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:
Mar. 26, 2019
Filed:
Aug. 19, 2014
Dipsol Chemicals Co., Ltd., Chuo-ku, Tokyo, JP;
Honda Motor Co., Ltd., Minato-ku, Tokyo, JP;
Yasuhiro Kato, Funabashi, JP;
Toshiki Inomata, Koshigaya, JP;
Manabu Inoue, Katsushika, JP;
Hiroyuki Yoshida, Wako, JP;
Hiroshi Hirayama, Wako, JP;
Shinsuke Mochizuki, Wako, JP;
Toshiyasu Nagai, Wako, JP;
DIPSOL CHEMICALS CO., LTD., Tokyo, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
Provided is a black coupling member for vehicles, comprising a trivalent chromium black chemical conversion film and a black coating film upon the trivalent chromium black chemical conversion film, on the surface of a zinc-plated metal substrate. The trivalent chromium black chemical conversion film is formed using a hexavalent chromium-free trivalent chromium black chemical conversion treatment solution having a Zn ion concentration of no more than 20 g/L. The lightness (L) of the trivalent chromium black chemical conversion film is no more than 33. The black coating film includes a black chemical conversion component, a modified organopolysiloxane, and a friction coefficient-adjustment component. The black chemical conversion component content is 2-25 wt % relative to 100 wt % of the black coating film. The lightness (L) is no more than 28.