ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,921, issued on Jan. 27, was assigned to CERALOC INNOVATION AB (Viken, Sweden).

"Mineral-based panel comprising grooves and a method for forming grooves" was invented by Per Josefsson (Ramlosa, Sweden), Pontus Gamstedt (Kattarp, Sweden) and Per Nygren (Ramlosa, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mineral-based floor panel including a mineral-based core, wherein the panel includes at least one groove. The at least one groove may be provided in a rear side of the panel. There is also disclosed other such mineral-based panels, such as a building panel, a wall panel, a ceiling panel or a furniture panel. There is also disclosed a meth...