ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,741,462, issued on Sept. 22, was assigned to CANON K.K. (Tokyo).

"Liquid ejection head substrate, liquid ejection head, and liquid ejection apparatus" was invented by Yosuke Miura (Tokyo) and Yuzuru Ishida (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A technology capable of efficiently dissipating heat in a printing element substrate with a temperature adjustment heating element mounted thereon is to be provided. A liquid ejection head substrate capable of ejecting liquid using energy generated by an energy generating element includes: a base; a first heat transfer layer configured to be installed below the energy generating element,...