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. 26, 1987
Filed:
Dec. 05, 1985
Clarence E Habermann, Midland, MI (US);
David S Garrett, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Metals and alloys of metals which have the property of electrolytic rectification can be coated with an anticorrosive coating by immersion in a strongly alkaline aqueous bath comprising a water soluble fluoride, a water soluble iron salt, and mixtures thereof by the application of a sufficiently high voltage to obtain spark discharge at the surface to be coated, said potential being applied between the metal or alloy to be coated utilized as an anode and a cathode immersed in the aqueous bath. A durable coating is thereby applied to the surface of said metals or alloys thereof which is resistant to a corrosive salt spray environment.