Patents by Inventor Atsushi KUNIYASU

Atsushi KUNIYASU 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).

  • Piston for internal combustion engine and manufacturing method thereof
    Patent number: 9581105
    Abstract: A piston for an internal combustion engine includes a piston main body for the internal combustion engine, and a crosshatched groove being formed on a surface of the piston main body. The crosshatched groove includes a crosshatch angle that corresponds to a crossing angle of lines that configure a crosshatch, the crosshatch angle that is set at a range from equal to or greater than 15 degrees to equal to or less than 35 degrees.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: February 28, 2017
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Atsushi Kuniyasu, Takuya Niimi, Akihiro Okamoto, Ryo Okazaki, Takayuki Hayashi
  • PISTON FOR INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREOF
    Publication number: 20160169151
    Abstract: A piston for an internal combustion engine includes a piston main body for the internal combustion engine, and a crosshatched groove being formed on a surface of the piston main body. The crosshatched groove includes a crosshatch angle that corresponds to a crossing angle of lines that configure a crosshatch, the crosshatch angle that is set at a range from equal to or greater than 15 degrees to equal to or less than 35 degrees.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 16, 2016
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Atsushi KUNIYASU, Takuya NIIMI, Akihiro OKAMOTO, Ryo OKAZAKI, Takayuki HAYASHI