US Patent Issued to Hitachi Industrial Equipment Systems on March 18 for "Power conversion device and metal processing device" (Japanese Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,551, issued on March 18, was assigned to Hitachi Industrial Equipment Systems Co. Ltd. (Tokyo).

"Power conversion device and metal processing device" was invented by Mizuki Nakahara (Tokyo), Hirooki Tokoi (Tokyo) and Kenji Ikeda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A power conversion device capable of shortening the time required for acceleration of a motor and a metal processing device including the power conversion device are provided. Then, a power conversion device 10 includes a converter 100 configured to convert an AC voltage from outside to a DC voltage Vo and a converter controller 107 configured to control the converter 10...