ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,307, issued on April 21, was assigned to Kulzer GmbH (Hanau, Germany).

"Dental composite material" was invented by Andreas Utterodt (Neu-Anspach, Germany), Christoph Meier (Bruchkoebel, Germany), Nelli Schoenhof (Braunfels, Germany), Jutta Schneider (Runkel, Germany), Kurt Reischl (Merenberg, Germany), Raif Kocoglu (Graevenwiesbach, Germany) and Michael Eck (Schmitten, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a polymerisable dental composite material comprising (i) 40 to 90% by weight of an inorganic filler component comprising at least one dental glass, as well as optionally at least one an amorphous metal ox...