ALEXANDRIA, Va., July 30 -- United States Patent no. 12,374,869, issued on July 29, was assigned to KEYENCE Corp. (Osaka, Japan).
"Static eliminator and ion balance control method" was invented by Saeyoung Yang (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To appropriately control both long-term ion balance and short-term ion balance. A current flowing between an earth and a static eliminator via a ground electrode is detected, and feedback control is executed on a negative polarity high voltage power supply such that the current becomes a target current. Furthermore, a front wire mesh functioning as a detection electrode different from the ground electrode is arranged at a position where posi...