Patents by Inventor Tosihisa Nakata

Tosihisa Nakata 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).

  • Jig for clamp-positioning single crystal ingot
    Patent number: 5205080
    Abstract: A jig is provided for accurately and easily positioning a single crystal ingot with respect to the clamp rotary shafts of a device for grinding the peripheral surface of the ingot. The jig includes male positioning fixtures 10L and 10R and female positioning fixtures 32L and 32R. In the male positioning fixtures, negative-pressure suction cups 105 made of an elastic or viscoelastic material and blocks 101 at the backs of the cups are integrally formed with each other. In the female positioning fixtures, holes 325 are formed at the ends of the clamp rotary shafts 30L and 30R of the grinding device. The male positioning fixtures are accommodated in the holes, and the blocks are fitted into the holes so as to be concentric with the clamp rotary shafts.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: April 27, 1993
    Assignee: Shin-Etsu Handotai Company, Limited
    Inventors: Hiroyuki Ibe, Tosihisa Nakata