Patents by Inventor Kyu Seok Han

Kyu Seok Han 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: 10760141
    Abstract: An oriented electrical steel sheet includes Ba at about 0.005 wt % to about 0.5 wt % inclusive, Y at about 0.005 wt % to about 0.5 wt % inclusive, or a composite of Ba and Y at about 0.005 wt % to about 0.5 wt % inclusive, the remainder including Fe and impurities, based on 100 wt % of a total composition of a base steel sheet thereof.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: September 1, 2020
    Assignee: POSCO
    Inventors: Hyung Don Joo, Hyung-Ki Park, Jin-Wook Seo, Kyu-Seok Han, Jae-Soo Lim, Hyun-Seok Ko
  • Patent number: 10643847
    Abstract: A method for manufacturing a functionalized graphene structure includes preparing a substrate having a graphene layer, forming an organic linker layer by providing an organic linker on the graphene layer, and forming a dopant layer by providing a dopant material including a metal on the organic linker layer. The organic linker layer and the dopant layer are formed in-situ.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: May 5, 2020
    Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Myung Mo Sung, Kyu-Seok Han
  • Publication number: 20190323105
    Abstract: A grain-oriented electrical steel sheet of an embodiment of the present invention comprises Si: 1.0% to 7.0% and Y: 0.005% to 0.5% by wt %, and the remainder comprising Fe and other inevitable impurities, and 10 pieces or less of inclusions comprising Y and having a diameter of 30 nm to 5 ?m per area of 1 mm2.
    Type: Application
    Filed: December 21, 2017
    Publication date: October 24, 2019
    Applicants: POSCO, POSCO
    Inventors: Chang Soo Park, Kyu-Seok Han, Hyung Don Joo, Jae Kyoum Kim, Woo-Sin Kim
  • Patent number: 10453942
    Abstract: A method of fabricating a thin film transistor includes preparing a plastic substrate, forming a transparent active layer on the plastic substrate through an atomic layer deposition method by providing a first source including zinc on the plastic substrate and providing a second source including sulfur on the plastic substrate, providing a gate electrode overlapping with the transparent active layer, and providing a gate insulating layer between the gate electrode and the transparent active layer. A ratio of the providing of the first source to the providing of the second source ranges from 7:1 to 13:1.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: October 22, 2019
    Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Myung Mo Sung, Kyu-Seok Han, Kwan Hyuck Yoon
  • Publication number: 20190309387
    Abstract: The grain-oriented electrical steel sheet according to one embodiment of the present invention includes, by weight, Si: 1.0 to 7.0%, B: 0.001 to 0.1%, and Ba and Y individually or in a total amount of 0.005 to 0.5%, and the remainder includes Fe and other unavoidable impurities.
    Type: Application
    Filed: October 25, 2017
    Publication date: October 10, 2019
    Applicant: POSCO
    Inventors: Chang Soo Park, Kyu-Seok Han, Hyung Don Joo, Jin-Wook Seo, Woo-Sin Kim
  • Patent number: 10418300
    Abstract: The present invention relates to a substrate structure in which organic-inorganic hybrid thin films are laminated and a method for preparing the same and more specifically to a substrate structure in which organic-inorganic hybrid thin films are laminated that can be used for light emitters, display devices and solar cell devices wherein the organic-inorganic hybrid thin film including a stable new functional group, an inorganic precursor and an organic precursor are alternately used to afford stability in air and a method for preparing the same.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: September 17, 2019
    Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Myung Mo Sung, Kyu Seok Han
  • Publication number: 20190062917
    Abstract: A pressurization type method for manufacturing elementary metal may include a metal precursor gas pressurization dosing operation of, in a state where an outlet of a chamber having a substrate is closed, increasing a pressure in the chamber by providing a metal precursor gas consisting of metal precursors, thereby adsorbing the metal precursors onto the substrate, a main purging operation of purging a gas after the metal precursor gas pressurization dosing operation, a reaction gas dosing operation of providing a reaction gas to reduce the metal precursors adsorbed on the substrate to elementary metal, after the main purging operation, and a main purging operation of purging a gas after the reaction gas dosing operation.
