ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,706,444, issued on Aug. 11, was assigned to Mitsubishi Electric Corp. (Tokyo).
"Optical semiconductor device and method for producing same" was invented by Kazuyuki Onoe (Tokyo), Tsutomu Yamaguchi (Tokyo) and Yohei Hokama (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical semiconductor device according to the present disclosure includes: a first-conductivity-type semiconductor substrate having a projecting portion; second-conductivity-type intermediate layers formed on both sides of the projecting portion above the semiconductor substrate; a stripe-shaped mesa structure formed of a first-conductivity-type first cladding layer, an active la...