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:
May. 05, 2015
Filed:
Jul. 05, 2010
Yasuharu Yoshimura, Toyama, JP;
Takuya Koizumi, Toyama, JP;
Koichi Mikado, Toyama, JP;
Takahiro Fukuyama, Toyama, JP;
Atsushi Ogihara, Toyama, JP;
Yasuharu Yoshimura, Toyama, JP;
Takuya Koizumi, Toyama, JP;
Koichi Mikado, Toyama, JP;
Takahiro Fukuyama, Toyama, JP;
Atsushi Ogihara, Toyama, JP;
YKK Corporation, , JP;
Abstract
A copper-zinc alloy product of the invention contains zinc in an amount of higher than 35% by weight and 43% by weight or less and has a two-phase structure of an α-phase and a β-phase. Further, the ratio of the β-phase in the copper-zinc alloy is controlled to be higher than 10% and less than 40% and the crystal grains of the α-phase and the β-phase are crushed into a flat shape and arranged in a layer shape through cold working. According to the copper-zinc alloy product, it is possible to decrease the copper content and to appropriately secure the strength and cold workability by appropriately controlling the ratio of the β-phase.