Patents by Inventor Yoshio Ebisu

Yoshio Ebisu 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).

  • Publication number: 20240051018
    Abstract: This invention is concerned with the production of directionally solidified castings or ingots to eliminate casting defects such as macrosegregation and misoriented grain defects that occur in the blades for jet engines and industrial gas turbines. The mechanism of the occurrence of the above casting defects was clarified by the computer simulation system developed by this inventor, and it was found that, by strongly cooling the solid phase region and applying an axial static magnetic field, the heat pulses at the solidification interface due to convection of the liquid phase can be suppressed, and harmful lateral liquid flow in the solid-liquid coexisting phase can be suppressed by the synergistic effect of these two measures. This eliminates casting defects such as macrosegregation and misoriented grain defects, also refines the microstructure to produce high-quality products with excellent mechanical properties (creep strength).
    Type: Application
    Filed: February 3, 2022
    Publication date: February 15, 2024
    Applicant: EBIS CORPORATION
    Inventor: Yoshio EBISU
  • Publication number: 20130276939
    Abstract: This invention is concerned with the productions of unidirectionally solidified castings and remelting processed ingots such as ESR or VAR, which has paid special attention to the liquid flow phenomena within solid-liquid coexisting phase (mushy phase) during solidification, and made it clear for the first time that by applying high static magnetic field onto the whole mushy phase, the extremely slow interdendritic liquid flow responsible for the formation of macrosegregation can be suppressed, and thereby that the macrosegregation such as freckles can completely be eliminated. Thus, this invention provides with a novel casting technology for producing high quality castings and ingots without macrosegregation.
    Type: Application
    Filed: June 20, 2013
    Publication date: October 24, 2013
    Inventor: Yoshio EBISU
  • Publication number: 20090165989
    Abstract: This invention is concerned with the productions of unidirectionally solidified castings and remelting-processed ingots such as ESR or VAR, which has paid special attention to the liquid flow phenomena within solid-liquid coexisting phase (mushy phase) during solidification, and made it clear for the first time that by applying high static magnetic field onto the whole mushy phase, the extremely slow interdendritic liquid flow responsible for the formation of macrosegregation can be suppressed, and thereby that the macrosegregation such as freckles can completely be eliminated. Thus, this invention provides with a novel casting technology for producing high quality castings and ingots without macrosegregation.
    Type: Application
    Filed: October 23, 2008
    Publication date: July 2, 2009
    Inventor: Yoshio Ebisu
  • Patent number: 6530418
    Abstract: Method and apparatus for continuous casting, especially casting of steel that can easily provide high quality steel that has no central segregation and central porosity.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: March 11, 2003
    Assignee: EBIS Corporation
    Inventors: Yoshio Ebisu, Kazuyoshi Sekine
  • Patent number: 6508299
    Abstract: Method and apparatus for continuous casting, especially casting of steel that can easily provide high quality steel that has no central segregation and central porosity.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: January 21, 2003
    Assignee: EBIS Corporation
    Inventors: Yoshio Ebisu, Kazuyoshi Sekine
  • Publication number: 20020117290
    Abstract: Method and apparatus for continuous casting, especially casting of steel that can easily provide high quality steel that has no central segregation and central porosity.
    Type: Application
    Filed: March 26, 2001
    Publication date: August 29, 2002
    Applicant: EBIS Corporation
    Inventors: Yoshio Ebisu, Kazuyoshi Sekine
  • Publication number: 20020050336
    Abstract: Method and apparatus for continuous casting, especially casting of steel that can easily provide high quality steel that has no central segregation and central porosity.
    Type: Application
    Filed: October 17, 2001
    Publication date: May 2, 2002
    Applicant: EBIS Corporation
    Inventors: Yoshio Ebisu, Kazuyoshi Sekine
  • Patent number: 6241004
    Abstract: Method and apparatus for continuous casting, especially casting of steel that can easily provide high quality steel that has no central segregation and central porosity.
    Type: Grant
    Filed: November 11, 1998
    Date of Patent: June 5, 2001
    Assignee: EBIS Corporation
    Inventors: Yoshio Ebisu, Kazuyoshi Sekine