Patents by Inventor Takuroh Ishikura

Takuroh Ishikura 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 laser device manufacturing method and semiconductor laser device
    Patent number: 7629185
    Abstract: A semiconductor laser device manufacturing method includes, sequentially, a first aging step S1, a first inspection step S2, a mounting step S3, a second aging step S4 and a second inspection step S5. Since the first aging step S1 on a semiconductor laser chip with a high-temperature direct current conduction is performed before the mounting step S3, threshold current and drive current of the semiconductor laser chip before mounting can be reduced.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: December 8, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tadashi Takeoka, Takuroh Ishikura
  • Semiconductor laser device manufacturing method and semiconductor laser device
    Publication number: 20060121633
    Abstract: A semiconductor laser device manufacturing method includes, sequentially, a first aging step S1, a first inspection step S2, a mounting step S3, a second aging step S4 and a second inspection step S5. Since the first aging step S1 on a semiconductor laser chip with a high-temperature direct current conduction is performed before the mounting step S3, threshold current and drive current of the semiconductor laser chip before mounting can be reduced.
    Type: Application
    Filed: November 8, 2005
    Publication date: June 8, 2006
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tadashi Takeoka, Takuroh Ishikura