Patents by Inventor Tetsushi KITANO

Tetsushi KITANO 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).

  • Instrumentation device having pulse output function
    Patent number: 10320377
    Abstract: An instrumentation device having a pulse output function for preventing breakage of a switching element even if a wrong wire is connected. A calculation unit includes: a positive power supply terminal; a negative power supply terminal; a signal terminal; a control circuit; an NPN-type transistor; a feedback circuit; a PTC thermistor; and an N-channel type MOSFET. The NPN-type transistor has a collector terminal connected to the positive power supply terminal, an emitter terminal connected to the negative power supply terminal, and a base terminal connected to the control circuit. The PTC thermistor is a resettable protection element, and is connected in series to the signal terminal. The N-channel type MOSFET has a drain terminal connected to the signal terminal through the PTC thermistor, a source terminal connected to the negative power supply terminal on a downstream side of the feedback circuit, and a gate terminal connected to the control circuit.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: June 11, 2019
    Assignee: OVAL CORPORATION
    Inventors: Tetsushi Kitano, Noriaki Nakayama, Yoshimine Tanabu, Kenji Washio
  • INSTRUMENTATION DEVICE HAVING PULSE OUTPUT FUNCTION
    Publication number: 20180262187
    Abstract: An instrumentation device having a pulse output function for preventing breakage of a switching element even if a wrong wire is connected. A calculation unit includes: a positive power supply terminal; a negative power supply terminal; a signal terminal; a control circuit; an NPN-type transistor; a feedback circuit; a PTC thermistor; and an N-channel type MOSFET. The NPN-type transistor has a collector terminal connected to the positive power supply terminal, an emitter terminal connected to the negative power supply terminal, and a base terminal connected to the control circuit. The PTC thermistor is a resettable protection element, and is connected in series to the signal terminal. The N-channel type MOSFET has a drain terminal connected to the signal terminal through the PTC thermistor, a source terminal connected to the negative power supply terminal on a downstream side of the feedback circuit, and a gate terminal connected to the control circuit.
    Type: Application
    Filed: September 14, 2016
    Publication date: September 13, 2018
    Applicant: Oval Corporation
    Inventors: Tetsushi KITANO, Noriaki NAKAYAMA, Yoshimine TANABU, Kenji WASHIO