Patents by Inventor Takeshi Haniu

Takeshi Haniu 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).

  • Iron-based sintered alloy for valve seat, and valve seat for internal combustion engine
    Patent number: 8733313
    Abstract: It is an object of the present invention to provide a valve seat product in which the amount of hard particles added to improve the wear resistance of a valve seat of an internal combustion engine is increased, and is excellent in the mechanical strength and machinability.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: May 27, 2014
    Assignee: Nippon Piston Ring Co., Ltd.
    Inventors: Kenichi Sato, Hiroshi Oshige, Takeshi Haniu
  • IRON-BASED SINTERED ALLOY FOR VALVE SEAT, AND VALVE SEAT FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20110023808
    Abstract: It is an object of the present invention to provide a valve seat product in which the amount of hard particles added to improve the wear resistance of a valve seat of an internal combustion engine is increased, and is excellent in the mechanical strength and machinability.
    Type: Application
    Filed: March 25, 2009
    Publication date: February 3, 2011
    Applicant: Nippon Piston Ring Co., Ltd.
    Inventors: Kenichi Sato, Hiroshi Oshige, Takeshi Haniu