Patents by Inventor Toshiharu Niwa

Toshiharu Niwa 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).

  • Superconductor layer and method of manufacturing the same
    Publication number: 20060199741
    Abstract: There is provided is a method of manufacturing a superconductor layer, including preparing a coating solution by dissolving trifluoroacetates of at least one metal selected from the group consisting of yttrium and lanthanoids, barium, and copper in a solvent, coating a main surface of a substrate with the coating solution to form a coating film, subjecting the coating film to a calcining process in an atmosphere containing oxygen, and subjecting the coating film after the calcining process to a firing process in an atmosphere containing water vapor at a temperature higher than that at the calcining process. The calcining process is carried out such that the coating film after the calcining process and before the firing process have an average CuO particle diameter equal to or less than 25 nm.
    Type: Application
    Filed: May 3, 2006
    Publication date: September 7, 2006
    Inventors: Takeshi Araki, Toshiharu Niwa, Takemi Muroga, Yutaka Yamada, Izumi Hirabayashi
  • Superconductor layer and method of manufacturing the same
    Patent number: 7069065
    Abstract: There is provided is a method of manufacturing a superconductor layer, including preparing a coating solution by dissolving trifluoroacetates of at least one metal selected from the group consisting of yttrium and lanthanoids, barium, and copper in a solvent, coating a main surface of a substrate with the coating solution to form a coating film, subjecting the coating film to a calcining process in an atmosphere containing oxygen, and subjecting the coating film after the calcining process to a firing process in an atmosphere containing water vapor at a temperature higher than that at the calcining process. The calcining process is carried out such that the coating film after the calcining process and before the firing process have an average CuO particle diameter equal to or less than 25 nm.
    Type: Grant
    Filed: April 7, 2004
    Date of Patent: June 27, 2006
    Assignees: Kabushiki Kaisha Toshiba, Chubu Electric Power Co., Inc., Hitachi Cable Ltd., International Superconductivity Technology Center
    Inventors: Takeshi Araki, Toshiharu Niwa, Takemi Muroga, Yutaka Yamada, Izumi Hirabayashi
  • Superconductor layer and method of manufacturing the same
    Publication number: 20040192559
    Abstract: There is provided is a method of manufacturing a superconductor layer, including preparing a coating solution by dissolving trifluoroacetates of at least one metal selected from the group consisting of yttrium and lanthanoids, barium, and copper in a solvent, coating a main surface of a substrate with the coating solution to form a coating film, subjecting the coating film to a calcining process in an atmosphere containing oxygen, and subjecting the coating film after the calcining process to a firing process in an atmosphere containing water vapor at a temperature higher than that at the calcining process. The calcining process is carried out such that the coating film after the calcining process and before the firing process have an average CuO particle diameter equal to or less than 25 nm.
    Type: Application
    Filed: April 7, 2004
    Publication date: September 30, 2004
    Applicants: KABUSHIKI KAISHA TOSHIBA, CHUBU ELECTRIC POWER CO., INC., HITACHI CABLE LTD., International Superconductivity Technology Center
    Inventors: Takeshi Araki, Toshiharu Niwa, Takemi Muroga, Yutaka Yamada, Izumi Hirabayashi