Patents by Inventor Yuuji Naitou

Yuuji Naitou 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).

  • Exhaust emission purification apparatus for engine
    Patent number: 8181446
    Abstract: A reduction catalyst is disposed in an exhaust passage of an engine. A reducing agent added to the exhaust gas is urged to react with NOx in the exhaust gas, catalyzed by the reduction catalyst. A member for distributing the exhaust gas to which the reducing agent has been added is provided. This member is formed by applying of an axial welding and is disposed in the exhaust passage such that the internal surface of its joining portion is disposed to overhang from the topmost position of the joining portion.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: May 22, 2012
    Assignee: Nissan Diesel Motor Co., Ltd.
    Inventors: Koutarou Honda, Yuuji Naitou, Isamu Kanaya, Daisuke Shirai, Hitoshi Hiramoto, Naobumi Yamada
  • EXHAUST EMISSION PURIFICATION APPARATUS FOR ENGINE
    Publication number: 20080072576
    Abstract: A reduction catalyst is disposed in an exhaust passage of an engine. A reducing agent added to the exhaust gas is urged to react with NOx in the exhaust gas, catalyzed by the reduction catalyst. A member for distributing the exhaust gas to which the reducing agent has been added is provided. This member is formed by applying of an axial welding and is disposed in the exhaust passage such that the internal surface of its joining portion is disposed to overhang from the topmost position of the joining portion.
    Type: Application
    Filed: November 16, 2007
    Publication date: March 27, 2008
    Applicants: NISSAN DIESEL MOTOR CO., LTD., TOKYO ROKI CO., LTD.
    Inventors: Koutarou HONDA, Yuuji NAITOU, Isamu KANAYA, Daisuke SHIRAI, Hitoshi HIRAMOTO, Naobumi YAMADA