Patents by Inventor Koji Midzuishi

Koji Midzuishi 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).

  • Patent number: 6113686
    Abstract: A method and apparatus for growing and manufacturing a single crystal according to a so-called Czochralski (CZ) method. A seed crystal 12 is connected to a tip end of a wire 41a as a hanging member 41 to pull and form a single crystal part 15, arm-shaped members 44a of a lifting jig 44 are engaged in a recess 16 of a corrugated portion 14 formed on the single crystal part 15 during the pulling operation, the pulling speeds of both of the arm-shaped members 44a and wire 41a are synchronously controlled to provide smooth transfer between the arm-shaped members 44a and wire 41a, whereby the single crystal part 15 is pulled always at a constant pulling speed. In particular, a heavy-weight single crystal can be safely pulled and formed without any dislocation therein while minimizing an impact force applied to the crystal.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: September 5, 2000
    Assignee: Shin-Etsu Handotai Co., Ltd.
    Inventors: Eiichi Iino, Yasushi Nakamura, Seiichiro Otsuka, Koji Midzuishi, Masanori Kimura, Hirotoshi Yamagishi