Patents by Inventor Hayao Karasaki

Hayao Karasaki 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).

  • Gas concentration-detecting device for detecting concentration of gas in oil
    Patent number: 6585938
    Abstract: There is provided a gas concentration-detecting device for detecting the concentration of gas in oil, which is capable of detecting the concentration of gas in oil with accuracy, irrespective of the temperature of oil, and even when oil is degraded. The gas concentration-detecting device includes two electrodes for being arranged in the oil such that the electrodes are opposed to each other and spaced from each other by a predetermined distance, and a capacitance amplifier for outputting a signal indicative of a concentration of gas in oil, the signal being dependent on a capacitance between the electrodes. The predetermined distance between the electrodes is set to a value equal to or larger than a predetermined value at which an amount of drift of the signal output from the capacitance amplifier dependent on variation in a temperature of the oil starts to gradually decrease as the distance between the electrodes is increased.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: July 1, 2003
    Assignee: Honda Giken Gokyo Kabushiki Kaisha
    Inventors: Kyoichi Machida, Nobuyuki Ohta, Katsunori Makino, Hayao Karasaki