Patents by Inventor Mun-Jong Eom

Mun-Jong Eom 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: 20210017640
    Abstract: Provided is an apparatus and a method that is capable of performing continuous coating at a constant coating composition and rate. One embodiment is a deposition apparatus for coating two or more compounds or elements on a substrate, the apparatus comprising: a supply unit for supplying the two or more compounds or elements to a plurality of solid bodies; a heating unit for melting and evaporating the solid bodies supplied from the supply unit to form vapor; a buffer unit, connected to the heating unit, in which the vapor stays and is mixed with previously generated vapor; and a nozzle connected to the buffer unit and having an opening toward the substrate.
    Type: Application
    Filed: October 19, 2018
    Publication date: January 21, 2021
    Inventors: Kyung-Hoon NAM, Yong-Hwa JUNG, Mun-Jong EOM, Tae-Yeob KIM, Kyoung-Pil KO, Woo-Sung JUNG
  • Publication number: 20200086330
    Abstract: Provided is a filter unit including: a cyclone body member which receives fluid introduced thereinto in one direction and has a circular internal sectional shape to form a rotational flow of the fluid; and a discharge member which is disposed on a central upper end portion of the cyclone body member and has a cross section, at least a part of which has a noncircular shape, so as to reduce the rotational flow and then discharge the fluid.
    Type: Application
    Filed: May 23, 2017
    Publication date: March 19, 2020
    Inventors: Kyung-Hoon NAM, Sang-Joon KIM, Kyoung-Pil KO, Tae-Yeob KIM, Mun-Jong EOM
  • Publication number: 20200002803
    Abstract: Provided is a multilayer zinc alloy plated steel material comprising a base steel material and multiple plating layers formed on the base steel material, wherein each of the multiple plating layers includes one of a Zn plating layer, a Mg plating layer, and a Zn—Mg alloy plating layer, and the ratio of the weight of Mg contained in the multiple plating layers to the total weight of the multiple plating layers is from 0.13 to 0.24.
    Type: Application
    Filed: December 22, 2017
    Publication date: January 2, 2020
    Inventors: Young-Jin KWAK, Goo-Hwa KIM, Mun-Jong EOM, Seok-Jun HONG, Kyoung-Pil KO, Yong-Hwa JUNG, Dong-Yoeul LEE, Tae-Yeob KIM, Kyung-Hoon NAM
  • Patent number: 10196736
    Abstract: Provided are a heating apparatus configured to generate a coating vapor for coating a base metal (steel sheet) which is continuously transferred in a vacuum state, and a coating device including the heating apparatus. A coating material to be converted into a coating vapor is initially supplied in a solid phase (solid state) and then phase changed into a liquid (liquid state). Thereafter, the liquid-state coating material is supplied to a heating unit, thereby preventing problems such as equipment erosion occurring when a liquid coating material is directly supplied and preventing the decrease of the temperature of a coating material when a solid wire is supplied as a coating material. As a result, the energy efficiency of the heating apparatus may be maximized.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: February 5, 2019
    Assignee: POSCO
    Inventors: Yong-Hwa Jung, Kyung-Hoon Nam, Mun-Jong Eom, Woo-Sung Jung, Seok-Jun Hong, Young-Jin Kwak, Tae-Yeob Kim, Dong-Yoeul Lee
  • Publication number: 20190015845
    Abstract: Provided is a vacuum deposition device for high-speed coating, comprising: a vacuum chamber having a reception space arranged therein; an evaporation crucible disposed in the reception space to evaporate a coating material; and a cyclone filter disposed in the reception space, wherein the cyclone filter separates a coarse particle from steam generated during the evaporation of the coating material. Therefore, the vacuum deposition device for high-speed coating can remove a coarse particle generated in the high-speed coating, prevent the rotation of steam, using a baffle inserted between a steam ejection opening and an exit of the cyclone filter, and thus obtain a coating layer having the excellent uniformity of coating.
