Patents by Inventor Tsunehisa Shimizu

Tsunehisa Shimizu 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).

  • Mass flow sensor, mass flow meter including the mass flow sensor, and mass flow controller including the mass flow sensor
    Patent number: 11543275
    Abstract: A mass flow sensor is provided with reduced zero point fluctuation, and a mass flow meter and a mass flow controller using the mass flow sensor, the mass flow sensor comprising a U-shaped flow path passage in which a fluid flows from first end to a second end, having a bottom portion and two straight portions connecting the bottom portion to the ends, a first thermal resistor wound around one of the straight portions, a second thermal resistor wound around the same straight portion as the first thermal resistor and provided away from the first thermal resistor toward the second end, and a heat dissipating portion provided so as to be in contact with the flow path passage on the side opposite to the second thermal resistor across the first thermal resistor.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: January 3, 2023
    Assignee: Fujikin Incorporated
    Inventor: Tsunehisa Shimizu
  • Mass Flow Sensor, Mass Flow Meter Including the Mass Flow Sensor, and Mass Flow Controller Including the Mass Flow Sensor
    Publication number: 20200096373
    Abstract: A mass flow sensor is provided with reduced zero point fluctuation, and a mass flow meter and a mass flow controller using the mass flow sensor, the mass flow sensor comprising a U-shaped flow path passage in which a fluid flows from first end to a second end, having a bottom portion and two straight portions connecting the bottom portion to the ends, a first thermal resistor wound around one of the straight portions, a second thermal resistor wound around the same straight portion as the first thermal resistor and provided away from the first thermal resistor toward the second end, and a heat dissipating portion provided so as to be in contact with the flow path passage on the side opposite to the second thermal resistor across the first thermal resistor.
    Type: Application
    Filed: March 9, 2018
    Publication date: March 26, 2020
    Inventor: Tsunehisa Shimizu