Patents Assigned to Tsugunori Okumura
  • Semiconductor laser
    Patent number: 4648095
    Abstract: Solid phase reaction products are employed as reflecting planes of a semiconductor laser facing each other with an active layer in between, which significantly improve its performance and productivity.
    Type: Grant
    Filed: July 24, 1984
    Date of Patent: March 3, 1987
    Assignees: Furukawa Electric Co., Ltd., Toshiaki Ikoma, Tsugunori Okumura
    Inventors: Tamotsu Iwasaki, Toshiaki Ikoma, Tsugunori Okumura