ALEXANDRIA, Va., July 7 -- United States Patent no. 12,677,429, issued on July 7, was assigned to DYNEX SEMICONDUCTOR Ltd. (Lincolnshire, Great Britain) and ZHUZHOU CRRC TIMES SEMICONDUCTOR Co. LTD (Hunan, China).

"IGBT device" was invented by Luther-King Ngwendson (Lincoln, Great Britain) and Ian Deviny (Lincoln, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "We herein describe a gate controlled semiconductor device having a plurality of gate trenches, in which the plurality of gate trenches are laterally spaced from each other in a first dimension, current flows in a second dimension substantially transverse to the first dimension, and the plurality of gate trenches each extend in a third dim...