ALEXANDRIA, Va., June 4 -- United States Patent no. 12,324,187, issued on June 3, was assigned to DENSO Corp. (Kariya, Japan).
"Switching element" was invented by Jun Saito (Toyota, Japan), Keita Kataoka (Nagakute, Japan), Yusuke Yamashita (Nagakute, Japan), Yukihiko Watanabe (Nagakute, Japan), Katsuhiro Kutsuki (Nagakute, Japan) and Yasushi Urakami (Kariya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A switching element includes a semiconductor substrate having: an n-type drift region in contact with each of gate insulating films on a bottom surface and side surfaces of each of the trenches; a p-type body region in contact with the gate insulating films on the side surfaces of each of the trenches ...