ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,751, issued on Oct. 21, was assigned to Ricoh Co. Ltd. (Tokyo).

"Liquid discharge apparatus, liquid exchange method, and recording medium" was invented by Masanori Igarashi (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid discharge apparatus includes: a discharge unit to discharge a liquid; multiple liquid containers to contain the liquid having an identical color to each other; multiple insertion ports to which the multiple liquid containers are respectively detachably attachable; an acquisition unit to acquire information of the multiple liquid containers attached to the multiple insertion ports; a display; and circuitry co...