Patents by Inventor Yohei Aizawa

Yohei Aizawa 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).

  • WATER TREATMENT APPARATUS
    Publication number: 20080073256
    Abstract: It is an object of the present teachings to provide a technique for effectively providing a packed region in a water treatment apparatus in which the packed region is provided in a path of water to be treated and is filled with biomembrane-deposited members. According to the present invention, a representative water treatment apparatus may include a packed region provided in a path of water to be treated, a first packed part arranged in the packed region, a block of first biomembrane-deposited members that are packed in the first packed part, a second packed part that is arranged under the first packed part, and a plurality of second biomembrane-deposited members that are packed in the second packed part. According to the invention, the first biomembrane-deposited members are configured to prevent the second biomembrane-deposited members from moving into the first packed part by pressing the second biomembrane-deposited members from above.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 27, 2008
    Applicant: FUJI CLEAN CO., LTD.
    Inventors: Keiji TEZUKA, Mitsuyuki YAMADA, Shin-ichi MIZUNO, Koichi MATSUO, Tsuyoshi ICHINARI, Yohei AIZAWA
  • Water treatment apparatus
    Patent number: 7306717
    Abstract: It is an object of the present teachings to provide a technique for effectively providing a packed region in a water treatment apparatus in which the packed region is provided in a path of water to be treated and is filled with biomembrane-deposited members. According to the present invention, a representative water treatment apparatus may include a packed region provided in a path of water to be treated, a first packed part arranged in the packed region, a block of first biomembrane-deposited members that are packed in the first packed part, a second packed part that is arranged under the first packed part, and a plurality of second biomembrane-deposited members that are packed in the second packed part. According to the invention, the first biomembrane-deposited members are configured to prevent the second biomembrane-deposited members from moving into the first packed part by pressing the second biomembrane-deposited members from above.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: December 11, 2007
    Assignee: Fuji Clean Co.
    Inventors: Keiji Tezuka, Mitsuyuki Yamada, Shin-ichi Mizuno, Koichi Matsuo, Tsuyoshi Ichinari, Yohei Aizawa