Patents by Inventor Kiyoshi Uyama

Kiyoshi Uyama 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).

  • Circulating fluid-bed combustion apparatus
    Patent number: 5064621
    Abstract: A circulating fluid-bed combustion apparatus comprises a fluid-bed combustion chamber having a primary combustion air inlet and secondary combustion air inlet, the primary combustion air inlet arranged at the bottom of the fluid-bed combustion chamber and the secondary combustion air inlet being arranged in an intermediate portion of the fluid-bed combustion chamber; a layrinth separator for separating coarse particles from gases, which is positioned below the secondary combustion air inlet; a heat exchanger, into which combustion gases are led from the fluid-bed combustion chamber; a multicyclone for separating fine particles from gases discharged out of the heat exchanger; and a distributor for distributing particles separated in the multicyclone to an upper zone of the fluid-bed combustion chamber above the labyrinth separator and to a lower zone of the fluid-bed combustion chamber below the labyrinth separator.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: November 12, 1991
    Assignee: NKK Corporation
    Inventors: Kiyoshi Uyama, Koji Yamamoto, Haruhito Tsuboi, Toshihiko Iwasaki
  • Apparatus for dehydrating sludge
    Patent number: 4986910
    Abstract: This present invention relates to a method of dehydrating a wet sludge. The wet sludge which is subjected to a preliminary dehydration by gravity dehydration or the like, is pelletized by a pelletizer, and obtained pellets of the sludge are subjected to compression dehydration with a pair of endless filter fabrics.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: January 22, 1991
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Kiyoshi Uyama, Yasuhiko Kihara
  • Method and apparatus for dehydrating sludge
    Patent number: 4761895
    Abstract: A technique for dehydrating a wet sludge. Wet sludge is subjected to a preliminary dehydration by gravity dehydration or the like. It is then pelletized by a pelletizer, and obtained pellets of the sludge are subjected to compression dehydration with a pair of endless filter fabrics.
    Type: Grant
    Filed: November 26, 1984
    Date of Patent: August 9, 1988
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Kiyoshi Uyama, Yoshio Kanno, Kiyoteru Segawa, Yasuhiko Kihara
  • Method for dehydrating sludge
    Patent number: 4657682
    Abstract: This present invention relates to a method of dehydrating a wet sludge. The wet sludge which is subjected to a preliminary dehydration by gravity dehydration or the like, is pelletized by a pelletizer, and obtained pellets of the sludge are subjected to compression dehydration with a pair of endless filter fabrics.
    Type: Grant
    Filed: November 26, 1984
    Date of Patent: April 14, 1987
    Assignee: Nippon Kokan Kabushiki Kaisha
    Inventors: Kiyoshi Uyama, Yasuhiko Kihara