ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,037, issued on April 21, was assigned to ASSA ABLOY Americas Residential Inc. (New Haven, Conn.).

"Drill resistant lock cylinder and method of manufacturing" was invented by Hanna Farag (Jurupa Valley, Calif.), James Lin (Laguna Niguel, Calif.) and Mark Bloom (Ladera Ranch, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of forming lock cylinder plug using metal injection molding includes injecting a material that has a metal component and a plastic component into a mold. The metal component of the material is at least partially steel. The method includes molding the material into a lock cylinder plug having a key way passage. The me...