The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 2008
Filed:
Mar. 12, 2003
Applicants:
Rui LI, Tokyo, JP;
Takenori Numasawa, Ibaraki, JP;
Inventors:
Rui Li, Tokyo, JP;
Takenori Numasawa, Ibaraki, JP;
Assignees:
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
National Institute for Materials Science, Ibaraki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 9/00 (2006.01); C99Z 99/00 (2006.01); F28D 17/00 (2006.01); F23L 15/02 (2006.01);
U.S. Cl.
CPC ...
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.