ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,672, issued on May 27, was assigned to RICOH COMPANY LTD. (Tokyo).

"Liquid discharge head, liquid discharge device, liquid discharge apparatus, and liquid circulation apparatus" was invented by Yu Watanabe (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid discharge head includes: multiple nozzles though which a liquid is to be discharged, each of the multiple nozzles having a nozzle diameter; a multiple pressure chambers respectively communicating with the multiple nozzles; a supply common chamber communicating with each of the multiple pressure chambers to supply the liquid to each of the multiple pressure chambers; a collect...