Patents by Inventor Yoshihiko Ohtsuki

Yoshihiko Ohtsuki 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).

  • Device for holding a sheet-like sample
    Patent number: 4448404
    Abstract: A device for holding a sheet-like sample includes table means including a reference surface capable of intimately contacting the surface of the sample and a groove formed in the reference surface and capable of being covered by the surface of the sample during the intimate contact, the groove being formed in the shape of a continuous spiral having its center substantially at the center of the reference surface, and exhaust means for exhausting the air in the groove covered by the surface of the sample.
    Type: Grant
    Filed: June 2, 1983
    Date of Patent: May 15, 1984
    Assignee: Nippon Kogaku K. K.
    Inventors: Koji Ogawa, Yoshihiko Ohtsuki, Yoshihiko Kudo, Hideo Maeda, Naoto Kihara