Patents by Inventor Masahiro Mashimo

Masahiro Mashimo 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).

  • Apparatus for producing Czochralski-grown single crystals
    Patent number: 5106593
    Abstract: An apparatus for producing a single crystal grown by Czochralski method includes a winding drum disposed in a case for winding up and down a flexible pull wire, a power transmission mechanism for driving the winding drum, and a bearing unit for rotatably supporting the winding drum. The power transmission mechanism and the bearing unit are disposed outside the case and isolated from the furnace atmosphere surrounding the winding drum and the pull wire in the case. With this construction, metallic dust produced by abrasion from the power transmission mechanism and the bearing unit has no influence on the condition of the furnace atmosphere and hence the quality of a single crystal being pulled upwardly by the pull wire.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: April 21, 1992
    Assignee: Shin-Etsu Handotai Co., Ltd.
    Inventors: Koji Mizuishi, Michiaki Oda, Yasushi Nakamura, Seiichiro Ohtsuka, Atsushi Shiozawa, Fumio Yamada, Masahiro Mashimo, Tooru Ohara, Eizi Namiki