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. 01, 1980
Filed:
Nov. 20, 1978
Applicant:
Inventors:
Donald J Barclay, Olivers Battery, GB;
James M Vigar, Olivers Battery, GB;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 36 ; 134-2 ;
Abstract
A method for brightening an electroplated chromium deposit wherein the deposited chromium is contacted with a solution having a constituent capable of forming complexes with chromium hydroxide species and of detaching the complexes so formed from the surface of an electroplated deposit. Preferably the solution is an alkaline ferricyanide solution or a solution of sodium dichromate in sulphuric acid.