Patents by Inventor Tomokazu Katayama

Tomokazu Katayama 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).

  • Drive controller for vehicle
    Patent number: 9174526
    Abstract: In a drive controller for a vehicle including: a drive source configured to output a drive force to a first axle serving as one of front and rear wheel axles; an electric motor configured to output a drive force to a second axle serving as the other of the front and rear wheel axles; a one-way power transmission device disposed on a power transmission pathway between the second axle and the electric motor so as to transmit a power drive force from the electric motor to the second axle; a two-way power transmission device that transmits a rotation power from the second axle to the electric motor or transmits the power drive force and a regeneration drive force from the electric motor to the second axle, the drive controller includes: a first detector that detects a speed of the vehicle or a rotation speed of the second axle; a target rotation speed determination section that determines a target rotation speed of the electric motor based on the speed of the vehicle or the rotation speed of the second axle; a se
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: November 3, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Akihiro Yamamoto, Tomokazu Katayama, Yoshihiro Kanamaru, Sei Shinohara, Nobuyuki Hiramatsu
  • DRIVE CONTROLLER FOR VEHICLE
    Publication number: 20120143426
    Abstract: In a drive controller for a vehicle including: a drive source configured to output a drive force to a first axle serving as one of front and rear wheel axles; an electric motor configured to output a drive force to a second axle serving as the other of the front and rear wheel axles; a one-way power transmission device disposed on a power transmission pathway between the second axle and the electric motor so as to transmit a power drive force from the electric motor to the second axle; a two-way power transmission device that transmits a rotation power from the second axle to the electric motor or transmits the power drive force and a regeneration drive force from the electric motor to the second axle, the drive controller includes: a first detector that detects a speed of the vehicle or a rotation speed of the second axle; a target rotation speed determination section that determines a target rotation speed of the electric motor based on the speed of the vehicle or the rotation speed of the second axle; a se
    Type: Application
    Filed: July 30, 2010
    Publication date: June 7, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Akihiro Yamamoto, Tomokazu Katayama, Yoshihiro Kanamaru, Sei Shinohara, Nobuyuki Hiramatsu