ALEXANDRIA, Va., July 30 -- United States Patent no. 12,374,884, issued on July 29, was assigned to FDK Corp. (Tokyo).
"Backup power supply device" was invented by Kenji Kitamura (Tokyo), Shun Mochizuki (Tokyo) and Yosuke Saito (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A backup power supply device includes: a storage battery charged with power from an external power supply; charge switches for charging the storage batter; discharge switches that are made from a field-effect transistor and that discharge the storage battery to a load device; a control unit for controlling the charge switches and the discharge switches; and a discharge suppression section connected in series to the discharge switch...