Patents by Inventor Takaaki Nakahashi

Takaaki Nakahashi 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 and optical pickup apparatus having the device
    Publication number: 20060262820
    Abstract: A semiconductor laser device has a semiconductor laser element, a starting mirror and a signal photodetector mounted on a surface of laminate ceramic package which is formed by layering a plurality of ceramic sheets having mutually different conductive patterns. The semiconductor laser device and an optical pickup apparatus having the device allow to eliminate the restrictions on arrangement of wire-bonded electrodes and wiring layout and to reduce the adverse effect of heat generated in the photodetector on the semiconductor laser element.
    Type: Application
    Filed: May 9, 2006
    Publication date: November 23, 2006
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takashi Itoh, Takaaki Nakahashi, Terukazu Takagi