Patents by Inventor Youji Kawatani

Youji Kawatani 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).

  • Patent number: 7749464
    Abstract: A plate type catalytic reactor in which components of a starting material gas react comprises a plurality of pairs of heat transfer plates, each pair being formed of two sheets of corrugated plates joined to each other and each pair having a plurality of interior heat transfer medium flow passages, that are arranged so that projected surface parts and recessed surface parts of the corrugated plates of adjacent heat transfer plates are opposed to each other and so that the plurality of pairs of corrugated plates placed in contiguous non-contacting relationship define a plurality of catalyst bed regions in which catalyst material is placed, each having an inlet for the flow of starting gas material and an outlet for the egress of reaction product, wherein the direction of flow of the heat transfer medium through the passages is perpendicular to the direction of flow of starting material gas through the plurality of catalyst regions.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: July 6, 2010
    Assignees: Mitsubishi Chemical Corporation, Mitsubishi Chemical Engineering Corporation
    Inventors: Yasuyuki Sakakura, Youji Kawatani, Teruo Saitou
  • Publication number: 20050226793
    Abstract: A plate type catalytic reactor capable of improving reaction performance and extending the service life of the catalyst by controlling efficiently a temperature profile in a catalyst layer, is presented. A plate type catalytic reactor characterized in that a plurality of pairs of heat transfer plates, each formed of two sheets of corrugated plates joined to each other and each having a plurality of heat transfer medium flow passages, are arranged so that projected surface parts and recessed surface parts of the corrugated plates of adjacent heat transfer plates are opposed to each other to form a catalyst layer, wherein a circular or elliptic arc shape formed in the corrugated palates may be changed to increase the thickness of the catalyst layer from the inlet toward the outlet for a starting material gas fed to the catalyst layer.
    Type: Application
    Filed: June 1, 2005
    Publication date: October 13, 2005
    Applicants: MITSUBISHI CHEMICAL CORPORATION, MITSUBISHI CHEMICAL ENGINEERING CORPORATION
    Inventors: Yasuyuki Sakakura, Youji Kawatani, Teruo Saitou