Patents by Inventor Kei Toda

Kei Toda 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).

  • Patent number: 11938801
    Abstract: To provide a vehicle drive device capable of effectively driving a vehicle by using in-wheel motors without falling into the vicious cycle between enhancement of driving via the motors and an increase in vehicle weight. The present invention is a vehicle drive device that uses in-wheel motors to drive a vehicle and includes in-wheel motors (20) that are provided in wheels (2b) of a vehicle (1) and drive the wheels, a body side motor (16) that is provided in a body of the vehicle and drives the wheels of the vehicle, and a battery (18) and a capacitor (22) that supply electric power for driving the in-wheel motors and/or the body side motor, in which a voltage of the battery is applied to the body side motor and a voltage of the battery and the capacitor connected in series is applied to the in-wheel motors.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: March 26, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Isao Toda, Seiyo Hirano, Kei Yonemori, Hideki Sanai
  • Patent number: 10181369
    Abstract: An NTC thermistor to be embedded in a substrate includes a thermistor body that is a ceramic sintered body and includes two opposed main surfaces, two opposed side surfaces, and two opposed end surfaces, a plurality of internal electrodes provided inside the thermistor body, and two external electrodes provided on outer surfaces of the thermistor body, and electrically connected to the plurality of internal electrodes. Each of the external electrodes includes a first electrode layer covering one of the end surfaces of the thermistor body, a second electrode layer provided on each of the main surfaces of the thermistor body, the second electrode layer including at least one layer, one end of the second electrode layer being in contact with the first electrode layer, and another end thereof extending in a direction of another end surface, and a third electrode layer including at least one layer and covering the first electrode and the second electrode layers.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: January 15, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Kei Toda
  • Publication number: 20180130577
    Abstract: An NTC thermistor to be embedded in a substrate includes a thermistor body that is a ceramic sintered body and includes two opposed main surfaces, two opposed side surfaces, and two opposed end surfaces, a plurality of internal electrodes provided inside the thermistor body, and two external electrodes provided on outer surfaces of the thermistor body, and electrically connected to the plurality of internal electrodes. Each of the external electrodes includes a first electrode layer covering one of the end surfaces of the thermistor body, a second electrode layer provided on each of the main surfaces of the thermistor body, the second electrode layer including at least one layer, one end of the second electrode layer being in contact with the first electrode layer, and another end thereof extending in a direction of another end surface, and a third electrode layer including at least one layer and covering the first electrode and the second electrode layers.
    Type: Application
    Filed: August 17, 2017
    Publication date: May 10, 2018
    Inventor: Kei TODA
  • Patent number: 9103780
    Abstract: A pretreatment device 10 for analysis of dissolved ions, which comprises: a sample solution flow channel 11 through which a sample solution containing dissolved ions flows; an acceptor solution flow channel 13 which is arranged adjacent to the sample solution flow channel 11 so as to intercalate a dialysis membrane 12 between the acceptor solution flow channel 13 and the sample solution flow channel 11; a pair of electrodes 14a, 14b which are so arranged as to intercalate the sample solution flow channel 11 and the acceptor solution flow channel 13 therebetween, wherein one of the pair of electrodes 14a, 14b is provided on the sample solution flow channel 11, and the other one of the pair of electrodes 14a, 14b is provided on the acceptor solution flow channel 13; a direct current power source 5 which enables the generation of a predetermined potential difference between the electrodes 14a, 14b; and an electrode separator 15 provided between the dialysis membrane 12 and an inside surface of the electrode prov
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: August 11, 2015
    Assignee: NATIONAL UNIVERSITY CORPORATION KUMAMOTO UNIVERSITY
    Inventors: Shin-Ichi Ohira, Kei Toda, Purnendu K. Dasgupta
  • Publication number: 20130327647
    Abstract: Provided is a pretreatment device for analysis of dissolved ions, which enables the separation of dissolved ions to be analyzed from a sample solution in a short period of time and which is applicable to both a case in which the dissolved ions to be measured is a cation and a case in which the dissolved ions to be measured is an anion.
    Type: Application
    Filed: August 30, 2011
    Publication date: December 12, 2013
    Inventors: Shin-Ichi Ohira, Kei Toda, Purnendu K. Dasgupta