    Type: Application
    Filed: October 26, 2018
    Publication date: February 28, 2019
    Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Myung Mo SUNG, Kyu-Seok HAN, Hongbum KIM
  • Publication number: 20190055644
    Abstract: A stabilized elementary metal structure is disclosed. The stabilized elementary metal structure may include an elementary metal having at least one layer and having a two-dimensional layer structure, and an organic molecular layer provided on at least one of a top surface and a bottom surface of the elementary metal.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Myung Mo SUNG, Hong Bum KIM, Jin Won JUNG, Kyu Seok HAN
  • Publication number: 20180371571
    Abstract: A method for manufacturing an oriented electrical steel sheet according to an exemplary embodiment of the present invention includes: providing a slab including, as wt %, Si at equal to or less than 4.0% (excluding 0%), C at 0.001% to 0.4%, and Mn at 0.001% to 2.0%, and including a balance including Fe and inevitably mixed and input impurities; reheating the slab; manufacturing a hot steel sheet by hot-rolling the slab; performing hot-rolled steel sheet annealing to the hot steel sheet; primarily cold-rolling the hot-rolled steel sheet annealed hot steel sheet; decarburization-annealing the cold-rolled steel sheet; secondarily cold-rolling the decarburization-annealed steel sheet; and finally annealing the cold-rolled steel sheet, wherein, regarding the finally annealed steel sheet, a size 2L of a magnetic domain existing in a grain is less than a thickness D of the steel sheet (2L<D).
    Type: Application
    Filed: December 20, 2016
    Publication date: December 27, 2018
    Inventors: Kyu-Seok HAN, Hyun-Seok KO
  • Publication number: 20180247816
    Abstract: A method for manufacturing a functionalized graphene structure includes preparing a substrate having a graphene layer, forming an organic linker layer by providing an organic linker on the graphene layer, and forming a dopant layer by providing a dopant material including a metal on the organic linker layer. The organic linker layer and the dopant layer are formed in-situ.
    Type: Application
    Filed: April 20, 2018
    Publication date: August 30, 2018
    Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Myung Mo SUNG, Kyu-Seok HAN
  • Publication number: 20180233584
    Abstract: A method of fabricating a thin film transistor includes preparing a plastic substrate, forming a transparent active layer on the plastic substrate through an atomic layer deposition method by providing a first source including zinc on the plastic substrate and providing a second source including sulfur on the plastic substrate, providing a gate electrode overlapping with the transparent active layer, and providing a gate insulating layer between the gate electrode and the transparent active layer. A ratio of the providing of the first source to the providing of the second source ranges from 7:1 to 13:1.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 16, 2018
    Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Myung Mo SUNG, Kyu-Seok HAN, Kwan Hyuck YOON
  • Patent number: 9997283
    Abstract: Provided is a grain-oriented electric steel sheet having superior magnetic property and to a grain-oriented electric steel sheet including 2.0 to 4.5 weight % of Si, 0.001 to 0.10 weight % of C, 0.010 weight % or lower of Al, 0.08 weight % or lower of Mn, 0.005 weight % or lower of N, 0.002 to 0.050 weight % of S, the remainder being Fe and other unavoidable impurities. The steel sheet having been subjected to secondary recrystallization using at least any one of grain boundary-segregated elementary S and an FeS precipitate as a grain growth inhibitor.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: June 12, 2018
    Assignee: POSCO
    Inventors: Kyu-Seok Han, Jae-Soo Lim, Byung-Deug Hong, Chan-Hee Han
  • Publication number: 20180002772
    Abstract: A method for manufacturing a grain-oriented electrical steel sheet, according to an embodiment of the present invention includes: heating a slab, based on 100 wt % of a total composition thereof, including N at 0.0005 wt % to 0.015 wt %, Ti at 0.0001 wt % to 0.020 wt %, V at 0.0001 wt % to 0.020 wt %, Nb at 0.0001 wt % to 0.020 wt %, B at 0.0001 wt % to 0.020 wt %, and the remaining portion including Fe and other impurities, and then hot rolling it to prepare a hot-rolled steel sheet; annealing the hot-rolled steel sheet; after the hot-rolled steel sheet is annealed, cooling the hot-rolled steel sheet, and then cold rolling it to prepare a cold-rolled steel sheet; decarburization-annealing the cold-rolled steel sheet and then nitriding-annealing it, or simultaneously performing the decarburization-annealing and the nitriding-annealing; and final-annealing the decarburization-annealed and nitriding-annealed steel sheet.
    Type: Application
    Filed: December 18, 2015
    Publication date: January 4, 2018
    Inventors: Kyu-Seok HAN, Hyung Don JOO, Jong-Tae PARK, Jin-Wook SEO, Hyun-Seok KO
  • Publication number: 20170335425
    Abstract: An oriented electrical steel sheet includes Ba at about 0.005 wt % to about 0.5 wt % inclusive, Y at about 0.005 wt % to about 0.5 wt % inclusive, or a composite of Ba and Y at about 0.005 wt % to about 0.5 wt % inclusive, the remainder including Fe and impurities, based on 100 wt % of a total composition of a base steel sheet thereof.
