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. 19, 2005
Filed:
Aug. 28, 2001
Akira Fujishima, Kawasaki, Kanagawa 211-0012, JP;
Tetsu Tatsuma, Tokyo, JP;
Yoshihisa Ohko, Tokyo, JP;
Shuichi Saitoh, Tochigi, JP;
Katsuhisa Kashiwazaki, Tochigi, JP;
Akira Fujishima, Kawasaki, Kanagawa 211-0012, JP;
Tetsu Tatsuma, Tokyo, JP;
Yoshihisa Ohko, Tokyo, JP;
Shuichi Saitoh, Tochigi, JP;
Katsuhisa Kashiwazaki, Tochigi, JP;
Other;
Koyo Engineering, Tochigi, JP;
Abstract
The inventive photoreactive device has a semiconductor and an oxidation-reduction material. The semiconductor has a conduction band with a potential and being capable of producing electrons under the irradiation of light on the semiconductor. The oxidation-reduction material has a redox potential being positive compared with the potential of the conduction band. The semiconductor supplies electrons into the oxidation-reduction material to reduce it under the irradiation of light for storing the electrons. The stored electrons are discharged from the oxidation-reduction material into a metal material to prevent the corrosion of the metal material.