Patents by Inventor Eiichiro Uematsu

Eiichiro Uematsu 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 material coating method for fuel cell-use separator
    Patent number: 7226635
    Abstract: A method for coating a sealant (39) on a separator (40) for a fuel cell. The separator has a sealing groove (118) formed therein, and widths of the sealing groove at a coating-start portion (39a) and a coating-end portion (39b) of the sealant are made greater than widths of remaining portions of the sealing groove. The sealant coating-start portion and the coating-end portion are made to intersect at a place where the width of the sealing groove is large. Adhesion between the coating-start portion and the coating-end portion is improved, and also, degrees of freedom of a sealant coated position increase, and sealability of a cell for a fuel cell is improved.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: June 5, 2007
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Akiyoshi Machida, Tetsuo Ishii, Eiichiro Uematsu, Akihiro Ohsugi, Osamu Kakutani, Youichi Kamiyama
  • Sealing material coating method for fuel cell-use separator
    Publication number: 20040191409
    Abstract: A method for coating a sealant (39) on a separator (40) for a fuel cell. The separator has in which a sealing groove (118), in which a sealant (39) is coated, is provided in a separator (40), formed therein, and widths of the sealing groove at a coating-start portion (39a) and a coating-end portion (39b) of the sealant are made greater than widths of remaining portions other than the coating start portion and the coating end of the sealing groove. The sealant portion, and coating-start portion and the coating-end portion of sealant are made to intersect at a place where the width of the sealing groove is made large. Adhesion between the coating-start portion and the coating-end portion is improved, and also, degrees of freedom of a sealant coated position increase, and sealability of a cell for a fuel cell is improved.
    Type: Application
    Filed: December 31, 2003
    Publication date: September 30, 2004
    Inventors: Akiyoshi Machida, Tetsuo Ishii, Eiichiro Uematsu, Akihiro Ohsugi, Osamu Kakutani, Youichi Kamiyama