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:
May. 12, 1987
Filed:
Oct. 15, 1985
Applicant:
Inventor:
Hyman Chessin, Brick, NJ (US);
Assignee:
M&T Chemicals Inc., Woodbridge, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 34 ; 204 51 ;
Abstract
An activation solution is provided for forming adherent chromium electrodeposits on stainless steel substrates from high energy efficient chromium baths. The activation solution suitably is a mixture of chromium acid, and chloride ion, or a mixture of chloride and bromide ions. A preferred solution contains 0.15M chromic acid and 0.14M chloride ion, or with 0.025M bromide ion, and the stainless steel is anodically etched in the activation solution at about 55.degree. C.