Patents by Inventor Katsuhide Masuda

Katsuhide Masuda 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 speed upward flow filtration apparatus
    Patent number: 5248415
    Abstract: In a high speed upward flow filtration apparatus, an upper perforated panel for receiving a fibrous lump is secured to a circumferential side plate for receiving the fibrous lump. A lower movable perforated panel for receiving the fibrous lump is vertically moved by a vertical motion cylinder, and fitted into the circumferential side plate for receiving the fibrous lump under the upper perforated panel for receiving the fibrous lump. A filter layer is formed by filling the fibrous lump between the upper perforated panel for receiving the fibrous lump and the lower movable perforated panel for receiving the fibrous lump. An unfiltered water supply diffuser is provided under the lower movable perforated panel for receiving the fibrous lump. The lower movable perforated panel is raised by the vertical moving cylinder to form a dense and uniform filter layer and to implement a high performance filtration.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: September 28, 1993
    Assignee: Mitsuimiikekakouki Kabushiki Kaisha
    Inventors: Katsuhide Masuda, Yoshinori Kuba, Takashi Yamaguchi, Katsuji Ide