US Patent Issued to DENSO, TOYOTA JIDOSHA, MIRISE Technologies, QD LASER on Feb. 10 for "Optical semiconductor device and semiconductor laser device" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,548,983, issued on Feb. 10, was assigned to DENSO Corp. (Kariya, Japan), TOYOTA JIDOSHA K.K. (Toyota, Japan), MIRISE Technologies Corp. (Nisshin, Japan) and QD LASER Inc. (Kawasaki, Japan).

"Optical semiconductor device and semiconductor laser device" was invented by Hiroyuki Tarumi (Nisshin, Japan), Yuki Kamata (Nisshin, Japan), Keizo Takemasa (Kawasaki, Japan), Kenichi Nishi (Kawasaki, Japan) and Yutaka Ohnishi (Kawasaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical semiconductor device includes an active layer having a plurality of quantum dot layers. The plurality of quantum dot layers includes at least one quantum dot player dope...