ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,669, issued on March 18, was assigned to ALPHA CHEMICAL SERVICES INC. (Stoughton, Mass.).
"Cleaning compositions with pH indicators and methods of use" was invented by Noah Hershey (Arlington, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides acidic or basic cleaning compositions for use in cleaning food and beverage industry processing equipment and pharmaceutical and cosmetic industry processing equipment wherein the compositions of the invention comprise a food-equipment-safe acidic or basic cleaning compound and a food-equipment-safe colorimetric indicator of pH to show the desired acid or basic conditions duri...