Patents by Inventor Yasutaka AMAGAI

Yasutaka AMAGAI 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).

  • Thermophysical property measurement method and thermophysical property measurement apparatus
    Patent number: 10876983
    Abstract: Thermophysical property measurement method and apparatus are provided that make it possible to simply and conveniently obtain a highly precise absolute thermoelectric power and thermal conductivity.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: December 29, 2020
    Inventors: Yasutaka Amagai, Takeshi Shimazaki, Hiroyuki Fujiki
  • THERMOPHYSICAL PROPERTY MEASUREMENT METHOD AND THERMOPHYSICAL PROPERTY MEASUREMENT APPARATUS
    Publication number: 20190086346
    Abstract: Thermophysical property measurement method and apparatus are provided that make it possible to simply and conveniently obtain a highly precise absolute thermoelectric power and thermal conductivity.
    Type: Application
    Filed: February 28, 2017
    Publication date: March 21, 2019
    Inventors: Yasutaka AMAGAI, Takeshi SHIMAZAKI, Hiroyuki FUJIKI
  • Thermophysical property measurement method and thermophysical property measurement apparatus
    Patent number: 10088439
    Abstract: Thermophysical property measurement apparatus and method that can obtain accurate absolute thermoelectric power and thermal conductivity are provided easily and conveniently. A thermophysical property measurement apparatus 50 is provided which includes a DC-AC voltage generator 100 which selectively applies AC or DC voltages of different polarities to a metal sample 4 to which temperature gradient is provided by connecting the metal sample 4 between metal blocks of temperatures T1 and T2; a thermocouple 5 which measures a temperature change at the center of the metal sample 4 when the AC voltage is applied thereto by the DC-AC voltage generator 100 and a temperature change at the center of the metal sample 4 when the DC voltages of the different polarities are applied; and an operation device 54 which calculates absolute thermoelectric power and thermal conductivity of the metal sample 4 using the two temperature changes measured by the thermocouple 5.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: October 2, 2018
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Yasutaka Amagai, Hiroyuki Fujiki, Nobuhisa Kaneko, Atsushi Yamamoto, Megumi Akoshima
  • THERMOPHYSICAL PROPERTY MEASUREMENT METHOD AND THERMOPHYSICAL PROPERTY MEASUREMENT APPARATUS
    Publication number: 20160202196
    Abstract: Thermophysical property measurement apparatus and method that can obtain accurate absolute thermoelectric power and thermal conductivity are provided easily and conveniently. A thermophysical property measurement apparatus 50 is provided which includes a DC-AC voltage generator 100 which selectively applies AC or DC voltages of different polarities to a metal sample 4 to which temperature gradient is provided by connecting the metal sample 4 between metal blocks of temperatures T1 and T2; a thermocouple 5 which measures a temperature change at the center of the metal sample 4 when the AC voltage is applied thereto by the DC-AC voltage generator 100 and a temperature change at the center of the metal sample 4 when the DC voltages of the different polarities are applied; and an operation device 54 which calculates absolute thermoelectric power and thermal conductivity of the metal sample 4 using the two temperature changes measured by the thermocouple 5.
    Type: Application
    Filed: June 6, 2014
    Publication date: July 14, 2016
    Inventors: Yasutaka AMAGAI, Hiroyuki FUJIKI, Nobuhisa KANEKO, Atsushi YAMAMOTO, Megumi AKOSHIMA