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:
Sep. 20, 2011
Filed:
May. 02, 2008
Kim R. Smith, Woodbury, MN (US);
Keith E. Olson, Apple Valley, MN (US);
Michael E. Besse, Golden Valley, MN (US);
Michael J. Bartelme, Eden Prairie, MN (US);
Kim R. Smith, Woodbury, MN (US);
Keith E. Olson, Apple Valley, MN (US);
Michael E. Besse, Golden Valley, MN (US);
Michael J. Bartelme, Eden Prairie, MN (US);
Ecolab USA Inc., St. Paul, MN (US);
Abstract
A warewashing composition includes a cleaning agent having a detersive amount of a surfactant, an alkaline source in an amount effective to provide a use composition having a pH of at least about 8 when the use composition is measured at a solids concentration of about 0.5 wt %, and a corrosion inhibitor in an amount sufficient for reducing corrosion of glass when the warewashing composition is combined with water of dilution at a dilution ratio of at least about 20:1 water of dilution to detergent composition o form a use composition. The corrosion inhibitor includes a salt of calcium, magnesium, or a mixture of calcium and magnesium. The salt has a water solubility of less than about 0.5 wt % in water at about 20° C. and atmospheric pressure so that the salt precipitates to form a protective layer on a substrate in contact with the use composition. A method of reducing corrosion using the warewashing composition is also disclosed.