01.06.15
US Patent No. 8,895,491 B2; Ecolab USA Inc. has patented a method of cleaning floors that entails forming a solution by mixing water and a concentrated acidic cleaner. The cleaner is comprised of an acid selected from the group consisting of citric, isocitric, tartaric, malic, monohydroxyacetic, acetic, gluconic and salts and mixtures thereof; a buffering salt; a surfactant; amine; and caustic.