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:
Apr. 22, 1986
Filed:
Nov. 09, 1984
Applicant:
Inventors:
Tohru Tejima, Tochigi, JP;
Koichi Nakamura, Ichikaimachi, JP;
Michihiro Hattori, Utsunomiya, JP;
Shinichi Masuda, Wakayama, JP;
Genji Imokawa, Utsunomiya, JP;
Naotake Takaishi, Utsunomiya, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07C / ;
U.S. Cl.
CPC ...
424 59 ; 2604105 ; 560138 ;
Abstract
A chalcone derivative of the formula (I): ##STR1## in which R.sub.1 represents hydrogen or a methyl group, and R.sub.2 represents a linear or branched aliphatic hydrocarbon group having from 2 to 24 carbon atoms. The derivative is effective in protecting the skin when made into ultraviolet absorbing agents including an anti-sunburn oil, since it has the maximum absorbing capacity at a wave length in the vicinity of 350 nm, does not irritate the skin and is highly compatible with a cosmetic base.