Patents by Inventor Tomoyuki KUSUNOKI

Tomoyuki KUSUNOKI 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: 10845352
    Abstract: A slag volume evaluation method for a molten metal surface includes calculating an approximation curve indicating a correspondence between a thickness of slag and a density parameter in advance by measuring thicknesses of a plurality of pieces of the slag which float on a surface of a molten metal in a container and differ from each other in thickness, and calculating a value of the density parameter which is correlated to a density in a pixel region corresponding to the plurality of pieces of the slag in a captured image of a molten metal surface in the container; and calculating a volume of the slag by calculating and integrating the thickness of the slag for each of pixels constituting the captured image obtained by capturing an image of the molten metal surface which is an evaluation target, according to a value of the density parameter of each of the pixels and the approximation curve.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: November 24, 2020
    Assignee: NIPPON STEEL CORPOATION
    Inventors: Tomoyuki Kusunoki, Takahiro Miyazaki
  • Publication number: 20200064326
    Abstract: A slag volume evaluation method for a molten metal surface includes calculating an approximation curve indicating a correspondence between a thickness of slag and a density parameter in advance by measuring thicknesses of a plurality of pieces of the slag which float on a surface of a molten metal in a container and differ from each other in thickness, and calculating a value of the density parameter which is correlated to a density in a pixel region corresponding to the plurality of pieces of the slag in a captured image of a molten metal surface in the container; and calculating a volume of the slag by calculating and integrating the thickness of the slag for each of pixels constituting the captured image obtained by capturing an image of the molten metal surface which is an evaluation target, according to a value of the density parameter of each of the pixels and the approximation curve.
    Type: Application
    Filed: December 6, 2017
    Publication date: February 27, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Tomoyuki KUSUNOKI, Takahiro MIYAZAKI
  • Publication number: 20200023429
    Abstract: A method of detecting slag in a molten steel flow includes an image capturing step of sequentially capturing a molten steel flow which is directed from a converter toward a ladle and includes molten steel and slag to acquire a plurality of captured images of the molten steel flow, a histogram creation step of creating a histogram for each captured image, a maximum peak point detection step of detecting a maximum peak point, in which the number of pixels is an absolute maximum value, for each histogram, and a maximum peak point type determination step of determining to which of the slag or the molten steel the maximum peak point of each histogram corresponds.
    Type: Application
    Filed: February 13, 2018
    Publication date: January 23, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Tomoyuki KUSUNOKI, Takahiro MIYAZAKI
  • Publication number: 20190390290
    Abstract: A method of detecting slag in a molten steel flow, includes a histogram creation step of creating a histogram for a captured image of a molten steel flow including molten steel and slag, a maximum peak point detection step of detecting a maximum peak point of the histogram, an intermediate peak point detection step of detecting an intermediate peak point of the histogram, an intermediate peak point counting step of counting the number Nh of intermediate peak points having a density parameter larger than the density parameter at the maximum peak point and the number N1 of intermediate peak points having a density parameter smaller than the density parameter at the maximum peak point, and a maximum peak point type determination step of determining a type of the maximum peak point by a magnitude relationship between the number N1 and the number Nh.
    Type: Application
    Filed: February 13, 2018
    Publication date: December 26, 2019
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Tomoyuki KUSUNOKI, Takahiro MIYAZAKI