Patents by Inventor Ki Young MIN

Ki Young MIN 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: 20230405708
    Abstract: A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: a groove on a line formed on one surface of an electrical steel sheet in a direction crossing a rolling direction; and a thermal shock portion on a line formed on one surface of the electrical steel sheet in the direction crossing the rolling direction, wherein a distance between the groove and the thermal shock portion is 1 mm or less.
    Type: Application
    Filed: August 23, 2023
    Publication date: December 21, 2023
    Applicant: POSCO CO., LTD
    Inventors: Se-Min PARK, Jae Soo KIM, Ki-Young MIN, Seong-Cheol HONG, Won-Gul LEE
  • Patent number: 11772189
    Abstract: A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: a groove on a line formed on one surface of an electrical steel sheet in a direction crossing a rolling direction; and a thermal shock portion on a line formed on one surface of the electrical steel sheet in the direction crossing the rolling direction, wherein a distance between the groove and the thermal shock portion is 1 mm or less.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: October 3, 2023
    Assignee: POSCO CO., LTD
    Inventors: Se-Min Park, Jae Soo Kim, Ki-Young Min, Seong-Cheol Hong, Won-Gul Lee
  • Publication number: 20230060058
    Abstract: A grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes: a linear groove formed in one or both surfaces of the electrical steel sheet in a direction intersecting with a rolling direction; and a linear thermal shock portion formed in the one or both surfaces of the electrical steel sheet in a direction intersecting with the rolling direction. An angle between a longitudinal direction of the groove and a longitudinal direction of the thermal shock portion is 1 to 5°.
    Type: Application
    Filed: December 9, 2020
    Publication date: February 23, 2023
    Applicant: POSCO
    Inventors: Se-Min Park, Chang-Ho Kim, Ki-Young Min
  • Publication number: 20230027665
    Abstract: A foreign substance capturing apparatus according to an embodiment of the present invention may comprise: a capturing body unit having an inlet port for introducing the air including magnetic foreign substances and an outlet port for discharging the air from which the magnetic foreign substances have been removed; and a magnetic isolation unit connected to the capturing body unit, including a magnetic member for isolating, by an attractive force, the magnetic foreign substances from the air flowing in the capturing body unit, and provided with a non-magnetic member surrounding the magnetic member.
    Type: Application
    Filed: November 17, 2020
    Publication date: January 26, 2023
    Applicant: POSCO
    Inventors: Seong-Cheol Hong, Ki-Young Min, Dong-Geun Kim, Oho-Cheal Kwon, Chang-Ho Kim
  • Patent number: 11313011
    Abstract: A method for refining magnetic domains of a grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes: a step of preparing a grain-oriented electrical steel sheet; and a step of forming a groove by irradiating a quasi-continuous laser beam of which a duty is from 98.0 to 99.9% on a surface of the grain-oriented electrical steel sheet.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 26, 2022
    Assignee: POSCO
    Inventors: Oh-Yeoul Kwon, Ki-Young Min, Se-Min Park, Jong-Tae Park, Seong-Cheol Hong
  • Publication number: 20220119901
    Abstract: A grain-orientation electrical steel sheet according to an exemplary embodiment of the present invention includes a linear groove formed in a direction intersecting with the rolling direction, the groove includes the gradient section and the uniform section on a cross section including the transverse direction of the groove and the rolling surface normal direction of the steel sheet, and a length of the gradient section (GS) and the length of the uniform section (US) satisfy Equation 1 below. 0.1?[GSL]/[USL]?0.5??[Equation 1] In Equation 1, [GSL] represents the length (mm) of the gradient section and [USL] represents the length (mm) of the uniform section.
    Type: Application
    Filed: May 23, 2019
    Publication date: April 21, 2022
    Inventors: Se-Min Park, Seong-Cheol Hong, Hyun-Chul Park, Jung-Moon Kang, Chang-Ho Kim, Won-Gul Lee, Ki-Young Min
  • Publication number: 20220048136
    Abstract: An alien substance removing apparatus according to one embodiment of the present invention may comprise: a hood unit provided adjacent to an electrical steel sheet and for collecting an alien substance generated in the electrical steel sheet by laser irradiation; and a scraping unit coupled to the hood unit and scraping and removing the alien substance attached to one surface of the hood unit facing the electrical steel sheet.
    Type: Application
    Filed: December 11, 2019
    Publication date: February 17, 2022
    Inventors: Seong-Cheol HONG, Ki-Young MIN, Se-Min PARK, Dong-Geun KIM, Oho-Cheal KWON, Chang-Ho KIM, Sang-Uk HA
  • Publication number: 20220040790
    Abstract: A foreign substance collecting apparatus according to one embodiment of the present disclosure may comprise: a collection body unit formed with a suction port through which air including foreign substances flows in and a discharge port through which air removed of the foreign substances is discharged; and a mixing unit provided inside the collection body unit and disposed on a flow passage of the air, and forming a vortex in washing water contained therein by inducing a rotary flow of the air.