    Type: Application
    Filed: December 16, 2014
    Publication date: November 23, 2017
    Inventors: Hyung Don JOO, Hyung-Ki PARK, Jin-Wook SEO, Kyu-Seok HAN, Jae-Soo LIM, Hyun-Seok KO
  • Publication number: 20170271061
    Abstract: Disclosed are an oriented electrical steel sheet and a manufacturing method thereof. An exemplary embodiment of the present invention provides a method of manufacturing an oriented electrical steel sheet, including: providing a slab including Si at 1.0 to 4.0 wt %, C at 0.1 to 0.4 wt %, and the remaining portion including Fe and other inevitably incorporated impurities; reheating the slab; producing a hot rolled steel sheet by hot rolling the slab; performing annealing of the hot rolled steel sheet; cold rolling the annealed hot rolled steel sheet; decarburizing and annealing the cold rolled steel sheet; cold rolling the decarburized and annealed steel sheet; and final annealing the cold rolled steel sheet.
    Type: Application
    Filed: December 8, 2014
    Publication date: September 21, 2017
    Inventors: Hyun-Seok KO, Kyu-Seok HAN, Hyung-Ki PARK, Jin-Wook SEO, Jae-Soo LIM, Hyung Don JOO
  • Patent number: 9576876
    Abstract: The present invention relates to an organic-inorganic hybrid thin film and a method for preparing the same and more specifically to an organic-inorganic hybrid thin film including a stable new functional group and a method for preparing the organic-inorganic hybrid thin film that is formed by the molecular layer deposition method alternately using inorganic precursor and organic precursor.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: February 21, 2017
    Assignees: BASF Coatings GmbH, IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
    Inventors: Myung Mo Sung, Kyu Seok Han
  • Publication number: 20160276241
    Abstract: The present invention relates to an organic-inorganic hybrid thin film and a method for preparing the same and more specifically to an organic-inorganic hybrid thin film including a stable new functional group and a method for preparing the organic-inorganic hybrid thin film that is formed by the molecular layer deposition method alternately using inorganic precursor and organic precursor.
    Type: Application
    Filed: November 4, 2013
    Publication date: September 22, 2016
    Applicants: BASF Coatings GmbH, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Myung Mo SUNG, Kyu Seok HAN
  • Publication number: 20160215394
    Abstract: The present invention relates to a substrate structure in which organic-inorganic hybrid thin films are laminated and a method for preparing the same and more specifically to a substrate structure in which organic-inorganic hybrid thin films are laminated that can be used for light emitters, display devices and solar cell devices wherein the organic-inorganic hybrid thin film including a stable new functional group, an inorganic precursor and an organic precursor are alternately used to afford stability in air and a method for preparing the same.
    Type: Application
    Filed: November 4, 2013
    Publication date: July 28, 2016
    Applicants: BASF COATINGS GMBH, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
    Inventors: Myung Mo SUNG, Kyu Seok HAN
  • Publication number: 20160133365
    Abstract: Provided is a grain-oriented electric steel sheet having superior magnetic property and to a grain-oriented electric steel sheet including 2.0 to 4.5 weight % of Si, 0.001 to 0.10 weight % of C, 0.010 weight % or lower of Al, 0.08 weight % or lower of Mn, 0.005 weight % or lower of N, 0.002 to 0.050 weight % of S, the remainder being Fe and other unavoidable impurities. The steel sheet having been subjected to secondary recrystallization using at least any one of grain boundary-segregated elementary S and an FeS precipitate as a grain growth inhibitor.
    Type: Application
    Filed: December 9, 2015
    Publication date: May 12, 2016
    Inventors: Kyu-Seok Han, Jae-Soo Lim, Byung-Deug Hong, Chan-Hee Han
  • Patent number: 9240265
    Abstract: Provided is a grain-oriented electric steel sheet and a method for manufacturing same, the steel sheet having superior magnetic properties. The method comprises heating a slab comprising 2.0 to 4.5 weight % of Si, 0.001 to 0.10 weight % of C, 0.010 weight % or lower of Al, 0.08 weight % or lower of Mn, 0.005 weight % or lower of N, 0.002 to 0.050 weight % of S, the remainder being Fe and other unavoidable impurities, performing hot-rolling of the heated slab, performing cold-rolling one time or two or more times including an intermediate annealing, performing decarbonization and re-crystallizing annealing, and performing secondary re-crystallizing annealing.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: January 19, 2016
    Assignee: POSCO
    Inventors: Kyu-Seok Han, Jae-Soo Lim, Byung-Deug Hong, Chan-Hee Han