Patents by Inventor Kazunari Ohwada

Kazunari Ohwada 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).

  • Fetus electrocardiogram signal measuring method and its device
    Patent number: 8340748
    Abstract: Disclosed are a fetus electrocardiogram signal measuring method and its device that are capable of measuring the electrocardiogram signals of a fetus even during fetus movements and even at a gestational age during which the measurement current is weak, without the need for reattaching the electrodes and providing any shield room, even if the mother is a hospitalized or ambulant pregnant woman. The fetus electrocardiogram signal measuring device includes (1) high input impedance electrodes, (2) region-variable ground electrodes, and (3) a differential amplifier circuit and an optimization computing section.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: December 25, 2012
    Assignee: Tohoku Techno Arch Co., Ltd.
    Inventors: Yoshitaka Kimura, Mitsuyuki Nakao, Takuya Ito, Kazunari Ohwada
  • FETUS ELECTROCARDIOGRAM SIGNAL MEASURING METHOD AND ITS DEVICE
    Publication number: 20100076330
    Abstract: Disclosed are a fetus electrocardiogram signal measuring method and its device that are capable of measuring the electrocardiogram signals of a fetus even during fetus movements and even at a gestational age during which the measurement current is weak, without the need for reattaching the electrodes and providing any shield room, even if the mother is a hospitalized or ambulant pregnant woman. The fetus electrocardiogram signal measuring device includes (1) high input impedance electrodes, (2) region-variable ground electrodes, and (3) a differential amplifier circuit and an optimization computing section.
    Type: Application
    Filed: January 22, 2008
    Publication date: March 25, 2010
    Applicant: TOHOKU TECHNO ARCH CO., LTD.
    Inventors: Yoshitaka Kimura, Mitsuyuki Nakao, Takuya Ito, Kazunari Ohwada