Patents by Inventor Kotaro Ninomiya

Kotaro Ninomiya 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).

  • Control system for automatic transmission
    Patent number: 5211081
    Abstract: A control system for an automatic transmission including a main transmission and a subtransmission whose shift operation is carried out by hydraulically. The control system comprises a first device for adjusting a gear ratio advance of the main transmission, the gear ratio advance corresponding to a gear ratio change during the shift operation, a second device for adjusting a gear ratio advance of the subtransmission, the gear ratio advance corresponding to a gear ratio change during the shift operation, and a device for controlling the frist adjusting device and the second adjusting device during concurrent shift operations of the main transmission and the subtransmission so that the gear ratio advances of the main transmission and the subtransmission become equal to respective predetermined target gear ratio advances.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: May 18, 1993
    Assignee: Mazda Motor Corporation
    Inventors: Keiji Bota, Hidehiko Mishima, Hiroto Kawano, Takuro Shigemura, Toshihisa Marusue, Kotaro Ninomiya