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:
Mar. 11, 2003
Filed:
Oct. 20, 1998
Shiro Ogata, Kanagawa-ken, JP;
Kazuhiko Sonomoto, Saitama-ken, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A photocatalyst-supporting body comprises a substrate, a porous layer fixedly disposed on at least one surface of the substrate, and a semiconductor photocatalyst layer deposited on the surface of the porous layer. The porous layer is made of fine particles or porous nonwoven metal fabric. Since the semiconductor photocatalyst is bound to the substrate through the porous layer, the area of the photocatalytic surface is increased and the contaminants in a fluid flow being treated adequately contact the photocatalytic surface thereby to enhance the photocatalytic efficiency. The photocatalytic efficiency is further improved by making the porous layer dense (rough) in the vicinity of the surface of the substrate and rough (dense) with increasing distance from the surface of the substrate.