Patents by Inventor Takashi Jyonai

Takashi Jyonai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Semiconductor light emitting device and semiconductor light emitting apparatus
    Patent number: 7310362
    Abstract: A semiconductor light emitting device comprises: a stacked body of semiconductor including an active layer; a ridge stripe protruding and extending in a first direction on a first major surface of the stacked body; dummy ridges protruding on the first major surface of the stacked body on both sides of the ridge stripe; and a slit formed on the first major surface of the stacked body. The ridge stripe includes at least a portion of a waveguide that guides light emission generated by injected current. The slit extends along a second direction which crosses the first direction, and divides one of the dummy ridges.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: December 18, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiyuki Terada, Takashi Jyonai
  • Semiconductor light emitting device and semiconductor light emitting apparatus
    Publication number: 20050232324
    Abstract: A semiconductor light emitting device comprises: a stacked body of semiconductor including an active layer; a ridge stripe protruding and extending in a first direction on a first major surface of the stacked body; dummy ridges protruding on the first major surface of the stacked body on both sides of the ridge stripe; and a slit formed on the first major surface of the stacked body. The ridge stripe includes at least a portion of a waveguide that guides light emission generated by injected current. The slit extends along a second direction which crosses the first direction, and divides one of the dummy ridges.
    Type: Application
    Filed: February 1, 2005
    Publication date: October 20, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshiyuki Terada, Takashi Jyonai