicals.
Claim 2
Dependent Claim
129 words
A process for cosmetically determining the tan of a self-tanning composition comprising the steps of thinly rubbing a cosmetic self-tanning medium containing dihydroxyacetone on at least one test field that is on a substrate selected from the group consisting of paper, a film, and a plate made of a material selected from the group consisting of natural material and synthetic material; and visually evaluating the resulting tan on the test field after 5 seconds to 5 minutes; whereby the test field has at least one substance selected from the group consisting of amino acids Gly, Ala, Val, Leu, Ile, Ser, Thr, Cys, Met, Asn, Lys, Asp, Gln, Glu, Phe, Tyr, Trp, His, Pro and the purines adenine, guanine, xanthine and hypoxanthine and mixtures of individual compounds of these chemicals.
Claim 3
Dependent Claim
17 words
A process according to claim 1, comprising using a self-tanning composition that contains 0.5-7 weight percent dihydroxyacetone.
Claim 4
Dependent Claim
13 words
A process according to claim 1, comprising applying histidine to the test field.
Claim 5
Dependent Claim
13 words
A process according to claim 1, comprising applying arginine to the test field.
Claim 6
Dependent Claim
13 words
A process according to claim 1, comprising applying adenine to the test field.
Claim 7
Dependent Claim
17 words
A process according to claim 1, comprising visually evaluating the tan that results in the test field.
Claim 8
Dependent Claim
21 words
A process according to claim 1, comprising comparing the tan that results in the test field with a given comparative scale.
Claim 9
Dependent Claim
22 words
A process according to claim 1, comprising applying the substance at a concentration of 0.01-1.5 weight percent and then drying the substance.
Claim 10
Dependent Claim
42 words
A process according to claim 1, comprising using a self-tanning composition with a precursor of dihydroxyacetone in which the hydrogen of one or both OH groups is replaced by an alkoxycarbonyl group or arylalkyloxycarbonyl group, and each group has 2-25 carbon atoms.
Claim 11
Dependent Claim
118 words
A cosmetic test kit for a self-tanning medium based on dihydroxyacetone comprising a substrate material selected from the group consisting of paper, a film, and a plate made of a material selected from the group consisting of natural material and synthetic material; a field marked on the substrate material to which a substance is applied that is selected from the group of amino acids consisting of Gly, Ala, Val, Leu, Ile, Ser, Thr, Cys, Met, Asn, Lys, Asp, Gln, Glu, Phe, Tyr, Trp, His, Pro and the purines adenine, guanine, xanthine and hypoxanthine and mixtures of individual compounds of these chemicals; and the self-tanning medium containing dihydroxyacetone or a precursor of dihydroxyacetone which reacts to form a tan.
Claim 12
Dependent Claim
118 words
A cosmetic test kit for a self-tanning medium based on dihydroxyacetone comprising a substrate material selected from the group consisting of paper, a film, and a plate made of a material selected from the group consisting of natural material and synthetic material; a field marked on the substrate material to which a substance is applied that is selected from the group of amino acids consisting of Gly, Ala, Val, Leu, Ile, Ser, Thr, Cys, Met, Asn, Lys, Asp, Gln, Glu, Phe, Tyr, Trp, His, Pro and the purines adenine, guanine, xanthine and hypoxanthine and mixtures of individual compounds of these chemicals; and the self-tanning medium containing dihydroxyacetone or a precursor of dihydroxyacetone which reacts to form a tan.
Claim 13
Dependent Claim
32 words
A test kit according to claim 10, comprising two fields marked on the substrate material that have different substances selected from the group consisting of amino acids, purines, and from mixtures thereof.
Claim 14
Dependent Claim
18 words
A test kit according to claim 11, wherein one field contains adenine and a second field contains histidine.
Claim 15
Dependent Claim
30 words
A test kit according to claim 10, comprising three fields marked on the substrate that contain different substances selected from the group consisting of amino acids, purines, and mixtures thereof.
Claim 16
Dependent Claim
14 words
A test kit according to claim 11, wherein the fields also have different tones.
Claim 17
Dependent Claim
26 words
A test kit according to claim 10, further comprising a color comparison scale next to the substrate or next to the substrate with different skin tones.
Claim 18
Dependent Claim
16 words
A test kit according to claim 10, further comprising a removable film covering the test field.
References Cited (Backward Citations)
WO1995015742A1
Cited
US5705145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-14 | 2003-09-13 | 2004-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-14 | 2007-09-13 | 2008-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-14 | 2011-09-13 | 2012-03-14 | $7700.00 | Window Closed / Lapsed |