Patents by Inventor Sang-Hum Kwon

Sang-Hum Kwon 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: 8245760
    Abstract: Provided is a continuous cast slab and a manufacturing method for the same, wherein solidified layers of a cast slab having a non-solidified layer are compressed with each other during a continuous casting process to fundamentally prevent occurrence of defects, such as center segregation or porosity, which deteriorate quality of the cast slab, thereby decreasing defects. A continuous casting method for producing a cast slab by drawing molten steel from a mold includes preparing a compressing unit, and reducing at least one side of the drawn cast slab by using the compressing unit, wherein solute-enriched residual molten steel is caused to flow back in a direction opposite to a casting direction. Thus, it is possible to produce a cast slab wherein defects such as center segregation are greatly eliminated.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: August 21, 2012
    Assignee: Posco
    Inventors: Chang Hee Yim, Young Mok Won, Joong Kil Park, Sang Hum Kwon
  • Publication number: 20100296960
    Abstract: The present invention relates to a continuous cast slab and a manufacturing method for the same, wherein solidified layers of a cast slab having a non-solidified layer are compressed with each other during a continuous casting process to fundamentally prevent occurrence of defects, such as center segregation or porosity, which deteriorate quality of the cast slab, thereby decreasing defects. A continuous casting method for producing a cast slab by drawing molten steel from a mold includes preparing a compressing unit, and reducing at least one side of the drawn cast slab by means of the compressing unit, wherein solute-enriched residual molten steel is caused to flow back in a direction opposite to a casting direction. Thus, it is possible to produce a cast slab wherein defects such as center segregation are greatly eliminated.
    Type: Application
    Filed: November 19, 2008
    Publication date: November 25, 2010
    Inventors: Chang Hee Yim, Young Mok Won, Joong Kil Park, Sang Hum Kwon
  • Patent number: 7815753
    Abstract: Disclosed is a Fe-based bulk amorphous alloy composition which forms a bulk amorphous substance due to its excellent amorphous formability when it is cooled to a temperature lower than its glass transition temperature from the liquid state at a relatively low cooling rate of 1000 K/s or less, has high warm processability in a low temperature range owing to its supercooled liquid region of 20K or higher and has excellent fluidity in the liquid state and thereby good castability.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: October 19, 2010
    Assignee: Kyungpook National University Industry-Academic Cooperation Foundation
    Inventors: Seong-Hoon Yi, Hong-Xiang Li, Myung-Il Heo, Jong-Chul Yi, Dong-Jin Yu, Sang-Hum Kwon, Chul-Woo Kim, Jong-Won Kim, In-Seok Hwang
  • Publication number: 20070295429
    Abstract: Disclosed is a Fe-based bulk amorphous alloy composition which forms a bulk amorphous substance due to its excellent amorphous formability when it is cooled to a temperature lower than its glass transition temperature from the liquid state at a relatively low cooling rate of 1000 K/s or less, has high warm processability in a low temperature range owing to its supercooled liquid region of 20K or higher and has excellent fluidity in the liquid state and thereby good castability.
    Type: Application
    Filed: August 11, 2005
    Publication date: December 27, 2007
    Applicant: Kyungpook National University Industry-Academic Cooperation Foundation
    Inventors: Seong-Hoon Yi, Hong-Xiang Li, Myung-II Heo, Jong-Chul Yi, Dong-Jin Yu, Sang-Hum Kwon, Chul-Woo Kim, Jong-Won Kim, In-Seok Hwang