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:
Jun. 26, 2001
Filed:
May. 28, 1999
Applicant:
Inventors:
Tetsuya Tanaka, Chiyoda-machi, JP;
Koichi Tsuzuki, Tsuchiura, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/32 ;
U.S. Cl.
CPC ...
C02F 1/32 ;
Abstract
A method for purifying water containing organic matter includes dispersing photo-catalyst particles and an inorganic coagulant into the water; oxidizing the organic matter by activating the photo-catalyst particles by irradiating them with light; maintaining the diameter of the photo-catalyst particles to be equal to or less than 0.1 mm; and condensing the photo-catalyst particles and the inorganic coagulant.