    Type: Application
    Filed: December 14, 2016
    Publication date: January 17, 2019
    Inventors: Kyung Hoon NAM, Sang Joon KIM, Kyoung Pil KO, Tae Yeob KIM, Mun Jong EOM
  • Patent number: 9982342
    Abstract: The present invention relates to a Zn—Mg alloy-coated steel sheet with excellent blackening resistance and excellent coating adhesion and to a method for manufacturing same. Provided are a Zn—Mg alloy-coated steel sheet with excellent blackening resistance and excellent adhesion and a method for manufacturing same, the steel sheet comprising: a substrate steel sheet; a Zn—Fe intermetallic compound layer formed on the substrate steel sheet; a first Zn—Mg coating layer formed on the Zn—Fe intermetallic compound layer and comprising a Zn—Fe intermetallic compound in which the content of Zn is 95% by weight or higher; a second Zn—Mg coating layer formed on the first Zn—Mg coating layer and comprising a Zn—Mg intermetallic compound in which the content of Zn is 80 to 95% by weight; and an oxide film formed on the second Zn—Mg coating layer and comprising a metallic oxide.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: May 29, 2018
    Assignee: POSCO
    Inventors: Dong-Yoeul Lee, Kyung-Hoon Nam, Yong-Hwa Jung, Seok-Jun Hong, Tae-Yeob Kim, Young-Jin Kwak, Mun-Jong Eom, Woo-Sung Jung
  • Patent number: 9957619
    Abstract: A phosphate solution for a zinc or zinc-based alloy plated steel sheet, and a zinc or zinc-based alloy plated steel sheet using the same are provided. The phosphate solution for a zinc or zinc-based alloy plated steel sheet contains a molybdenum (Mo) ion, a calcium (Ca) ion and a phosphate ion. A zinc or zinc-based alloy plated steel sheet includes a base steel sheet, a zinc-based or zinc alloy-based plating layer formed on the base steel sheet, and a phosphate film formed on the zinc-based or zinc alloy-based plating layer. The phosphate film contains a molybdenum compound, Ca and a phosphate. A pitting phenomenon occurring at the time of treating a steel sheet with a phosphate is prevented, and excellent corrosion resistance is exhibited on a phosphate film.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: May 1, 2018
    Assignee: POSCO
    Inventors: Young-Jin Kwak, Kyung-Hoon Nam, Yong-Hwa Jung, Tae-Yeob Kim, Dong-Yoeul Lee, Seok-Won Cho, Young-Ra Lee, Mun-Jong Eom, Woo-Sung Jung, Seok-Jun Hong, Jae-Kyu Min, Hong-Kyun Sohn
  • Publication number: 20170350029
    Abstract: The present invention relates to a plated steel sheet, which can be used for vehicles, home appliances, construction materials and the like, and to a method for manufacturing the plated steel sheet.
