Patents by Inventor Yasushi Kozuki

Yasushi Kozuki 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 chip with a porous single crystal layer and manufacturing method of the same
    Patent number: 7632696
    Abstract: A semiconductor chip including a semiconductor substrate provided with a semiconductor device region and a porous single crystal layer, where the semiconductor device region is formed on the main surface portion of the semiconductor substrate, and the porous single crystal layer is formed in an inner region on the backside of the semiconductor substrate, and is comprised of erosion holes extending continuously from the backside of the semiconductor substrate in an inward direction of the semiconductor substrate, oxide films formed on inner surfaces of the erosion holes, and a single crystal portion.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: December 15, 2009
    Assignee: Elpida Memory, Inc.
    Inventors: Kiyonori Oyu, Koji Hamada, Kensuke Okonogi, Hideharu Miyake, Yasushi Kozuki, Masaharu Watanabe
  • Semiconductor chip with a porous single crystal layer and manufacturing method of the same
    Publication number: 20060249075
    Abstract: A semiconductor chip including a semiconductor substrate provided with a semiconductor device region and a porous single crystal layer, where the semiconductor device region is formed on the main surface portion of the semiconductor substrate, and the porous single crystal layer is formed in an inner region on the backside of the semiconductor substrate, and is comprised of erosion holes extending continuously from the backside of the semiconductor substrate in an inward direction of the semiconductor substrate, oxide films formed on inner surfaces of the erosion holes, and a single crystal portion.
    Type: Application
    Filed: March 10, 2006
    Publication date: November 9, 2006
    Inventors: Kiyonori Oyu, Koji Hamada, Kensuke Okonogi, Hideharu Miyake, Yasushi Kozuki, Masaharu Watanabe