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:
Sep. 21, 2010
Filed:
Sep. 27, 2002
Junji Hiraoka, Fukuoka, JP;
Takahiro Doke, Fukuoka, JP;
Hisato Haraga, Fukuoka, JP;
Daisuke Noguchi, Kanagawa, JP;
Yoshio Kawamata, Kanagawa, JP;
Junji Hiraoka, Fukuoka, JP;
Takahiro Doke, Fukuoka, JP;
Hisato Haraga, Fukuoka, JP;
Daisuke Noguchi, Kanagawa, JP;
Yoshio Kawamata, Kanagawa, JP;
Shibaura Mechatronics Corporation, Yokohama-shi, JP;
Abstract
A photocatalyst according to the invention comprises a photocatalytic film of a compound of titanium and oxygen and is characterized in that the photocatalytic film is made porous and has 0.02 or higher value as a value calculated by dividing the arithmetical mean deviation of profile Ra with the film thickness. The photocatalytic film can also be specified by the intensity ratio between x-ray diffraction peaks of the anatase structure of titanium oxide. Such a porous photocatalytic material can be obtained by a reactive sputtering method in conditions of adjusting film formation parameters such as the film formation rate, the sputtering pressure, the substrate temperature, the oxygen partial pressure and the like in proper ranges, respectively, and the photocatalyst material is provided with excellent decomposition and hydrophilization capability.