    Type: Application
    Filed: December 22, 2015
    Publication date: December 7, 2017
    Inventors: Seok-Jun HONG, Kyung-Hoon NAM, Mun-Jong EOM, Sang-Hoon PARK
  • Patent number: 9744743
    Abstract: Provided are a Zn—Mg alloy plated steel sheet and a method for manufacturing same. The Zn—Mg alloy plated steel sheet comprises a base steel sheet and a Zn—Mg plating layer formed on the base steel sheet, wherein the content of Mg in the Zn—Mg plating layer is 8 weight % or less (provided that 0 weight % is excluded), and the Zn—Mg plating layer is a compound phase of Zn and Mg2Zn11. According to the present invention, provided are a Zn—Mg alloy plated steel sheet and a method for manufacturing the same, wherein the Zn—Mg alloy plated steel sheet has excellent corrosion resistance, high adhesion, and superior surface quality of metallic luster.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: August 29, 2017
    Assignee: POSCO
    Inventors: Woo-Sung Jung, Seok-Jun Hong, Kyung-Hoon Nam, Dong-Yoeul Lee, Yong-Hwa Jung, Young-Jin Kwak, Mun-Jong Eom, Tae-Yeob Kim
  • Patent number: 9732423
    Abstract: Provided is a dry coating apparatus for coating a coating material, i.e., deposition vapor (metal vapor) on a substrate (a steel strip). The dry coating apparatus includes a coating part disposed in a vacuum to coat deposition vapor generated through heating and evaporation of a supplied coating material onto a proceeding object to be coated and a heating source disposed in an atmosphere to heat and levitate the coating material in the coating part.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: August 15, 2017
    Assignee: POSCO
    Inventors: Kyung-Hoon Nam, Mun-Jong Eom, Young-Jin Kwak, Woo-Sung Jung, Tae-Yeob Kim, Dong-Yoeul Lee, Seok-Jun Hong, Kyoung-Bo Kim, Yong-Hwa Jung, Sang-Hoon Park, Sang-Cheol Lee, Yang-Woo Nam
  • Publication number: 20160355926
    Abstract: The present invention relates to a Zn—Mg alloy-coated steel sheet with excellent blackening resistance and excellent coating adhesion and to a method for manufacturing same. Provided are a Zn—Mg alloy-coated steel sheet with excellent blackening resistance and excellent adhesion and a method for manufacturing same, the steel sheet comprising: a substrate steel sheet; a Zn—Fe intermetallic compound layer formed on the substrate steel sheet; a first Zn—Mg coating layer formed on the Zn—Fe intermetallic compound layer and comprising a Zn—Fe intermetallic compound in which the content of Zn is 95% by weight or higher; a second Zn—Mg coating layer formed on the first Zn—Mg coating layer and comprising a Zn—Mg intermetallic compound in which the content of Zn is 80 to 95% by weight; and an oxide film formed on the second. Zn—Mg coating layer and comprising a metallic oxide.
    Type: Application
    Filed: August 16, 2016
    Publication date: December 8, 2016
    Inventors: Dong-Yoeul LEE, Kyung-Hoon NAM, Yong-Hwa JUNG, Seok-Jun HONG, Tae-Yeob KIM, Young-Jin KWAK, Mun-Jong EOM, Woo-Sung JUNG
  • Publication number: 20160312356
    Abstract: Provided are a heating apparatus for generating coating steam (gas) for deposition coating of a continuously moving base material (steel plate), and a coating machine having the heating apparatus. According to the present invention, a liquid-state supply scheme is adopted, and a supplied solid-state coating substance is contained inside a nozzle means and then heated such that a liquid-state coating substance is supplied to a heating unit; accordingly, smooth and stable generation of coating steam is made possible, preheating and supply of a solid-state coating substance is additionally implemented, and clogging of a supply tube is prevented, thereby ultimately improving the coating quality of a fast moving steel plate or the workability.
    Type: Application
    Filed: December 19, 2013
    Publication date: October 27, 2016
    Applicant: POSCO
    Inventors: Yong-Hwa JUNG, Woo-Sung JUNG, Kyung-Hoon NAM, Mun-Jong EOM, Seok-Jun HONG, Young-Jin KWAK, Tae-Yeob KIM, Dong-Yoeul LEE
  • Patent number: 9441302
    Abstract: Provided is a method for manufacturing a Zn—Mg alloy-coated steel sheet having high blackening resistance and coating adhesion. In one implementation, the method may include forming a Zn—Mg coating layer on a base steel sheet and performing a combustion chemical vapor deposition (CCVD) process to form an oxide film. The oxide film may include a metal oxide and the metal oxide may include silicon oxide (SiO2) and magnesium oxide (MgO). The base steel sheet may be maintained within a temperature range of 330° C. to 450° C. during the performing of the CCVD process.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: September 13, 2016
    Assignee: POSCO
    Inventors: Dong-Yoeul Lee, Kyung-Hoon Nam, Yong-Hwa Jung, Seok-Jun Hong, Tae-Yeob Kim, Young-Jin Kwak, Mun-Jong Eom, Woo-Sung Jung
  • Patent number: 9296903
    Abstract: Provided is a film formation composition for improving the blackening of the surface of a steel sheet, particularly, the surface of a steel sheet containing Mg on the surface thereof, such as a Mg sheet, a plated steel sheet having a plated layer comprising Mg, and the like, a steel sheet comprising a film formed by the composition, and a method for forming the film. Provided are a film formation composition for preventing the blackening of the surface of the steel sheet, comprising: 2.5-7.5 parts by weight of a water-soluble phenoxy resin; 0.1-0.5 parts by weight of a fluorometal acid; 0.1-0.5 parts by weight of a metal compound; and 1-5 parts by weight of a cross-linking agent.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: March 29, 2016
    Assignees: POSCO, NOROO COIL COATINGS CO., LTD.
