Patents by Inventor Ryaouichi Naganuma

Ryaouichi Naganuma 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).

  • Automitic transmission
    Publication number: 20030183030
    Abstract: The object of the present invention is to dissolve the shock originated from engaging and disengaging of the clutch during acceleration, when using a mesh type transmission provided with a clutch for engaging and disengaging the shift gear and the output shaft.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 2, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Mitsuo Kayano, Ryaouichi Naganuma, Toshimichi Minowa, Hiroshi Ohnishi, Takashi Okada, Tatsuya Ochi, Hiroshi Sakamoto