US Patent Issued to TOKIN on March 3 for "Method of manufacturing a dust core and the dust core" (Japanese Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,567,538, issued on March 3, was assigned to TOKIN Corp. (Shiroishi, Japan).

"Method of manufacturing a dust core and the dust core" was invented by Makoto Yamaki (Sendai, Japan), Naoto Onishi (Sendai, Japan) and Akiri Urata (Sendai, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dust core is manufactured by compacting magnetic particles in a metal die while heating the magnetic particles at a predetermined temperature in the metal die. At least some of the magnetic particles are coated with coating material. The metal die comprises a die, an upper punch and a lower punch. The upper punch is positioned above the lower punch in an up-down directio...