Patents by Inventor Hidenori HIBI

Hidenori HIBI 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).

  • Thermal type flowmeter using quadratic function of logarithm of flow rate
    Patent number: 10788346
    Abstract: A thermal type flowmeter includes a sensor and a flow-rate calculating unit. The sensor includes a heater that heats a fluid to be measured. The sensor is configured to output a sensor value corresponding to a state of thermal diffusion in the fluid heated by the heater which is being driven in such a manner that a difference between a temperature of the heater and a temperature of the fluid at a location free from thermal influence of the heater is equal to a predetermined temperature difference. The flow-rate calculating unit is configured to calculate a flow rate of the fluid from the sensor value by using a flow-rate calculation equation, “sensor value=transformation coefficient A×log (flow rate)2+transformation coefficient B×log (flow rate)+transformation coefficient C”.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: September 29, 2020
    Assignee: AZBIL CORPORATION
    Inventors: Yoshio Yamazaki, Hidenori Hibi
  • THERMAL TYPE FLOWMETER
    Publication number: 20190086248
    Abstract: A thermal type flowmeter includes a sensor and a flow-rate calculating unit. The sensor includes a heater that heats a fluid to be measured. The sensor is configured to output a sensor value corresponding to a state of thermal diffusion in the fluid heated by the heater which is being driven in such a manner that a difference between a temperature of the heater and a temperature of the fluid at a location free from thermal influence of the heater is equal to a predetermined temperature difference. The flow-rate calculating unit is configured to calculate a flow rate of the fluid from the sensor value by using a flow-rate calculation equation, “sensor value=transformation coefficient A×log (flow rate)2+transformation coefficient B×log (flow rate)+transformation coefficient C”.
    Type: Application
    Filed: September 13, 2018
    Publication date: March 21, 2019
    Applicant: AZBIL CORPORATION
    Inventors: Yoshio YAMAZAKI, Hidenori HIBI