Patents by Inventor Nobuto Kageyama

Nobuto Kageyama 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
    Patent number: 8879592
    Abstract: A semiconductor laser bar 2 is mounted onto a liquid-cooled heat sink 1. A molybdenum reinforcement member 3 is fixed onto the surface opposite to the surface on which the semiconductor laser module 2 is mounted. The molybdenum has a linear expansion coefficient less than that of the heat sink 1. Sub-mounts are preferably made of a Cu—W alloy, more preferably of the reinforcement member 3 molybdenum. In this case, the stresses that are imposed on the heat sink 1 when being expanded or contracted can cancel each other out.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: November 4, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Nobuto Kageyama, Hirofumi Miyajima, Hirofumi Kan
  • SEMICONDUCTOR LASER DEVICE
    Publication number: 20130279530
    Abstract: A semiconductor laser bar 2 is mounted onto a liquid-cooled heat sink 1. A molybdenum reinforcement member 3 is fixed onto the surface opposite to the surface on which the semiconductor laser module 2 is mounted. The molybdenum has a linear expansion coefficient less than that of the heat sink 1. Sub-mounts are preferably made of a Cu—W alloy, more preferably of the reinforcement member 3 molybdenum. In this case, the stresses that are imposed on the heat sink 1 when being expanded or contracted can cancel each other out.
    Type: Application
    Filed: October 12, 2011
    Publication date: October 24, 2013
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Nobuto Kageyama, Hirofumi Miyajima, Hirofumi Kan