ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,731,715, issued on Sept. 8, was assigned to Mitsubishi Electric Corp. (Tokyo) and Nunome Electric Co. Ltd. (Nagoya, Japan).
"Coil device and power conversion device" was invented by Takashi Kumagai (Tokyo), Kazuaki Fukui (Tokyo), Yoshiaki Yamamoto (Tokyo), Kazufumi Tanaka (Tokyo), Kenji Asai (Nagoya, Japan), Kazuya Ohashi (Nagoya, Japan) and Koji Ishihara (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A transformer includes a core group and a winding group. Each of a plurality of winding layers penetrates through a plurality of closed magnetic circuits formed by a plurality of cores. When viewed from the top, the cores are disposed with s...