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:
Jul. 20, 2004
Filed:
May. 21, 2001
Boris A. Miksic, North Oaks, MN (US);
Alla Furman, Shoreview, MN (US);
Michael Hobday, Lino Lakes, MN (US);
Jessica Jackson, Hudson, WI (US);
Zvjezdana Matuzic, Duga Resa, HR;
Cortec Corporation, St. Paul, MN (US);
Abstract
Method and formulation for providing multiple sources of migratory corrosion inhibitors to metallic reinforcements embedded in concrete through addition of the inhibitors to the concrete mix. First and second sources of inhibitors are provided with the first source consisting of a powdered corrosion inhibitor consisting of sodium sebacate, potassium sebacate, dicyclohexylammonium nitrite, sodium nitrite, zinc gluconate, sodium gluconate, and calcium nitrite. The second source consists of an in-situ coextruded blend of a migratory corrosion inhibitor in a resin matrix, the second source consisting of a coextruded blend which includes an alkali metal salt of a dibasic acid containing from 8 to 12 carbon atoms together with migratory corrosion inhibitors consisting of alkali metal gluconates, zinc gluconate, and cyclohexylammonium benzoate, with the alkali metal in the inhibitors being sodium, potassium, or calcium. The total amount of corrosion inhibitor in concrete is between about 16 and 24 ounces per cubic yard, with the first source being between 70% and 80% by weight of the total corrosion inhibitor.