Patents by Inventor Shuichiro Shimoda

Shuichiro Shimoda 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).

  • Oxide superconductor Bi--Sr--Ca--Mg--Ba--Cu--O
    Patent number: 5238911
    Abstract: An oxide superconductor of the formula: Bi.sub.1.0 Sr.sub.A Ca.sub.B Mg.sub.C Ba.sub.D Cu.sub.1.0.+-.0.15 O.sub.X wherein A=0.6-1.3, B=0.3-0.9, C=0.01-0.3 and D=0.01-0.3 in atomic ratio, having a 2212 phase with a critical temperature of making electrical resistance zero at about 80K or more, can be produced by firing preferably at 820.degree.-870.degree. C. in a lower oxygen content atmosphere.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: August 24, 1993
    Assignee: Hitachi Chemical Company Ltd.
    Inventors: Hidegi Kuwajima, Keiji Sumiya, Shuichiro Shimoda, Toranosuke Ashizawa, Minoru Ishihara, Shozo Yamana
  • Bi-Pb-Sr-Mg-Ba-Ca-Cu-O oxide superconductors and production thereof
    Patent number: 5194421
    Abstract: The present invention provides an oxide superconductor which is mainly composed of bismuth, lead, strontium, calcium, magnesium, and copper and has the composition represented by the formula:Bi.sub.1-A Pb.sub.A Sr.sub.1-B Mg.sub.B Ca.sub.1 Cu.sub.1.7.+-.0.3 Oxwherein A=0.15-0.35 and B=0.05-0.3 in which numerals represent atomic ratio and an oxide superconductor which is mainly composed of bismuth, lead, strontium, calcium, magnesium, barium and copper and has the composition represented by the formula:Bi.sub.1-A Pb.sub.A Sr.sub.1-(B+C) (Mg.sub.B Ba.sub.C)Ca.sub.1 Cu.sub.1.7.+-.0.3 Oxwherein A=0.15-0.35, B=0.05-0.3 and C=0.02-0.2 in which numerals represent atomic ratio. Methods for producing these superconductors are also provided.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: March 16, 1993
    Assignee: Hitachi Chemical Company
    Inventors: Shuichiro Shimoda, Toranosuke Ashizawa, Keiji Sumiya, Hideji Kuwajima, Minoru Ishihara, Shozo Yamana
  • Superconducting thick film circuit board, production thereof, thick film superconductor and production thereof
    Patent number: 5147851
    Abstract: A superconducting thick film circuit board or thick film superconductor obtained by forming a rod-like crystal superconducting composite layer comprising a superconductor made of a compound of M-Ba-Cu-O, M being Y and/or a lanthanide element, and a composite of Ag and Pt on a stabilized zirconia substrate has a high Jc value and good superconducting properties.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: September 15, 1992
    Assignee: Hitachi Chemical Company Ltd.
    Inventors: Shozo Yamana, Hideji Kuwajima, Minoru Ishihara, Keiji Sumiya, Toranosuke Ashizawa, Shuichiro Shimoda