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:
Sep. 03, 2019
Filed:
Jan. 07, 2015
Hitachi Metals, Ltd., Tokyo, JP;
Takayuki Tsuji, Kitaibaraki, JP;
Hiromitsu Kuroda, Hitachi, JP;
Tetsuya Tokumitsu, Hitachi, JP;
Takamitsu Kimura, Hitachi, JP;
Yosuke Shiba, Hitachi, JP;
Hiroshi Matsuzaki, Hitachi, JP;
Yuichi Komuro, Hitachi, JP;
Shingo Amamiya, Hitachi, JP;
HITACHI METALS, LTD., Tokyo, JP;
Abstract
An electrical discharge machining electrode wire includes a core including a copper or a copper alloy, and a covering layer that covers a periphery of the core and includes a zinc. The covering layer includes an outermost layer consisting of an ε-phase of a copper-zinc based alloy. The outermost layer has a Cu concentration of 12 to 20 mass % and a variation range within 5 mass % in the Cu concentration in a longitudinal direction of the electrode wire.