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:
Sep. 19, 2017
Filed:
Mar. 24, 2009
Roderick D. Herdman, Staffordshire, GB;
Stacey Handy, West Midlands, GB;
Trevor Pearson, West Midlands, GB;
Toshiyuki Yamamoto, Chiba-Ken, JP;
Kotaro Ishiwata, Tokyo, JP;
Masahiro Hara, Kanagawa-Ken, JP;
Tatsuya Nishiyama, Kanagawa-Ken, JP;
Roderick D. Herdman, Staffordshire, GB;
Stacey Handy, West Midlands, GB;
Trevor Pearson, West Midlands, GB;
Toshiyuki Yamamoto, Chiba-Ken, JP;
Kotaro Ishiwata, Tokyo, JP;
Masahiro Hara, Kanagawa-Ken, JP;
Tatsuya Nishiyama, Kanagawa-Ken, JP;
Other;
Abstract
The invention consists of a chromium electroplating solution comprising a chromium electroplating solution comprising: (1) a water soluble trivalent chromium salt; (2) at least one complexant for trivalent chromium ions; (3) a source of hydrogen ions sufficient to create a pH of from 2.8-4.2; (4) a pH buffering compound; and (5) a sulfur-containing organic compound. The chromium electroplating solution is usable in a method for producing an adherent metallic coating on a decorative article, such coating having enhanced resistance to corrosion in environments containing calcium chloride.