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. 21, 2009
Filed:
Mar. 20, 2003
Katsumi Okada, Nara, JP;
Katsuhiro Nishihara, Amagasaki, JP;
Yasuhiro Masaki, Osaka, JP;
Haruhiko Kajimura, Kobe, JP;
Michiyasu Takahashi, Nishinomiya, JP;
Tadashi Yao, Amagasaki, JP;
Tadashi Ogasawara, Nishinomiya, JP;
Munetoshi Watanabe, Suita, JP;
Shiji Shimosaki, Amagasaki, JP;
Kouji Oda, Kobe, JP;
Sadanobu Nagaoka, Kobe, JP;
Katsumi Okada, Nara, JP;
Katsuhiro Nishihara, Amagasaki, JP;
Yasuhiro Masaki, Osaka, JP;
Haruhiko Kajimura, Kobe, JP;
Michiyasu Takahashi, Nishinomiya, JP;
Tadashi Yao, Amagasaki, JP;
Tadashi Ogasawara, Nishinomiya, JP;
Munetoshi Watanabe, Suita, JP;
Shiji Shimosaki, Amagasaki, JP;
Kouji Oda, Kobe, JP;
Sadanobu Nagaoka, Kobe, JP;
Osaka Titanium Technologies Co., Ltd., Hyogo, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
Titanium oxide-based photocatalysts which contain a metal halide in titanium oxide and which are prepared from titanium oxide and/or its precursor, which may optionally be heat treated, by contact with a reactive gas containing a metal halide of the formula MXor MOX(wherein M=a metal, X=a halogen, and n=an integer) with heating stably develop a high photocatalytic activity with visible light irradiation. The photocatalysts may subsequently be stabilized by contact with water or by heat treatment, and/or promoted by contact with a heteropoly acid and/or an isopoly acid so as to include a metal complex in the titanium oxide. Photocatalysts prepared in this manner exhibit novel ESR features. The present invention also provides methods for preparing these photocatalysts, a photocatalyst dispersion and a photocatalytic coating fluid containing such a photocatalyst, and photocatalytic functional products and methods for their manufacture using the photocatalyst.