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. 11, 2000
Filed:
Jun. 02, 1998
Nagao Saito, Kasugai-shi, Aichi 487-0033, JP;
Naotake Mohri, Nagoya-shi, Aichi 468-0076, JP;
Yoshiki Tsunekawa, Okazaki, JP;
Kohei Shimamoto, Nagoya, JP;
Akihiro Goto, Tokyo, JP;
Takuji Magara, Tokyo, JP;
Yoshihito Imai, Tokyo, JP;
Hidetaka Miyake, Tokyo, JP;
Japan Science and Technology Corporation, Saitama, JP;
Other;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A surface treating is performed by an electric discharge. The electric discharge is generated by applying a voltage between an electrode and a metal workpiece. The electrode is a solid or green compact electrode or the like which is made of a reforming material. The workpiece may be an end mill or the like. Then, a coating layer is formed on a surface of the metal workpiece. Thereafter, a nitriding treatment is performed on the coating layer in a nitriding vessel or the like. Thus, a hard coating layer of better quality is formed on the surface of the workpiece whether a material of the workpiece is steel or hard metal.