Drug – bio-affecting and body treating compositions – Topical sun or radiation screening – or tanning preparations
Reexamination Certificate
2007-12-25
2007-12-25
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Topical sun or radiation screening, or tanning preparations
C424S060000, C424S400000, C424S401000
Reexamination Certificate
active
10485389
ABSTRACT:
The invention relates to cosmetic formulations containing dihydroxy-acetone and a topical support in addition to one or several compounds selected from the compounds of formulae (Ia) and (Ib), the physiologically acceptable salts of compounds of formulae (Ia) and (Ib), and the stereoisomeric forms of formulae (Ia) and (Ib), wherein R1, R2, R3, R4and n have the meanings cited in Claim1. The cosmetic formulations are characterized in that the UV-A protective effect of dihydroxyacetone is increased.
REFERENCES:
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M. Eisvogel, “Sun Protection with Anti-Ageing Merck Puts Ectoin to Work”,Cossma: Cosmetics, Spray Technology, Marketing, Braun Fachverlage, Karlsruhe, DE, Bd. 2, Nr. 4 (Apr. 2001).
Driller Hans-Jürgen
Hitzel Sabine
Dodson Shelley A.
Merck Patentgesellschaft Mit Beschrankter Haftung
Millen White Zelano & Branigan P.C.
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