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:
Apr. 23, 2019
Filed:
Feb. 13, 2009
Soichiro Sugawara, Zama, JP;
Hiroshi Sakai, Sagamihara, JP;
Philip Hartmann, Berlin, DE;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
ATOTECH DEUTSCHLAND GMBH, Berlin, DE;
Abstract
The present invention is to provide a chrome-plated part having a corrosion resistance in normal and specific circumstances and not requiring additional treatments after chrome plating, and to provide a manufacturing method of such a chrome plated part. The chrome-plated partincludes: a substrate; a bright nickel plating layerformed over the substrate; a noble potential nickel plating layerformed on the bright nickel plating layer. An electric potential difference between the bright nickel plating layerand the noble potential nickel plating layeris within a range from 40 mV to 150 mV. The chrome-plated partfurther includes: a trivalent chrome plating layerformed on the noble potential nickel plating layerand having at least any one of a microporous structure and a microcrack structure.