ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,614, issued on Sept. 15, was assigned to TYROLIT-SCHLEIFMITTELWERKE SWAROVSKI K.G. (Schwaz, Austria).

"Method for producing abrasive particles" was invented by Martin Hirschmann (Wattenberg, Austria).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing abrasive particles includes preparing a starting mixture containing at least aluminium hydroxide, which mixture can be converted at least into aluminium oxide by means of heat treatment; extruding the starting mixture to form an extrudate; separating the extrudate into intermediate particles; and heat-treating the intermediate particles. The intermediate particles are converted into a...