ALEXANDRIA, Va., April 2 -- United States Patent no. 12,265,257, issued on April 1, was assigned to TDK Corp. (Tokyo).
"Optical modulator" was invented by Kenji Nagase (Hong Kong), Hiroshi Take (Hong Kong), Anthony Reymund Melad Binarao (Hong Kong) and Cheng Bu Heng (Hong Kong).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical modulator includes a substrate; an electro-optical material layer formed on a predetermined region of the substrate; a buffer layer formed on the substrate which is provided so as to cover the electro-optical material layer; and an electrode formed on the buffer layer. The electro-optical material layer has a RF portion optical waveguide which is applied with a modulation signal...