ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,489, issued on March 18, was assigned to TMEIC Corp. (Chuo-ku, Japan).
"Uninterruptible power supply system" was invented by Ryogo Imanishi (Chuo-ku, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An uninterruptible power supply system that includes a selection unit that selects, of a plurality of uninterruptible power supply devices, a necessary number of uninterruptible power supply devices to supply power to a load. Each of the uninterruptible power supply devices performs, when this device is selected, an operating action of supplying power to the load, when this device is not selected, a standby action of not supplying power to the load,...