Patents Assigned to Meomax Co., Ltd.
  • Magnetic refrigerant material, regenerator and magnetic refrigerator
    Patent number: 6826915
    Abstract: A magnetic refrigerant material exhibits sufficiently great magnetocaloric effect at or near room temperature. The magnetic refrigerant material has an NiAs type hexagonal structure in a ferromagnetic phase. The magnetic refrigerant material includes a first element Mn, a second element As and a third element to substitute for a portion of the second element, and exhibits a magnetic phase transition in a temperature range from about 230 K to less than about 318 K.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: December 7, 2004
    Assignee: Meomax Co., Ltd.
    Inventors: Hirofumi Wada, Satoshi Hirosawa