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:
Aug. 16, 1994
Filed:
Aug. 08, 1991
Volker Brucken, Konigsstein, DE;
Werner Huppatz, Bonn, DE;
Abstract
Cathodic corrosion protection for surfaces of metallic substrates is provided by carrying out electrolysis, switching off the electrolysis, observing a control voltage and switching on the electrolysis again when the control voltage equals a specified critical voltage. A counterelectrode, which does not corrode significantly by an electrolyte, is provided as an anode. A surface of a substrate services as a cathode. A reference electrode provides a constant electrochemical potential relative to the electrolyte. A potentiostat brings about the electrolysis in the electrolyte. A controller switches on and off the electrolyzing voltage based on a value of the control voltage relative to the specified critical voltage.