Patents by Inventor Osami Katou

Osami Katou 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).

  • Apparatus and method for treating water
    Patent number: 6511602
    Abstract: There is here disclosed a water treatment apparatus in which a membrane separation device is disposed above a gas diffuser device arranged in a treating tank, wherein diameters of gas discharge holes formed in the gas diffuser device are within a range of 1 to 10 mm, and a relational expression of 20<X/Y<300 is satisfied wherein X is a sectional area (cm2) of the membrane separation device in a horizontal direction, and Y is the number of the gas discharge holes of the gas diffuser device. According to this water treatment apparatus, the clogging of the pores in the surface of a separation membrane with a suspended substance can be inhibited, so that a stable filtration is possible for a long period of time.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: January 28, 2003
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Satoshi Miyashita, Kenji Honjyo, Osami Katou, Hiroyuki Okazaki, Katsuyuki Yanone, Masumi Kobayashi