ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,287, issued on March 17, was assigned to CANON ELECTRON TUBES & DEVICES Co. LTD. (Ottawara, Japan).

"High-frequency coaxial input coupler including a transmission window that couples a waveguide to an acceleration cavity" was invented by Hideharu Takahashi (Edogawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to one embodiment, an high-frequency input coupler installed between a waveguide and an acceleration cavity to input high-frequency waves from the waveguide to the acceleration cavity, a coaxial waveguide conversion unit includes a high-frequency transmission window structure connection unit that connects the high-frequency ...