Patents by Inventor Numazawa TAKENORI

Numazawa TAKENORI 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).

  • Magnetic refrigerator and device including the same
    Patent number: 9970690
    Abstract: A magnetic refrigerator, and a device including the same, include a hot-end heat exchanger, a cold-end heat exchanger, a magnetic material arranged so as to provide a temperature gradient between the hot-end heat exchanger and the cold-end heat exchanger, and a heat exchange medium, and satisfying the following Equation 1. k=Th/Tc=?Sc/?Sh>1??EQUATION 1 In Equation 1, Th is a temperature of a hot-end heat exchanger, Tc is a temperature of a cold-end heat exchanger, ?Sh is an entropy change of a magnetic material at Th, and ?Sc is an entropy change of a magnetic material at Tc.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: May 15, 2018
    Assignees: Samsung Electronics Co., Ltd., National Institute for Materials Science
    Inventors: Soon-Jae Kwon, Numazawa Takenori
  • MAGNETIC REFRIGERATOR AND DEVICE INCLUDING THE SAME
    Publication number: 20150211771
    Abstract: A magnetic refrigerator, and a device including the same, include a hot-end heat exchanger, a cold-end heat exchanger, a magnetic material arranged so as to provide a temperature gradient between the hot-end heat exchanger and the cold-end heat exchanger, and a heat exchange medium, and satisfying the following Equation 1. k=Th/Tc=?Sc/?Sh>1??EQUATION 1 In Equation 1, Th is a temperature of a hot-end heat exchanger, Tc is a temperature of a cold-end heat exchanger, ?Sh is an entropy change of a magnetic material at Th, and ?Sc is an entropy change of a magnetic material at Tc.
    Type: Application
    Filed: December 9, 2014
    Publication date: July 30, 2015
    Applicant: National Institute for Materials Science
    Inventors: Soon-Jae KWON, Numazawa TAKENORI