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:
Feb. 17, 2015
Filed:
Mar. 22, 2011
Yasushi Masago, Shimonoseki, JP;
Koichi Taira, Shimonoseki, JP;
Toshiyuki Mitsui, Kitakyushu, JP;
Junichi Kakumoto, Kitakyushu, JP;
Yasushi Masago, Shimonoseki, JP;
Koichi Taira, Shimonoseki, JP;
Toshiyuki Mitsui, Kitakyushu, JP;
Junichi Kakumoto, Kitakyushu, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe-shi, JP;
Shinko Leadmikk Co., Ltd., Kitakyushu-shi, JP;
Abstract
A mating-type connecting part can be obtained by stamping and surface-roughening a copper sheet into a predetermined shape with depressions as a plurality of parallel lines. The copper sheet then has a roughness of from 0.5 μm to 4.0 μm parallel to a sliding direction upon connection, a mean projection-depression interval of from 0.01 mm to 0.3 mm in that direction, a skewness less than 0, and a protrusion peak portion height of 1 μm or less. The copper sheet is then plated with Cu and Sn, followed by reflowing. The result is a connecting part having a Sn surface coating layer group as a plurality of parallel lines, and a Cu-Sn alloy coating layer adjacent to each side of each Sn surface coating layer.