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:
Jun. 09, 1998
Filed:
Aug. 12, 1996
Applicant:
Inventors:
Tsutomu Saito, Yokohama, JP;
Fukuji Suzuki, Yokohama, JP;
Kazuhisa Ohno, Yokohama, JP;
Osamu Sakurai, Yokohama, JP;
Assignee:
Shiseido Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C09C / ; C01G / ;
U.S. Cl.
CPC ...
424 59 ; 106436 ; 423610 ; 424 60 ;
Abstract
A photochromic ultra-violet ray shield material principally composed of titanium oxide particles, which have a specific surface area of 25 m2/g or above and also have .DELTA.E=5.ltoreq.A (discoloration degrees) and B (at restoration)<.DELTA.E=3, a method of manufacturing the same and a skin external preparation using the same. Both photochromic property and excellent ultra-violet ray shield effect are obtained.