    Inventors: Young-Jin Kwak, Dong-Yun Kim, Woo-Sung Jung, Kyung-Hoon Nam, Dong-Yoeul Lee, Seok-Jun Hong, Tae-Yeob Kim, Yong-Hwa Jung, Mun-Jong Eom, Myoung-Hee Choi, Gab-Yong Kim, Sang-Hoon Park, Sang-Cheol Lee, Yang-Woo Nam
  • Patent number: 9267203
    Abstract: Provided is a continuous coating apparatus which can supply a liquid coating material (a molten metal) to a levitation-heating space through various paths, and can easily control a supply flow rate of the liquid coating material, and has a simplified structure. The continuous coating apparatus includes: a vacuum chamber unit through which a coating target passes; a levitation-heating unit disposed in the vacuum chamber unit and generating an evaporation vapor by vaporizing a supplied coating material; and a liquid coating material supply unit connected so that a liquid coating material is supplied to at least one of an upper portion and a lower portion of the levitation-heating unit, and communicating with the outside of the vacuum chamber unit.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: February 23, 2016
    Assignee: POSCO
    Inventors: Kyung-Hoon Nam, Young-Jin Kwak, Dong-Yoeul Lee, Tae-Yeob Kim, Yong-Hwa Jung, Kyoung-Bo Kim, Woo-Sung Jung, Mun-Jong Eom, Sang-Cheol Lee, Sang-Hoon Park
  • Publication number: 20150352812
    Abstract: Provided are a Zn—Mg alloy plated steel sheet and a method for manufacturing same. The Zn—Mg alloy plated steel sheet comprises a base steel sheet and a Zn—Mg plating layer formed on the base steel sheet, wherein the content of Mg in the Zn—Mg plating layer is 8 weight % or less (provided that 0 weight % is excluded), and the Zn—Mg plating layer is a compound phase of Zn and Mg2Zn11. According to the present invention, provided are a Zn—Mg alloy plated steel sheet and a method for manufacturing the same, wherein the Zn—Mg alloy plated steel sheet has excellent corrosion resistance, high adhesion, and superior surface quality of metallic luster.
    Type: Application
    Filed: December 28, 2012
    Publication date: December 10, 2015
    Applicant: POSCO
    Inventors: Woo-Sung JUNG, Seok-Jun HONG, Kyung-Hoon NAM, Dong-Yoeul LEE, Yong-Hwa JUNG, Young-Jin KWAK, Mun-Jong EOM, Tae-Yeob KIM
  • Publication number: 20150345008
    Abstract: Provided are a heating apparatus configured to generate a coating vapor for coating a base metal (steel sheet) which is continuously transferred in a vacuum state, and a coating device including the heating apparatus. A coating material to be converted into a coating vapor is initially supplied in a solid phase (solid state) and then phase changed into a liquid (liquid state). Thereafter, the liquid-state coating material is supplied to a heating unit, thereby preventing problems such as equipment erosion occurring when a liquid coating material is directly supplied and preventing the decrease of the temperature of a coating material when a solid wire is supplied as a coating material. As a result, the energy efficiency of the heating apparatus may be maximized.
