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. 17, 2014
Filed:
Dec. 04, 2009
Hisakatsu Kawarai, Tokyo, JP;
Hironori Kuriki, Tokyo, JP;
Jyunji Tanimura, Tokyo, JP;
Tamayo Ohata, Tokyo, JP;
Tatsushi Sato, Tokyo, JP;
Takashi Yuzawa, Tokyo, JP;
Hisakatsu Kawarai, Tokyo, JP;
Hironori Kuriki, Tokyo, JP;
Jyunji Tanimura, Tokyo, JP;
Tamayo Ohata, Tokyo, JP;
Tatsushi Sato, Tokyo, JP;
Takashi Yuzawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Ryoden Koki Engineering Co., Ltd., Aichi, JP;
Abstract
A corrosion preventing apparatus including: a water purifying part that includes a hydrogen-ion form resin and a hydroxy-ion form resin; an anticorrosive part that includes a cation form resin and an anion form resin having anticorrosive ions supported thereon; a conductivity measuring part that measures a measured value of conductivity of a machining liquid; and a control part that controls a flow of the machining liquid to the water purifying part and the anticorrosive part on the basis of the conductivity measuring part; wherein the control part performs control on the basis of predetermined first and second conductivities and the measured value measured by the conductivity measuring part.