Drug – bio-affecting and body treating compositions – Topical sun or radiation screening – or tanning preparations
Reexamination Certificate
2006-09-05
2006-09-05
Wilson, James O. (Department: 1624)
Drug, bio-affecting and body treating compositions
Topical sun or radiation screening, or tanning preparations
C424S070900
Reexamination Certificate
active
07101537
ABSTRACT:
The invention relates to the use of quinoxaline derivatives of formula I, represented by formulas 1aand 1b, as photostable UV filters, in particular in cosmetic and pharmaceutical preparations for protecting the human epidermis or human hair against UV radiation, above all in the 280–400 nm range.
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Neunhoeffer Hans
Pfluecker Frank
Scholz Volker
Schwarz Michael
Merck Patentgesellschaft
Millen White Zelano & Branigan P.C.
Tucker Zachary C.
Wilson James O.
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