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:
Aug. 05, 2003
Filed:
Jun. 20, 2000
Toshio Moro, Tokyo, JP;
Akihiro Goto, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A discharge surface treatment method with which discharge is caused to occur between an electrode and a workpiece to generate energy to form a coating on a surface of the workpiece, and method therefore. An electrode is made by combining a hard material, such as WC, and a soft material, such as Co. The hard and soft materials are mixed and compressed into a green compact. The green compact is baked in a vacuum furnace at a temperature which is below the sintering temperature but high enough to melt the soft material. The melted soft material fills the gaps between the particles of the hard material, resulting in an electrode having a texture similar to chalk called incomplete-sintering. The electrode is then used in discharge surface treatment.