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:
Jul. 24, 2012
Filed:
Aug. 20, 2007
Takayuki Nakano, Tokyo, JP;
Takayuki Nakano, Tokyo, JP;
Koganei Corporation, Tokyo, JP;
Abstract
A method of purifying cooling water which requires the lowest maintenance and management cost without the need for a cumbersome cleaning operation for removing scale in an electrolytic purifying vessel by taking out the electrodes from the electrolytic purifying vessel, and an apparatus therefor are provided. In the method of purifying circulating cooling water by applying a DC voltage across opposing electrodes while flowing water to be treated therebetween, so that ions in the water are electrolytically precipitated on the surfaces of electrodes on the negative pole side, thereby purifying the water to be treated, the electrodes comprise titanium and have an oxide film preformed by heating having a thickness of 5 nm to 130 nm thereon, and electric current is flown between the electrodes in an amount large enough to apply a voltage capable of dielectrically breaking down the oxide film on the surfaces of electrodes on the positive pole side.