    Type: Application
    Filed: September 18, 2019
    Publication date: February 10, 2022
    Inventors: Seong-Cheol HONG, Ki-Young MIN, Se-Min PARK, Dong-Geun KIM, Chang-Ho KIM, Jung-Moon KANG, Oho-Cheal KWON
  • Patent number: 11065720
    Abstract: By optimizing equipment and processing, magnetic domain miniaturization efficiency can be increased, workability can be improved, and processing ability can be increased through same. Provided is a method for miniaturizing the magnetic domains of a directional electric steel plate, the method comprising: a steel plate supporting roll position adjusting step of controlling the vertical direction position of a steel plate while supporting the steel plate progressing along a production line; and a laser emitting step of melting the steel plate by emitting a laser beam to form grooves on the surface of the steel plate and a removing steel plate surface step of to remove remaining spatters dropped on the surface of the steel plate after the laser emitting.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: July 20, 2021
    Assignee: POSCO
    Inventors: Seong Cheol Hong, Ki Young Min, Gyoo Taek Lee, Se min Park, Oh Yeoul Kwon, Jae Kyoum Kim
  • Patent number: 11060163
    Abstract: Provided is a method for refining magnetic domains of grain-oriented electrical steel plates including: a steel plate supporting roll position adjusting step of controlling a vertical direction position of the steel plate while supporting the steel plate; a laser radiating step of melting the steel plate by radiating a laser beam to form grooves on the surface of the steel plate; and a setting and maintaining step of setting and maintaining an internal operation environment of a laser room in which the laser radiation is performed, so as to increase magnetic domain refinement efficiency and improve workability by optimizing equipment and processes, thereby increasing the processing capacity.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: July 13, 2021
    Assignee: POSCO
    Inventors: Seong Cheol Hong, Jae Kyoum Kim, Ki Young Min, Se Min Park, Myung Sik Chun, Gyoo Taek Lee, Oh Yeoul Kwon, Hyun Chui Park
  • Patent number: 11000920
    Abstract: By optimizing equipment and processing, magnetic domain miniaturization efficiency can be increased, workability can be improved, and processing ability can be increased through same.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: May 11, 2021
    Assignee: POSCO
    Inventors: Gyoo Taek Lee, Myung Sik Chun, Seong Cheol Hong, Ki Young Min
  • Publication number: 20210130922
    Abstract: A method for refining magnetic domains of a grain-oriented electrical steel sheet according to an exemplary embodiment of the present invention includes: a step of preparing a grain-oriented electrical steel sheet; and a step of forming a groove by irradiating a quasi-continuous laser beam of which a duty is from 98.0 to 99.9% on a surface of the grain-oriented electrical steel sheet.
    Type: Application
    Filed: December 20, 2017
    Publication date: May 6, 2021
    Inventors: Oh-Yeoul KWON, Ki-Young MIN, Se-Min PARK, Jong-Tae PARK, Seong-Cheol HONG
  • Publication number: 20210060694
    Abstract: A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: a groove on a line formed on one surface of an electrical steel sheet in a direction crossing a rolling direction; and a thermal shock portion on a line formed on one surface of the electrical steel sheet in the direction crossing the rolling direction, wherein a distance between the groove and the thermal shock portion is 1 mm or less.
    Type: Application
    Filed: December 17, 2018
    Publication date: March 4, 2021
    Inventors: Se-Min PARK, Jae Soo KIM, Ki-Young MIN, Seong-Cheol HONG, Won-Gul LEE
  • Publication number: 20190070693
    Abstract: By optimizing equipment and processing, magnetic domain miniaturization efficiency can be increased, workability can be improved, and processing ability can be increased through same.
    Type: Application
    Filed: December 23, 2016
    Publication date: March 7, 2019
    Inventors: Gyoo Taek LEE, Myung Sik CHUN, Seong Cheol HONG, Ki Young MIN
  • Publication number: 20190062866
    Abstract: Provided is a method for refining magnetic domains of grain-oriented electrical steel plates including: a steel plate supporting roll position adjusting step of controlling a vertical direction position of the steel plate while supporting the steel plate; a laser radiating step of melting the steel plate by radiating a laser beam to form grooves on the surface of the steel plate; and a setting and maintaining step of setting and maintaining an internal operation environment of a laser room in which the laser radiation is performed, so as to increase magnetic domain refinement efficiency and improve workability by optimizing equipment and processes, thereby increasing the processing capacity.
    Type: Application
    Filed: December 23, 2016
    Publication date: February 28, 2019
    Inventors: Seong Cheol HONG, Jae Kyoum KIM, Ki Young MIN, Se min PARK, Myung Sik CHUN, Gyoo Taek LEE, Oh Yeoul KWON, Hyun Chul PARK
  • Publication number: 20190054570
    Abstract: By optimizing equipment and processing, magnetic domain miniaturization efficiency can be increased, workability can be improved, and processing ability can be increased through same. Provided is a method for miniaturizing the magnetic domains of a directional electric steel plate, the method comprising: a steel plate supporting roll position adjusting step of controlling the vertical direction position of a steel plate while supporting the steel plate progressing along a production line; and a laser emitting step of melting the steel plate by emitting a laser beam to form grooves on the surface of the steel plate and a removing steel plate surface step of to remove remaining spatters dropped on the surface of the steel plate after the laser emitting.
    Type: Application
    Filed: January 18, 2017
    Publication date: February 21, 2019
    Inventors: Seong Cheol HONG, Ki Young MIN, Gyoo Taek LEE, Se min PARK, Oh Yeoul KWON, Jae Kyoum KIM