ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,866, issued on June 23, was assigned to A.L.M.T. Corp. (Tokyo).

"Composite material" was invented by Naoya Matsuta (Toyama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite material includes: a first member containing tungsten as a primary component; a second member containing copper as a primary component, the second member being joined to the first member; and a metal containing at least one metal selected from a group consisting of titanium, zirconium, and hafnium, the metal being present in the second member, wherein a concentration of the metal is more than 0 atomic % and less than or equal to 5.0 atomic % at a location of 5 mic...