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:
Mar. 01, 1994
Filed:
Dec. 29, 1988
Barry C Syrett, Palo Alto, CA (US);
Gerhardus H Koch, Columbus, OH (US);
Neil G Thompson, Columbus, OH (US);
Electric Power Research Institute, Inc., Palo Alto, CA (US);
Abstract
A system for preventing corrosion of a metallic surface in an environment in which a corrosive condensate with a pH of less than about 3 tends to form on the surface exposed to the environment. The system includes an absorbent lining formed from a concrete material that has a chemical resistance to a low pH and that increases the pH of the environment at the underlying metallic surface. The system further includes a counterelectrode and an electrochemical potential control means connected in electrical circuit with the metallic surface. An electrical potential is maintained upon the metallic surface sufficient to effect cathodic protection.