ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,182, issued on Oct. 27, was assigned to Seiko Epson Corp. (Tokyo).

"Medium transport device and image reading apparatus" was invented by Koya Matsuyama (Kitakyushu, Japan) and Seiji Takamatsu (Kitakyushu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ultrasonic detection unit includes a transmission sensor chip, a reception sensor chip, a transmission substrate provided with the transmission sensor chip, and a reception substrate provided with the reception sensor chip. The reception substrate is provided with an amplifier that amplifies a reception signal of an ultrasonic wave received by the reception sensor chip, and a shielding member ...