Patents by Inventor Takenori Numasawa

Takenori Numasawa 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).

  • Ultra-low temperature regenerator and refrigerator
    Patent number: 7404295
    Abstract: The refrigeration performance in a range from 3 to 10 K can be improved in comparison with conventional metal based magnetic regenerator materials. The refrigerator is provided with a regenerator utilizing at least one magnetic material including a rare earth element and sulfur as the regenerator material.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: July 29, 2008
    Assignees: Sumitomo Heavy Industries, Ltd., National Institute for Materials Science
    Inventors: Rui Li, Takenori Numasawa
  • Cryogenic temperature cool storage device and refrigerator
    Publication number: 20050223714
    Abstract: The refrigeration performance in a range from 3 to 10 K can be improved in comparison with conventional metal based magnetic regenerator materials. The refrigerator is provided with a regenerator utilizing at least one magnetic material including a rare earth element and sulfur as the regenerator material.
    Type: Application
    Filed: March 12, 2003
    Publication date: October 13, 2005
    Inventors: Rui Li, Takenori Numasawa