Patents by Inventor Yuichi Imagawa

Yuichi Imagawa 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).

  • Production method of joints of superconducting oxide and normal conductor
    Patent number: 6235685
    Abstract: A rod 1 made of superconducting oxide is soaked in a molten normal conductor 2 to join the rod 1 and the normal conductor 2, whereby a superconducting oxide current lead is prepared. As a result, a contact resistance at the interface between the superconducting oxide and the normal conductor can be reduced. Consequently, Joule's heat at a current lead having a small cross sectional area can be suppressed low, which in turn realizes the reduction of the load on a freezer and the amount of evaporated cooling solvent, with respect to a superconducting coil.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: May 22, 2001
    Assignee: International Superconductivity Technology Center
    Inventors: Junya Maeda, Teruo Izumi, Yuichi Imagawa, Satoshi Matsuoka, Yuh Shiohara, Shoji Tanaka, Hiroshi Okamoto