Patents by Inventor Yoshitada Motomura

Yoshitada Motomura 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).

  • High-temperature gas blower impeller with vanes made of dispersion-strengthened alloy, gas blower using such impeller, and gas circulating furnace equipped with such gas blower
    Patent number: 5480299
    Abstract: An impeller for a high-temperature gas blower suitable for a floating conveyor furnace, having vanes each formed of a dispersion-strengthened alloy which includes as a disperse or internal phase 0.1-2.0% by weight of finely divided particles of an oxide of a high melting-point metal, such as Y.sub.2 O.sub.3, Ce.sub.2 O.sub.3, ZrO.sub.2, Al.sub.2 O.sub.3 and Gd.sub.2 O.sub.3, preferably dispersed in an austenite matrix or external phase of Cr, Fe, Al, Ti and Ni. A gas blower having such impeller, and a furnace using such gas blower are also disclosed.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: January 2, 1996
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Yoshitada Motomura, Hiroshi Tawara, Kenji Tsukuta, Tomohito Iikubo
  • High-temperature gas blower impeller with vanes made of dispersion-strengthened alloy, gas blower using such impeller, and gas circulating furnace equipped with such gas blower
    Patent number: 5372499
    Abstract: An impeller for a high-temperature gas blower suitable for a floating conveyor furnace, having vanes each formed of a dispersion-strengthened alloy which includes as a disperse or internal phase 0.1-2.0% by weight of finely divided particles of an oxide of a high melting-point metal, such as Y.sub.2 O.sub.3, Ce.sub.2 O.sub.3, ZrO.sub.2, Al.sub.2 O.sub.3 and Cd.sub.2 O.sub.3, preferably dispersed in an austenite matrix or external phase of Cr, Fe, Al, Ti and Ni. A gas blower having such impeller, and a furnace using such gas blower are also disclosed.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: December 13, 1994
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Yoshitada Motomura, Hiroshi Tawara, Kenji Tsukuta, Tomohito Iikubo