ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,460, issued on June 16, was assigned to BROTHER KOGYO K.K. (Nagoya, Japan).
"Liquid discharge system and filter state determination method" was invented by Yuta Oshitani (Nagoya, Japan), Akihiro Kobayashi (Yokkaichi, Japan) and Kenta Hasebe (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The liquid discharge system includes a head configured to discharge the liquid, a supply tank, a discharge tank, a pump, a first filter, a second filter, a first liquid amount sensor configured to detect an amount of the liquid stored in the supply tank, a second liquid amount sensor configured to detect an amount of the liquid stored in the discharge ...