Patents by Inventor Kunihiko Koyanagi

Kunihiko Koyanagi 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).

  • Patent number: 9096440
    Abstract: A method of producing a superconductive material involves the step (1) of applying a solution of an organic compound of metals and oxides of the metals forming a superconductive material, onto a support body to be subsequently dried, the provisional baking step (2) of causing organic components of the organic compound of the metals to undergo thermal decomposition, and the main baking process step (3) of causing transformation of the oxides of the metals into the superconductive material, thereby producing an epitaxially-grown superconductive coating material, wherein the support body is irradiated with the laser light during a period between the steps (1) and (2) from a surface of the support body, on the opposite side of the surface coated with the solution of the organic compound of the metals for forming the superconductive material.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: August 4, 2015
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, THE JAPAN STEEL WORKS, LTD.
    Inventors: Mitsugu Sohma, Tetsuo Tsuchiya, Toshiya Kumagai, Kenichi Tsukada, Kunihiko Koyanagi, Takashi Ebisawa, Hidehiko Ohtu
  • Patent number: 8716189
    Abstract: A method of producing a superconductive material involves the step (1) of applying a solution of an organic compound of metals, oxides of the metals forming a superconductive material, onto a support body to be subsequently dried, a provisional baking step (2) of causing organic components of the organic compound of the metals to undergo thermal decomposition, and a main baking process step (3) of causing transformation of the oxides of the metals into the superconductive material, thereby producing an epitaxially-grown superconductive coating material, wherein at the time of irradiation of a surface of the support body coated with the solution of the organic compound of the metals for forming the superconductive material, and/or of a surface of the support body, opposite to the surface coated with the solution of the organic compound of the metals, with the laser light, during a period between the steps (1) and (2).
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: May 6, 2014
    Assignees: National Institute of Advanced Industrial Science and Technology, The Japan Steel Works, Ltd.
    Inventors: Mitsugu Sohma, Tetsuo Tsuchiya, Toshiya Kumagai, Kenichi Tsukada, Kunihiko Koyanagi, Takashi Ebisawa, Hidehiko Ohtu
  • Publication number: 20090318296
    Abstract: The invention provides a method of efficiently producing a superconductive material more excellent in properties without the occurrence of ablation and so forth, and large in area when executing thermal decomposition of an organic compound of metals, and formation of a superconductive material with heat treatment.
    Type: Application
    Filed: February 5, 2008
    Publication date: December 24, 2009
    Inventors: Mitsugu Sohma, Tetsuo Tsuchiya, Toshiya Kumagai, Kenichi Tsukada, Kunihiko Koyanagi, Takashi Ebisawa, Hidehiko Ohtu
  • Publication number: 20090156411
    Abstract: There is provided a method of efficiently producing a superconductive material more excellent in properties, and large in area when executing thermal decomposition of a metalorganic compound, and formation of a superconductive material with heat treatment.
    Type: Application
    Filed: July 31, 2007
    Publication date: June 18, 2009
    Inventors: Mitsugu Sohma, Tetsuo Tsuchiya, Toshiya Kumagai, Kenichi Tsukada, Kunihiko Koyanagi, Takashi Ebisawa, Hidehiko Ohtu
  • Patent number: 5574129
    Abstract: A process for producing polylactic acid includes the steps of polycondensing lactic acid to a lactic acid prepolymer having a weight-average molecular weight of 10,000-50,000 in a batch-type polymerization reactor, and polycondensing the lactic acid prepolymer to lactic acid polymer having a weight-average molecular weight of at least 100,000 by means of a screw-type extruder.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: November 12, 1996
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Rika Miyoshi, Tadamoto Sakai, Noriaki Hashimoto, Yukihiro Sumihiro, Kayoko Yokota, Kunihiko Koyanagi