Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2004-02-12
2009-08-18
McKane, Joseph K. (Department: 1626)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C549S430000
Reexamination Certificate
active
07576125
ABSTRACT:
A melanogenesis inhibitor characterized by containing at least one kind of piperonyl alcohol represented by the following general formula (1)wherein R is a straight chain or branched chain alkyl group having 3 to 18 carbon atoms, a straight chain or branched chain alkenyl group having 3 to 18 carbon atoms, or an optionally substituted alicyclic alkyl group.The melanogenesis inhibitor is superior in stability and safety and has a high melanogenesis-inhibiting effect; and a skin preparation containing the melanogenesis inhibitor is very stable, safe, and has a sufficient fair skin effect and a sufficient effect for curing skin dyspigmentation.
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Victor, Sandra R. et al., “Toxicity of synthetic piperonyl compounds to leaf-cutting ants and their symbiotic fungus”, Database Caplus, XP002282788.
Ishida Kenya
Tamai Eiko
Coppins Janet L
Kubovcik & Kubovcik
McKane Joseph K.
Takasago International Corporation
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