US Patent Issued to 3M Innovative Properties on Oct. 20 for "Precision shaped grain abrasive rail grinding tool and manufacturing method therefor" (Austrian, American Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,766,660, issued on Oct. 20, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Precision shaped grain abrasive rail grinding tool and manufacturing method therefor" was invented by Maiken Givot (St. Paul, Minn.), Michael Bartlmae (Osterreich, Austria), Andrea V. Kirschner (Villach, Austria), Erwin Ebner (Feistritz an der Drau, Austria) and Walter Flaschberger (Villach, Austria).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides improved rail grinding tools. Precision-shaped grains (PSGs), such as PSGs manufactured by 3M(R) company, provide significant performance improvement in resin-bond and vitrified bond grind...