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:
Nov. 15, 2011
Filed:
Oct. 18, 2006
Applicants:
Hisakatsu Kawarai, Tokyo, JP;
Syuichiro Ishihara, Tokyo, JP;
Yoji Nakajima, Tokyo, JP;
Hisashi Yamada, Tokyo, JP;
Inventors:
Hisakatsu Kawarai, Tokyo, JP;
Syuichiro Ishihara, Tokyo, JP;
Yoji Nakajima, Tokyo, JP;
Hisashi Yamada, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrical-discharge machining apparatus for machining a workpiece using an aqueous machining fluid includes an insulator for electrically insulating a machine platen from the workpiece where the workpiece is placed. A machining-fluid-property measuring instrument measures the state of the machining fluid; and a machining-fluid-property controller maintains the pH of the machining fluid so as to be kept within 8.5 through 10.5.