Patents by Inventor Kouji Morishita

Kouji Morishita 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 device for oxygen concentration sensor
    Patent number: 9304105
    Abstract: A control device for controlling an oxygen concentration sensor includes: a voltage sweeping unit for applying a voltage to the sensor for a time interval during an impedance detection process; a pre-sweeping voltage memory for storing a terminal voltage of the sensor as an initial terminal voltage just before applying the voltage; an impedance detection unit for detecting an element impedance; a voltage returning unit for returning the terminal voltage to the initial terminal voltage after a predetermined time interval has elapsed; a monitoring unit for monitoring the terminal voltage after the voltage returning unit starts returning the terminal voltage; a determination unit for determining whether a monitored terminal voltage of the sensor reaches a stored terminal voltage in the memory; and a stop unit for stopping a returning operation of the voltage returning unit when the monitored terminal voltage reaches the stored terminal voltage.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: April 5, 2016
    Assignee: DENSO CORPORATION
    Inventors: Masaki Saijoh, Takamasa Oguri, Kouji Morishita
  • CONTROL DEVICE FOR OXYGEN CONCENTRATION SENSOR
    Publication number: 20140191773
    Abstract: A control device for controlling an oxygen concentration sensor includes: a voltage sweeping unit for applying a voltage to the sensor for a time interval during an impedance detection process; a pre-sweeping voltage memory for storing a terminal voltage of the sensor as an initial terminal voltage just before applying the voltage; an impedance detection unit for detecting an element impedance; a voltage returning unit for returning the terminal voltage to the initial terminal voltage after a predetermined time interval has elapsed; a monitoring unit for monitoring the terminal voltage after the voltage returning unit starts returning the terminal voltage; a determination unit for determining whether a monitored terminal voltage of the sensor reaches a stored terminal voltage in the memory; and a stop unit for stopping a returning operation of the voltage returning unit when the monitored terminal voltage reaches the stored terminal voltage.
    Type: Application
    Filed: December 23, 2013
    Publication date: July 10, 2014
    Applicant: DENSO CORPORATION
    Inventors: Masaki SAIJOH, Takamasa OGURI, Kouji MORISHITA
  • Digital multi meter
    Patent number: D705681
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: May 27, 2014
    Assignee: Hioki E.E. Corporation
    Inventors: Kouji Morishita, Seiji Onuma