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:
Oct. 06, 1981
Filed:
Jun. 09, 1980
Applicant:
Inventor:
James M Vigar, Winchester, GB;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ; C25D / ;
U.S. Cl.
CPC ...
428667 ; 204 41 ; 204 51 ;
Abstract
A process for plating thick chromium coatings for engineering applications comprises depositing a thin initial layer from a low concentration chromium III/thiocyanate bath and depositing the bulk of the remaining thickness from a relatively higher concentration chromium III/thiocyanate bath. Deposits produced by this two-stage process are more cohesive and smoother than those obtainable by plating the entire thickness from the high concentration bath alone.