Patents by Inventor Itsuo Uragami

Itsuo Uragami 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).

  • Filtration method and filtration apparatus
    Patent number: 6197203
    Abstract: Filtration apparatus prevents a membrane filter from fouling by providing a UV irradiation apparatus. The filtration apparatus comprises a filtration tank which contains a membrane filter with a pore size of 0.1 to 1 &mgr;m connected to the UV irradiation equipment, an air diffusing pipe placed below the membrane filter, an air blower for sending air to the air diffusing pipe, a filtrate discharge pipe connected to the membrane filter, a flow meter and a flow control valve.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: March 6, 2001
    Assignee: Chiyoda Kohan Co., Ltd.
    Inventors: Hiroshi Ishida, Itsuo Uragami, Toshiaki Inaba