ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,436,414, issued on Oct. 7, was assigned to DENSO Corp. (Kariya, Japan), TOYOTA JIDOSHA K.K. (Toyota, Japan) and MIRISE Technologies Corp. (Nisshin, Japan).

"Optical phase modulator" was invented by Taku Suzuki (Nisshin, Japan), Tatsuya Yamashita (Nisshin, Japan), Naoya Take (Nisshin, Japan) and Masashige Sato (Nisshin, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical phase modulator includes a rib part extending in an extending direction. The rib part includes an N-type first rib portion and a P-type second rib portion arranged in a width direction to have a PN junction therebetween along the extending direction. An N-type first slab porti...