Patents by Inventor Keizi Muramatsu

Keizi Muramatsu 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).

  • Sand-filled sealing structure between at least one tube and a tube support plate
    Patent number: 4540184
    Abstract: A sealing structure between at least one tube and a tube support plate having a hole for each tube to extend therethrough, characterized in that a ring member enclosing each tube with a space therefrom is secured to the tube support plate, a sand is filled in the space to form a cylindrical sand layer surrounding the tube, a means for preventing leakage of the sand is provided at each axial end of the sand layer.
    Type: Grant
    Filed: January 24, 1985
    Date of Patent: September 10, 1985
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Kunio Takahashi, Noriyuki Oda, Nobuyuki Kido, Keizi Muramatsu