Patents by Inventor Shinobu Hikami

Shinobu Hikami 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).

  • Y-Ba-Cu-O superconductive substance
    Patent number: 5238912
    Abstract: The disclosed substance has a composition of Y.sub.x Ba.sub.y CuO.sub.z, wherein x=0.2-0.5 y=0.2-0.5 and z.perspectiveto.l+y+(3/2)x, with a face-centered tetragonal crystalline structure of perovskite type. When being cooled at 85-135K, the structure of the substance starts to transform and its electric resistance disappears at a temperature higher than 47K so that the substance becomes superconductive.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: August 24, 1993
    Assignee: The University of Tokyo
    Inventor: Shinobu Hikami
  • Superconductive substance Y.sub.0.294 Ba.sub.0.336 Cu.sub.01.77
    Patent number: 5098885
    Abstract: The disclosed substance has a composition of Y.sub.x Ba.sub.y CuO.sub.z, wherein x=0.2-0.5 y=0.2-0.5 and z.perspectiveto.1+y+(3/2)x, with a face-centered tetragonal crystalline structure of perovskite type. When being cooled at 85-135 K, the structure of the substance starts to transform and its electric resistance disappears at a temperature higher than 47 K so that the substance becomes superconductive.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: March 24, 1992
    Assignee: The University of Tokyo
    Inventor: Shinobu Hikami