US Patent Issued to 3M Innovative Properties on July 29 for "Porous abrasive article" (Minnesota, Wisconsin, California Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,370,647, issued on July 29, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Porous abrasive article" was invented by Michael J. Annen (Hudson, Wis.), Deborah J. Eilers (Hastings, Minn.), Chainika Jangu (Mountain View, Calif.), Caroline E. Morel (St. Paul, Minn.) and Kathleen S. Shafer (Woodbury, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An abrasive article comprising an attachment layer and an abrasive layer. The attachment layer comprises a porous backing having a first major surface, an opposed second major surface, and a first plurality of voids extending from the first major surface to the second major surface. The abrasi...