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:
Jul. 04, 2000
Filed:
Jun. 02, 1998
Shiseido Co., Ltd., Tokyo, JP;
Abstract
A phenylenediamine derivative or a salt thereof in accordance with the present invention is expressed by the following formula 1: ##STR1## wherein A represents a group expressed by --CO--, --CH.sub.2 CO--, --CS--, or --SO.sub.2 --; Y represents a carbon atom or nitrogen atom; R.sub.1 represents a lower alkyl group; R.sub.2 represents a hydrogen, lower alkyl, alkenyl, benzyl, or benzoyl group; and each of R.sub.3 and R.sub.4 represents an alkyl group having 1-10 carbon atoms. The phenylenediamine derivative above mentioned, as a radical scavenger, has antioxidant effect and lipid peroxidation inhibitory activity so as to be available for inhibiting brain infarction or brain edema.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile