ALEXANDRIA, Va., June 17 -- United States Patent no. 12,314,022, issued on May 27, was assigned to TDK Corp. (Tokyo).
"Power management device, upper power management device, and power management method" was invented by Masao Ichi (Tokyo), Shingo Suzuki (Tokyo), Takuma Mitsunaga (Tokyo), Katsuo Naoi (Tokyo) and Hisakazu Uto (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power management device includes a control unit that controls a converter capable of bidirectionally converting between an external bus voltage and an internal bus voltage in a first power feeding system. When an amount of stored electric power of the first power feeding system is less than a first storage threshold value, the contro...