ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,670, issued on May 19, was assigned to Alps Alpine Co. Ltd. (Tokyo).
"Antenna device" was invented by Yuanzhu Dou (Miyagi-ken, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An antenna device includes: a waveguide; a transmission antenna disposed on the same side as a first opening in the waveguide, the transmission antenna transmitting a radio wave through the waveguide; a reception antenna disposed on the same side as the first opening in the waveguide, the reception antenna receiving a radio wave through the waveguide; and a lens, disposed on the same side as a second opening in the waveguide, through which the radio wave transmitted from th...