Patents by Inventor Junko Hidaka, legal representative

Junko Hidaka, legal representative 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).

  • Power steering apparatus having failure detection device for rotation angle sensors
    Patent number: 7743875
    Abstract: A power steering apparatus has a steering power assisting system coupled to tire wheels and a variable gear transfer system coupled to a steering wheel. The steering power assisting system includes a torsion bar rotation sensor and a first actuator rotation sensor to calculate a first pinion angle and a second pinion angle based on the detected rotation angles, respectively. The variable gear transfer system includes a steering sensor and a second actuator rotation sensor to calculate a third pinion angle based on the detected rotation angles. Sensor failure is detected by comparing the calculated first, second and third pinion angles.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: June 29, 2010
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenichirou Hidaka, Junko Hidaka, legal representative, Nobuhiko Makino, Takahiro Kojo, Theerawat Limpibunterng