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:
Dec. 06, 1994
Filed:
Mar. 17, 1992
Applicant:
Inventors:
Masakazu Yamaguchi, Tochigi, JP;
Akira Kawamata, Tochigi, JP;
Genji Imokawa, Tochigi, JP;
Kouichi Niinaka, Tochigi, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; A61K / ; A61K / ;
U.S. Cl.
CPC ...
568335 ; 424 59 ; 424 66 ;
Abstract
A 4,4-Dimethyl-1-phenylpentane-1,3-dione derivatives represented by the following formula (1): ##STR1## wherein all symbols are defined in the disclosure, is disclosed. An ultraviolet ray absorbent and a cosmetic comprising the derivative are also disclosed. The derivative of the present invention have excellent ultraviolet ray absorbing performance and superior light stability, and the ultraviolet ray absorbent and cosmetic comprising the derivative have excellent effect to prevent sunburn.