Patents by Inventor Yasunori TANAHASHI

Yasunori TANAHASHI 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).

  • Method and device for calculating core loss
    Patent number: 11287483
    Abstract: One object is to provide a method and a device for calculating core loss accurately. A calculation method includes: calculating core loss characteristics of a magnetic part having no superimposed direct current flowing therein, the magnetic part being made of one or more magnetic materials; and calculating a value of core loss of the magnetic part by multiplying the core loss characteristics by a rate of change of the core loss of the magnetic part caused by a superimposed direct current.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: March 29, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Azusa Tomita, Yasunori Tanahashi
  • Reliability test device for coil
    Patent number: 11275105
    Abstract: A test device according to an embodiment of the present invention includes: a first measurement terminal connected to one end of a first coil to be tested; a second measurement terminal connected to another end of the first coil; a direct-current power source connected to the first measurement terminal; a first semiconductor switch connected between the second measurement terminal and a ground; and a drive unit for turning on and off the first semiconductor switch.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: March 15, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yasunori Tanahashi, Hiroyoshi Kobayashi
  • METHOD AND DEVICE FOR CALCULATING CORE LOSS
    Publication number: 20200174056
    Abstract: One object is to provide a method and a device for calculating core loss accurately. A calculation method includes: calculating core loss characteristics of a magnetic part having no superimposed direct current flowing therein, the magnetic part being made of one or more magnetic materials; and calculating a value of core loss of the magnetic part by multiplying the core loss characteristics by a rate of change of the core loss of the magnetic part caused by a superimposed direct current.
    Type: Application
    Filed: November 26, 2019
    Publication date: June 4, 2020
    Inventors: Azusa TOMITA, Yasunori TANAHASHI
  • RELIABILITY TEST DEVICE FOR COIL
    Publication number: 20200124657
    Abstract: A test device according to an embodiment of the present invention includes: a first measurement terminal connected to one end of a first coil to be tested; a second measurement terminal connected to another end of the first coil; a direct-current power source connected to the first measurement terminal; a first semiconductor switch connected between the second measurement terminal and a ground; and a drive unit for turning on and off the first semiconductor switch.
    Type: Application
    Filed: October 4, 2019
    Publication date: April 23, 2020
    Inventors: Yasunori TANAHASHI, Hiroyoshi KOBAYASHI