Patents by Inventor Hirohaki Kumakura

Hirohaki Kumakura 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).

  • Method of producing oxide superconductive composite material
    Patent number: 6569813
    Abstract: A method of producing a composite material of a bismuth 2212 phase and a metallic substrate, wherein the first and second baking are conducted as an isothermal heat treatment. According to this process, temperature control is easy, high productivity is obtained, and the critical current density is improved.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: May 27, 2003
    Assignee: Japan as represented by Director General of National Research Institute for Metals
    Inventors: Hitoshi Kitaguchi, Hirohaki Kumakura, Kazumasa Togano
  • Method of producing oxide superconductive composite material
    Publication number: 20010007849
    Abstract: A method of producing a composite material of a bismuth 2212 phase and a metallic substrate, wherein the first and second baking are conducted as an isothermal heat treatment.
    Type: Application
    Filed: January 22, 2001
    Publication date: July 12, 2001
    Inventors: Hitoshi Kitaguchi, Hirohaki Kumakura, Kazumasa Togano