ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,767,905, issued on Oct. 20, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).
"Composition for making compressed cleaning articles" was invented by Chunjie Zhang (Shoreview, Minn.), Yifan Zhang (Woodbury, Minn.), Douglas M. Williams (Stillwater, Minn.), Siwei Leng (Woodbury, Minn.) and Sedat Gunes (Minneapolis).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is a cleaning composition including a binder, a gas generator, an acid, and at least about 0.1% water. The cleaning article has an aged Shore A hardness of at least about 10, an aged Shore D hardness of up to about 100, and a dissolution time of between about 1 minu...