US Patent Issued to 3M Innovative Properties on March 17 for "Porous coated abrasive article and method of making the same" (Minnesota, Wisconsin Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,482, issued on March 17, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Porous coated abrasive article and method of making the same" was invented by David M. Mahli (Woodbury, Minn.), Joel A. Getschel (Osceola, Wis.), Paul D. Graham (Woodbury, Minn.), Steven J. McMan (Stillwater, Minn.), Thomas A. Mahler (Osceola, Wis.) and Charles R. Wald (Oakdale, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A porous coated abrasive article comprises a porous backing having opposed first and second major surfaces, and a porous abrasive layer disposed on the first major surface. The porous backing comprises a porous oriented thermoplastic...