Patents by Inventor Teruhisa Saito

Teruhisa Saito 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).

  • In-vehicle electronic device, thermal flowmeter and electronic circuit board
    Patent number: 7286943
    Abstract: Radio-frequency currents vary phases of the radio-frequency voltages appearing at both positive and negative input terminals of an operational amplifier depending on inductance and resistance of conductors forming an electronic device. If the phases of radio-frequency voltages appearing at both positive and negative input terminals of the operational amplifier are different, an offset voltage of the operational amplifier varies to change the operation point of the electronic device resulting in malfunction thereof.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: October 23, 2007
    Assignee: Hitachi, Ltd.
    Inventor: Teruhisa Saito
  • In-vehicle electronic device, thermal flowmeter and electronic circuit board
    Publication number: 20040206172
    Abstract: Radio-frequency currents vary phases of the radio-frequency voltages appearing at both positive and negative input terminals of an operational amplifier depending on inductance and resistance of conductors forming an electronic device. If the phases of radio-frequency voltages appearing at both positive and negative input terminals of the operational amplifier are different, an offset voltage of the operational amplifier varies to change the operation point of the electronic device resulting in malfunction thereof.
    Type: Application
    Filed: April 13, 2004
    Publication date: October 21, 2004
    Inventor: Teruhisa Saito