    Type: Application
    Filed: December 19, 2013
    Publication date: December 3, 2015
    Inventors: Yong-Hwa JUNG, Kyung-Hoon NAM, Mun-Jong EOM, Woo-Sung JUNG, Seok-Jun HONG, Young-Jin KWAK, Tae-Yeob KIM, Dong-Yoeul LEE
  • Publication number: 20150329972
    Abstract: A phosphate solution for a zinc or zinc-based alloy plated steel sheet, and a zinc or zinc-based alloy plated steel sheet using the same are provided. The phosphate solution for a zinc or zinc-based alloy plated steel sheet contains a molybdenum (Mo) ion, a calcium (Ca) ion and a phosphate ion. A zinc or zinc-based alloy plated steel sheet includes a base steel sheet, a zinc-based or zinc alloy-based plating layer formed on the base steel sheet, and a phosphate film formed on the zinc-based or zinc alloy-based plating layer. The phosphate film contains a molybdenum compound, Ca and a phosphate. A pitting phenomenon occurring at the time of treating a steel sheet with a phosphate is prevented, and excellent corrosion resistance is exhibited on a phosphate film.
    Type: Application
    Filed: December 28, 2012
    Publication date: November 19, 2015
    Applicant: POSCO
    Inventors: Young-Jin KWAK, Kyung-Hoon NAM, Yong-Hwa JUNG, Tae-Yeob KIM, Dong-Yoeul LEE, Seok-Won CHO, Young-Ra LEE, Mun-Jong EOM, Woo-Sung JUNG, Seok-Jun HONG, Jae-Kyu MIN, Hong-Kyun SOHN
  • Publication number: 20150030875
    Abstract: The present invention relates to a Zn—Mg alloy-coated steel sheet with excellent blackening resistance and excellent coating adhesion and to a method for manufacturing same. Provided are a Zn—Mg alloy-coated steel sheet with excellent blackening resistance and excellent adhesion and a method for manufacturing same, the steel sheet comprising: a substrate steel sheet; a Zn—Fe intermetallic compound layer formed on the substrate steel sheet; a first Zn—Mg coating layer formed on the Zn—Fe intermetallic compound layer and comprising a Zn—Fe intermetallic compound in which the content of Zn is 95% by weight or higher; a second Zn—Mg coating layer formed on the first Zn—Mg coating layer and comprising a Zn—Mg intermetallic compound in which the content of Zn is 80 to 95% by weight; and an oxide film formed on the second Zn—Mg coating layer and comprising a metallic oxide.
    Type: Application
    Filed: December 27, 2012
    Publication date: January 29, 2015
    Inventors: Dong-Yoeul Lee, Kyung-Hoon Nam, yong-Hwa Jung, Seok-Jun Hong, Tae-Yeob Kim, Young-Jin Kwak, Mun-Jong Eom, Woo-Sung Jung
  • Patent number: 8926756
    Abstract: A passing apparatus includes: upper and lower sealing rolls dealing with variations in a thickness of a proceeding strip, the upper and lower sealing rolls allowing the strip to pass; and a strip sealing unit dealing with variations in a width of the proceeding strip, the strip sealing unit cooperating with the upper and lower sealing rolls to seal the proceeding strip passing through a chamber in a state in which the strip sealing unit surrounds the proceeding strip.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: January 6, 2015
    Assignee: Posco
    Inventors: Dong-Yoeul Lee, Mun-Jong Eom, Kyoung-Bo Kim, Yong-Hwa Jung, Woo-Sung Jung, Young-Jin Kwak, Tae-Yeob Kim, Kyung-Hoon Nam, Sang-Cheol Lee, Sang-Hoon Park, Yang-Woo Nam