Patents by Inventor Emi Motegi

Emi Motegi 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).

  • Pressure sensor, pressure sensor control apparatus, and pressure sensor system
    Patent number: 6604423
    Abstract: The type of a pressure sensor is automatically identified even when the input/output lines of the pressure sensor are three lines, i.e., power source lines (two of + and −) and a voltage output line for outputting a voltage corresponding to an applied pressure. The current value Ip, which flows through the power source lines of the pressure sensor, is made to be a different value depending on each type of the pressure sensor. A voltage value Vr (Vr=Ip×Rr, where Rr is a resistance value of a resistor) is measured by using a differential amplifier, and the voltage value Vr is compared with a voltage range previously recorded in ROM. Accordingly, the type of the pressure sensor can be automatically identified by using a microcomputer.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: August 12, 2003
    Assignee: SMC Kabushiki Kaisha
    Inventors: Kenji Irokawa, Koichi Katsumata, Emi Motegi
  • Signal input and output unit
    Patent number: D449789
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: October 30, 2001
    Assignee: SMC Kabushiki Kaisha
    Inventors: Ken Gunji, Kenji Irokawa, Koichi Katsumata, Emi Motegi