ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,556, issued on Oct. 21, was assigned to NICHIA Corp. (Anan, Japan).
"Method of producing composite material" was invented by Shoichi Yamada (Anan, Japan) and Takeshi Kihara (Tokushima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of producing a composite material, the method including: preparing a mixed powder of diamond particles and copper powder particles; and generating a composite material containing diamond and copper from the mixed powder by pulsed electric current sintering with a pressure of 5 MPa or greater and 100 MPa or less applied to the mixed powder, and the mixed powder maintained at a temperature equal to or higher ...