Patents by Inventor Masakazu Kashima

Masakazu Kashima 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).

  • Sealing device for filters
    Patent number: 5314516
    Abstract: A device for sealing a clearance between a ceiling frame and a filter frame placed on the ceiling frame. The ceiling frame includes closed tubes and has an upper wall formed with holes for holding the interior of the ceiling frame in communication with a groove formed in the bottom face of the filter frame. The interior of the ceiling frame is given a negative pressure by suction.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: May 24, 1994
    Assignee: Taikisha, Ltd.
    Inventor: Masakazu Kashima