ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,461, issued on June 24, was assigned to Robert Bosch GmbH (Stuttgart, Germany).
"Electric tool and three-phase electric motor control device and method thereof" was invented by Shupei Li (Hangzhou, China) and Mengsi Ye (Hangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric tool, a control device and a method for a three-phase motor thereof is disclosed. The control device includes a switching unit that has a first switching unit and a second switching unit. The first switching unit and the second switching unit each includes a plurality of switching elements corresponding to respective phases of a driving circuit of the three-ph...