Patents by Inventor Tatsuo Takechi

Tatsuo Takechi 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).

  • Method and apparatus for treating waste water
    Patent number: 6497819
    Abstract: A method for treating waste water and a plant designed for preventing the precipitation of carriers under the air blower installed for reaction tank or aeration tank, wherein the plant comprises an aeration tank 1 containing the carriers 2 for growing microorganism for biological treatment of waste water or the subunit 1a joined with the aeration tank through a partition wall 4 including the screen capable of separating the carriers 2, air blower 3 provided for the aeration tank or the subunit of the aeration tank, air bubble generator 5 or submerged stirrer provided under the air blower 3 for creating the flow of water so that the carriers 2 under the blower 3 can be liquidized by the flow of water created by the air bubble generator or the submerged stirrer to prevent the precipitation of the carriers 2 under the air blower 3, whereby not only the precipitation of the carriers under the air blower 3 can be prevented but also the water treatment efficiency and capacity meeting the designed numerical requirem
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: December 24, 2002
    Assignee: NKK Corporation
    Inventors: Kei Baba, Toshiaki Tsubone, Tatsuo Takechi, Shinichi Endo, Yukihiko Okamoto
  • Method and apparatus for wastewater treatment
    Publication number: 20020104798
    Abstract: Phosphorus in wastewater is removed by using an apparatus including a settling tank, an anaerobic tank, an aerobic tank, and a final settling tank. Nitrogen in wastewater is removed by using an apparatus including a settling tank, an anaerobic tank, a nitrification tank, and a final settling tank.
    Type: Application
    Filed: February 11, 2002
    Publication date: August 8, 2002
    Applicant: NKK CORPORATION
    Inventors: Tatsuo Takechi, Masahisa Tanabe, Toshiaki Tsubone, Jun Miyata, Kei Baba, Satoru Udagawa, Shinichi Endo
  • Apparatus for wastewater treatment
    Patent number: 6387254
    Abstract: Phosphorus in wastewater is removed by using an apparatus including a settling tank, an anaerobic tank, an aerobic tank, and a final settling tank. Nitrogen in wastewater is removed by using an apparatus including a settling tank, an anaerobic tank, a nitrification tank, and a final settling tank.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: May 14, 2002
    Assignee: NKK Corporation
    Inventors: Tatsuo Takechi, Masahisa Tanabe, Toshiaki Tsubone, Jun Miyata, Kei Baba, Satoru Udagawa, Shinichi Endo