The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2013
Filed:
Feb. 06, 2009
Naoto Hanyu, Yokohama, JP;
Tomoko Saito, Yokohama, JP;
Takako Shibata, Yokohama, JP;
Kiyoshi Sato, Yokohama, JP;
Kimihiro Ogino, Yokohama, JP;
Naoto Hanyu, Yokohama, JP;
Tomoko Saito, Yokohama, JP;
Takako Shibata, Yokohama, JP;
Kiyoshi Sato, Yokohama, JP;
Kimihiro Ogino, Yokohama, JP;
Shiseido Company Ltd., Chuo-ku, Tokyo, JP;
Abstract
The present invention provides a compound having an excellent inhibitory action on melanin production and being useful as a whitening agent, and a skin external preparation containing the compound. The whitening agent of the present invention comprises, as an active ingredient, a compound represented by formula (1) or a pharmacologically acceptable salt thereof: wherein X, X, and Xare each CRor N; R, R, and Rare each H, Calkyl, Calkoxy, SH, OH, or NRR, wherein Rand Rare each H, Calkyl, or hydroxy-Calkyl, or NRRforms a saturated or unsaturated 5- or 6-membered hetero ring; and B is a substituted or unsubstituted pyrazole, imidazole, pyridine, or piperidine; with the proviso that at least one of R, R, R, and Ris a group other than Calkyl in the case where X═X═Y═N and X═CR.