ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,643, issued on June 10, was assigned to Sumitomo Electric Industries Ltd. (Osaka, Japan).
"Light modulator" was invented by Naoya Kono (Osaka, Japan), Hajime Tanaka (Osaka, Japan) and Naoki Fujiwara (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The light modulator includes a substrate having a main surface including a first area, a second area, and a third area, a first III-V compound semiconductor layer of a first conductivity-type provided on the first area, a second III-V compound semiconductor layer of a first conductivity-type or a second conductivity-type provided on the second area, a core provided on the third area and includi...