ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,180, issued on Nov. 11, was assigned to KYOCERA Document Solutions Inc. (Osaka, Japan).

"Signal generation device, liquid ejection device, and signal generation method capable of suppressing extension of liquid ejection interval" was invented by Daichi Kawano (Osaka, Japan), Takashi Inoue (Osaka, Japan), Keisuke Maeyama (Osaka, Japan), Tatsuya Nakagawa (Osaka, Japan), Satoshi Morimoto (Osaka, Japan) and Minori Yamamoto (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A signal generation device includes a first signal generation portion and a second signal generation portion. The first signal generation portion, based on a reference signa...