Patents by Inventor Kouichi Ikushima

Kouichi Ikushima 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).

  • Multiple uneven plate and separator using multiple uneven plate
    Patent number: 6833214
    Abstract: A method of manufacturing a multiple uneven plate having multiple uneven portions, the multiple uneven portions having large protruding degree of each of the concave or convex portions, the concave or convex portions adjacent to one another includes the steps of forming a plurality of grooves, so that in the grooves the plate thickness is reduced and bending the plate to form a plurality of crest and trough lines crossing the grooves.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: December 21, 2004
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Jun Funatsu, Kouichi Ikushima, Kouji Shimoda
  • Multiple uneven plate, multiple uneven plate bending mold, multiple uneven plate manufacturing method and separator using multiple uneven plate
    Patent number: 6490778
    Abstract: A method of manufacturing a multiple uneven plate having multiple uneven portions, the multiple uneven portions having large protruding degree of each of the concave or convex portions, the concave or convex portions adjacent to one another includes the steps of forming a plurality of grooves, so that in the grooves the plate thickness is reduced and bending the plate to form a plurality of crest and trough lines crossing the grooves.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: December 10, 2002
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Jun Funatsu, Kouichi Ikushima, Kouji Shimoda
  • Multiple uneven plate, multiple uneven plate bending mold, multiple uneven plate manufacturing method and separator using multiple uneven plate
    Publication number: 20020168562
    Abstract: A method of manufacturing a multiple uneven plate having multiple uneven portions, the multiple uneven portions having large protruding degree of each of the concave or convex portions, the concave or convex portions adjacent to one another includes the steps of forming a plurality of grooves, so that in the grooves the plate thickness is reduced and bending the plate to form a plurality of crest and trough lines crossing the grooves.
    Type: Application
    Filed: July 1, 2002
    Publication date: November 14, 2002
    Inventors: Jun Funatsu, Kouichi Ikushima, Kouji Shimoda