Patents by Inventor Yukiko Kanazawa

Yukiko Kanazawa 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).

  • Wireless keyboard and information processing device having the same
    Patent number: 6839781
    Abstract: A wireless keyboard has a transmitting and receiving portion 12 for transmitting an input data D to an information processing device 2 and receiving a reception level from the information processing device 2, a transmission level setting portion 14 for storing the transmission level of the input data D, setting a new transmission level referring to the transmission level setting table in response to the combination of the stored transmission level and the reception level on receiving the reception level and detecting a distance information with respect to the information processing device 2 referring to a distance information table, a transmission level switching portion 15 for switching the transmission level of the input data D to a new transmission level, an LCD indicating portion 16 for receiving and indicating the distance information, a timer 13 for output a time-out signal in the event the reception level is not transmitted even a fixed period of time passed after the input data D is transmitted and an
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: January 4, 2005
    Assignee: NEC Corporation
    Inventor: Yukiko Kanazawa
  • Device for controlling an internal combustion engine
    Patent number: 6505465
    Abstract: A device for controlling an internal combustion engine capable of estimating the amount of NOx emission within short periods of time maintaining high precision and realizing improved control performance without increasing the cost as a result of not using map data in the ROM. The device includes NOx operation circuit for estimating the amount of NOx in the exhaust gas from a theoretical formula and an empirical formula based upon the intake air amount Qa, intake air temperature To, pressure Pb, air-fuel ratio &lgr; and EGR rate &bgr;, and control circuit for controlling at least either the NOx purifying catalyst or the combustion state in the internal combustion engine in order to lower the amount of NOx emission.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: January 14, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yukiko Kanazawa, Hideaki Katashiba, Kazuhiko Kawajiri, Takashi Yonezawa
  • Device for controlling an internal combustion engine
    Publication number: 20020112469
    Abstract: A device for controlling an internal combustion engine capable of estimating the amount of NOx emission within short periods of time maintaining high precision and realizing improved control performance without increasing the cost as a result of not using map data in the ROM. The device includes NOx operation means 34A for estimating the amount of NOx in the exhaust gas from a theoretical formula and an empirical formula based upon the intake air amount Qa, intake air temperature To, pressure Pb, air-fuel ratio &lgr; and EGR rate &bgr;, and control means for controlling at least either the NOx purifying catalyst 17 or the combustion state in the internal combustion engine in order to lower the amount of NOx emission.
    Type: Application
    Filed: July 10, 2001
    Publication date: August 22, 2002
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Yukiko Kanazawa, Hideaki Katashiba, Kazuhiko Kawajiri, Takashi Yonezawa