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. 28, 2010
Filed:
Mar. 28, 2008
Yasuhiro Masaki, Osaka, JP;
Tadashi Fukuda, Gobo, JP;
Katsuhiro Nishihara, Amagasaki, JP;
Rie Katsui, Hirakata, JP;
Yasuhiro Masaki, Osaka, JP;
Tadashi Fukuda, Gobo, JP;
Katsuhiro Nishihara, Amagasaki, JP;
Rie Katsui, Hirakata, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A titanium oxide-based photocatalyst which can exhibit excellent photocatalytic properties in response to visible light while maintaining its inherent activity in response to ultraviolet light and which is suitable for mass production contains bismuth as a first additional metal component and at least one metal element selected from silicon, zirconium, aluminum, and hafnium as a second additional metal component in titanium oxide. The Bi/Ti atomic ratio is preferably at least 0.0001 and at most 1.0, the atomic ratio of the second additional metal to Ti is preferably at least 0.0001 and at most 0.8, and a portion of bismuth is preferably present in the form of lower valence (Bior Bi). The presence of lower valence bismuth can be ascertained by XPS analysis.