Patents Assigned to SHI-APD Cryogencis, Inc.
  • Refrigerator with magnetic shield
    Patent number: 7500366
    Abstract: A magnetic shield is mounted in its own vacuum enclosure in a regenerative type expander comprising a vacuum enclosure, magnetic material in a cold regenerator, and a magnetic shield, where the magnetic shield surrounds the magnetic material.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: March 10, 2009
    Assignees: SHI-APD Cryogencis, Inc., Sumitomo Heavy Industries, Ltd.
    Inventors: Mingyao Xu, Jin Lin Gao, Ralph C. Longsworth