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. 18, 1984
Filed:
Nov. 01, 1982
Applicant:
Inventors:
Donald J Barclay, Winchester, GB;
William M Morgan, Chandlers Ford, GB;
James M Vigar, Winchester, GB;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 51 ;
Abstract
A trivalent chromium electroplating solution containing trivalent chromium ions, a complexant, a buffer and thiocyanate ions. The thiocyanate is of a molar concentration which is lower than the molar concentration of the chromium ions, and the chromium ion concentration being lower than 0.1 M. The stability constant, K.sub.1, of the solution's chromium complex is in the range 10.sup.8 <K.sub.1 <10.sup.12 M.sup.-1.