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. 07, 1998
Filed:
Jun. 28, 1996
Seiji Kishikawa, Tokyo, JP;
Takashi Yamamoto, Tokyo, JP;
Dipsol Chemicals Co., Ltd., Tokyo, JP;
Abstract
A black chromate-treatment solution for Zn-Ni alloy plated film comprises 1 to 100 g/l of hexavalent chromium, 1 to 100 g/l of hydrochloric acid residues and/or sulfuric acid residues, 1 to 100 g/l of nitric acid residues and 1 to 100 g/l of at least one metal selected from the group consisting of iron, nickel, cobalt and copper. The chromate-treatment solution permits the formation of a uniform black chromate conversion film on a Zn-Ni alloy plated film having an Ni content ranging from 8 to 20% by weight without using any silver ions in a substantial amount and the resulting black film is excellent in corrosion resistance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile