Patents Assigned to Posco
  • METAL ENCAPSULANT HAVING GOOD HEAT DISSIPATION PROPERTIES, METHOD OF MANUFACTURING SAME, AND FLEXIBLE ELECTRONIC DEVICE ENCAPSULATED IN SAID METAL ENCAPSULANT
    Publication number: 20160359134
    Abstract: The present invention relates to a metal encapsulant having good heat dissipation properties, a method of manufacturing same, and a flexible electronic device encapsulated in said metal encapsulant, and particularly, to a metal encapsulant having excellent flexibility, moisture resistance, workability, and heat dissipation properties by forming a coating layer including a metal graphite composite on one surface thereof, to a method of manufacturing same, and a flexible electronic device encapsulated in said metal encapsulant.
    Type: Application
    Filed: December 19, 2014
    Publication date: December 8, 2016
    Applicant: POSCO
    Inventors: Young-Jun PARK, Kyoung-Bo KIM, Moo-Jin KIM, Soo-Cherl LEE, Jae-Ryung LEE
  • QUENCHED STEEL SHEET HAVING EXCELLENT STRENGTH AND DUCTILITY AND METHOD FOR MANUFACTURING SAME
    Publication number: 20160348207
    Abstract: Disclosed are a quenched steel sheet and a method for manufacturing the same. The quenched steel sheet according to an aspect of the present invention contains, in terms of wt %, C: 0.05˜0.25%, Si: 0.5% or less (excluding 0), Mn: 0.1˜2.0%, P: 0.05% or less, S: 0.03% or less, the remainder Fe, and other unavoidable impurities, wherein a refined structure of the steel sheet comprises 90 volume % or more of martensite with a first hardness and martensite with a second hardness.
    Type: Application
    Filed: December 24, 2013
    Publication date: December 1, 2016
    Applicants: POSCO, POSCO
    Inventors: Kyong-Su PARK, Jae-Hoon JANG
  • Apparatus for compensating for ripple and offset of inverter and method therefor
    Patent number: 9509207
    Abstract: An apparatus and method for compensating for a ripple and offset of an inverter and an apparatus and method for compensating for a ripple and offset of an inverter which removes a ripple component by compensating for an offset component included in a signal input to the inverter from an inverter controller. A method that senses a direct current (DC) input to an inverter from an inverter controller and an alternating current (AC) output from the inverter and removes a ripple component included in the DC based on the sensed currents, a method that removes a ripple component included in a reference voltage that is output from an inverter controller and is input to an inverter, and a method that compensates for an offset component of an AC voltage/AC used for inverter control and reduces a ripple component corresponding to an output frequency of an inverter.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: November 29, 2016
    Assignee: POSCO ENERGY CO., LTD
    Inventors: Jeong Heum Lee, Sang Ho Moon, Ju Young Chang, Jae Sig Kim
  • Flux-cored arc welding wire for providing superior toughness and weldability to a welded joint at a low temperature, and welded joint using same
    Patent number: 9492894
    Abstract: Provided are a flux cored arc welding wire able to improve low-temperature toughness of a weld joint and a weld joint using the same, in which the flux cored arc welding wire includes 0.01 wt % to 0.1 wt % of carbon (C), 0.3 wt % to 1.4 wt % of silicon (Si), 1.0 wt % to 3.0 wt % of manganese (Mn), 4.0 wt % to 7.5 wt % of titanium (Ti)+TiO, 0.01 wt % to 3.0 wt % of nickel (Ni), 0.01 wt % to 0.2 wt % of boron (B), 0.02 wt % to 0.42 wt % of yttrium (Y) or 0.02 wt % to 0.56 wt % of a rare earth metal (REM), and iron (Fe) as well as other unavoidable impurities as a remainder.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: November 15, 2016
    Assignee: POSCO
    Inventors: Il-Wook Han, Bong-Keun Lee, Jeong-Kil Kim, Hong-Kil Lee
  • MAGNESIUM-ALUMINUM COATED STEEL SHEET AND MANUFACTURING METHOD THEREOF
    Publication number: 20160326607
    Abstract: An exemplary embodiment of the present invention provides a coated steel sheet on which a magnesium-aluminum alloy coating layer is formed, including: a steel sheet; and a coating layer configured to include a first magnesium-aluminum alloy layer formed on a top surface of the steel sheet and a second magnesium-aluminum alloy layer formed on a top surface of the first magnesium-aluminum alloy layer, wherein a magnesium content of the first magnesium-aluminum alloy layer is higher than that of the second magnesium-aluminum alloy layer.
    Type: Application
    Filed: December 17, 2014
    Publication date: November 10, 2016
    Applicants: POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Jae In JEONG, Ji Hoon YANG, Tae Yeob KIM, Yong Hwa JUNG
  • NONCOVALENT BOND-MODIFIED CARBON STRUCTURE, AND CARBON STRUCTURE/POLYMER COMPOSITE COMPRISING SAME
    Publication number: 20160326393
    Abstract: According to the present invention, a noncovalent bond-modified carbon structure has advantages of: enabling the control of properties by controlling intervals between carbon structures according to the size and structure of a compound represented by Chemical Formula 1, which is inserted and adsorbed between the carbon structures; and enabling uniform dispersion in a polymer matrix without a change in intrinsic properties. In addition, a carbon structure/polymer composite comprising the modified carbon structure and a polymer matrix is simply manufactured and readily layered due to excellent orientation when forming a cured coating film, and thus can be useful for manufacturing a steel sheet having remarkable heat radiation, surface polarity, electrical properties and the like.
    Type: Application
    Filed: December 24, 2014
    Publication date: November 10, 2016
    Applicants: POSCO, POSCO
    Inventors: Yong-Gyun JUNG, Hye Jin YOO, Jung-Su KIM, Jong Sang KIM, Chang-Se BYEON
  • Steel strip stabilization device
    Patent number: 9487853
    Abstract: Provided is a steel strip stabilizing apparatus which allows shape correction and vibration suppression in a steel strip, particularly, plated steel strip, in a non-contact manner. The steel strip stabilizing apparatus includes an apparatus support body disposed on at least one side of a traveling steel strip and a steel strip stabilizing unit comprising a magnetic field generating pole disposed on the apparatus support body to face the steel strip and a pole expansion part configured to provide steel strip attraction force to a steel strip-side end of the magnetic field generating pole so as to allow shape correction or vibration suppression in the steel strip.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: November 8, 2016
    Assignee: POSCO
    Inventors: Tae-In Jang, Chang-Woon Jee, Yong-Hun Kweon
  • ROLLING APPARATUS, CONTINUOUS CASTING AND ROLLING APPARATUS AND METHOD
    Publication number: 20160318081
    Abstract: A hot rolling device, according to one embodiment of the present invention, may comprise: a cast part supply portion for producing a cast part; a hot roller, linked to the cast part supply portion, for receiving and hot-rolling the cast part; and a heating unit, arranged between the cast part supply portion and the hot roller, for reheating an outer surface portion in the widthwise direction of the cast part while latent heat is maintained in the center portion of the widthwise direction of the cast part from preheating.
    Type: Application
    Filed: December 26, 2013
    Publication date: November 3, 2016
    Applicants: POSCO, POSCO
    Inventors: Jea-Sook CHUNG, Il-Sin BAE, Young-Ju KO, Kyeong-Mi PARK, In-Jae LEE, Choong-Yun LEE, Suk-Cheol SONG, Seong-Yeon KIM, Jong-Yeon HWANG, Sang-Hyeon LEE
  • CONTINUOUS CASTING AND ROLLING APPARATUS AND METHOD
    Publication number: 20160318096
    Abstract: A continuous casting and rolling apparatus according to one embodiment of the present invention provides: a continuous caster for generating a steel sheet; a first rolling unit associated with the continuous caster; and a second rolling unit which is spaced apart in the outlet of the first rolling unit and comprises: a rolling mill for pressing down the steel sheet; and a cutter for cutting a portion of the steel sheet, wherein the cutter is spaced from the second rolling unit by a length corresponding to the length of the steel sheet discharged in an at least discontinuous rolling mode, and may comprise a cut withdrawal unit provided between the first rolling unit and the second rolling unit.
    Type: Application
    Filed: December 2, 2014
    Publication date: November 3, 2016
    Applicant: POSCO
    Inventors: Seong-Yeon KIM, Young-Ju KO, Il-Sin BAE, Choong-Yun LEE, In-Jae LEE, Jea-Sook CHUNG, Sang-Hyeon LEE
  • HOT DIP GALVANIZED STEEL SHEET HAVING EXCELLENT RESISTANCE TO CRACKING DUE TO LIQUID METAL EMBRITTLEMENT
    Publication number: 20160319415
    Abstract: A hot-dip galvanized steel sheet having excellent resistance to cracking caused by liquid metal embrittlement is provided. The hot-dip galvanized steel sheet having excellent resistance to cracking caused by liquid metal embrittlement includes a base steel sheet having a microstructure in which an austenite fraction is 90 area % or more; and a hot-dip galvanizing layer formed on the base steel sheet, wherein the hot-dip galvanizing layer includes an Fe—Zn alloy layer; and a Zn layer formed on the Fe—Zn alloy layer, and the Fe—Zn alloy layer has a thickness of [(3.4×t)/6] ?m or more, where t is a thickness of the hot-dip galvanizing layer. In addition, provided is the hot-dip galvanized steel sheet in which plating layer delamination easily occurring in vehicle welding and molding conditions according to the related art, is prevented, and cracking caused by liquid metal embrittlement is suppressed.
    Type: Application
    Filed: December 24, 2014
    Publication date: November 3, 2016
    Applicant: POSCO
    Inventors: Ju-Youn LEE, Kwang-Geun CHIN, Sun-Ho JEON, Jong-Sang KIM, Myung-Soo KIM
  • WELDING MATERIAL FOR HEAT RESISTANT STEEL
    Publication number: 20160318133
    Abstract: A welding material for heat resistant steel comprises: flux and a sheath surrounding the flux. The welding material comprises, by wt %, carbon (C): 0.03% to 0.3%, manganese (Mn): 0.5% to 3.0%, silicon (Si): 0.1% to 2.0%, phosphorus (P): 0.01% or less, sulfur (S): 0.01% or less, nickel (Ni): 20% to 40%, chromium (Cr): 15% to 35%, TiO2: 3% to 7%, SiO2: 0.5% to 2.5%, ZrO2: 0.5% to 2.5%, and a balance of Fe and inevitable impurities. The sheath comprises an Ni—Fe-based alloy having a nickel content of 30% to 50%.
    Type: Application
    Filed: December 24, 2013
    Publication date: November 3, 2016
    Applicant: POSCO
    Inventors: Il-Wook HAN, Jeong-Kil KIM, Bong-Keun LEE, Sang-Chul LEE
  • COLOR-TREATED BASE MATERIAL AND BASE MATERIAL COLOR TREATMENT METHOD THEREFOR
    Publication number: 20160319437
    Abstract: This color-treated base material, which comprises a matrix comprising magnesium, a film formed on the matrix and containing a compound represented by chemical formula 1, and a wavelength conversion layer formed on the film, can improve the durability of the base material while maintaining the unique metal texture and gloss of the base material and can uniformly realize various colors, such as blue and green, including an achromatic color such as black, on the surface of the base material and thus can be usefully used in the fields of building exterior materials, automobile interiors, and particularly electrical/electronic component materials, such as mobile product frames, in which a metal material is used.
    Type: Application
    Filed: December 26, 2014
    Publication date: November 3, 2016
    Applicant: POSCO
    Inventors: Hyunju JEONG, Kyoung-Bo KIM, Yon-Kyun SONG, Jeong-Hee LEE, Yun Ha YOO
  • APPARATUS AND METHOD FOR TRIMMING A SIDE OF STEEL PLATE
    Publication number: 20160318121
    Abstract: A side trimming apparatus including a cutting unit which is installed on at least one side of a steel plate being transferred and trims a side of the steel plate by mechanical cutting and a laser processing unit which is installed in front of the cutting unit and emits a laser beam to a portion of the steel plate to be cut to form a groove at the portion to be cut or preheat the portion to be cut, and a side trimming method using the same are provided.
    Type: Application
    Filed: December 26, 2013
    Publication date: November 3, 2016
    Applicant: POSCO
    Inventors: Choong Soo LIM, Hyeong Jun HUH, Sung Joon KWAK, Sang Ho PARK
  • Nanoplatelet-type zirconium phosphate and method for preparing same
    Patent number: 9481936
    Abstract: A platelet-type zirconium phosphate, which has a P—OH group contained in a structure thereof, and has a crystalline peak at a 2? value of 11.6±2 degrees and no crystalline peak at a 2? value of less than 11.6±2 degrees in X-ray diffraction analysis, is provided. The platelet-type zirconium phosphate has a platelet-type structure and can be uniformly dispersed at a nanoscale level in a coating film to exhibit excellent surface gloss and barrier capability. Also, the platelet-type zirconium phosphate can exhibit excellent corrosion resistance due to the presence of the P—OH group on a surface thereof, and can be dispersed not only in an aqueous solution but also in an organic solvent.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: November 1, 2016
    Assignee: POSCO
    Inventors: Bongwoo Ha, Jin Tae Kim, Jong Sang Kim, Yang-Ho Choi
  • HEATING APPARATUS AND COATING MACHINE HAVING SAME
    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
  • MOLTEN STEEL TREATMENT APPARATUS AND MOLTEN STEEL TREATMENT METHOD
    Publication number: 20160298906
    Abstract: Provided are a molten steel treatment apparatus and a molten steel treatment method capable of quickly measuring an inclusion adhesion state inside a nozzle during an operation. The molten steel treatment apparatus includes a container, a nozzle equipped in a molten steel tap hole of the container, a liner disposed on a portion of an inner circumferential surface of the nozzle and formed of an ion-conductive material, a power supply for applying electric power to the molten steel and the liner, and a measuring unit for measuring a voltage value or a current value between the molten steel and the liner. The molten steel treatment method includes measuring a voltage value or current value between the molten steel and the liner; and determining a thickness of an inclusion adhering to an interface between the molten steel and the liner by using the voltage value or the current value.
    Type: Application
    Filed: December 24, 2013
    Publication date: October 13, 2016
    Applicant: POSCO
    Inventor: Wook KIM
  • Method for preparing electrode active material for rechargeable lithium battery, electrode active material for rechargeable lithium battery, and rechargeable lithium battery
    Patent number: 9466828
    Abstract: Disclosed is a method for preparing an electrode active material for a rechargeable lithium battery, including: performing first mixing to mix a carbon-based active material with a low crystalline carbon material; performing second mixing to mix the mixture of the carbon-based active material and the low crystalline carbon material with a ceramic; and performing a heat treatment, an electrode for a rechargeable lithium battery including the electrode active material for the rechargeable lithium battery prepared by the method, and a rechargeable lithium battery.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: October 11, 2016
    Assignee: POSCO CHEMTECH CO., LTD.
    Inventors: Mi Ryeong Lee, Heon Young Lee, Kyoung Muk Lee
  • APPARATUS FOR COMPENSATING FOR RIPPLE AND OFFSET OF INVERTER AND METHOD THEREFOR
    Publication number: 20160285355
    Abstract: An apparatus and method for compensating for a ripple and offset of an inverter and an apparatus and method for compensating for a ripple and offset of an inverter which removes a ripple component by compensating for an offset component included in a signal input to the inverter from an inverter controller. A method that senses a direct current (DC) input to an inverter from an inverter controller and an alternating current (AC) output from the inverter and removes a ripple component included in the DC based on the sensed currents, a method that removes a ripple component included in a reference voltage that is output from an inverter controller and is input to an inverter, and a method that compensates for an offset component of an AC voltage/AC used for inverter control and reduces a ripple component corresponding to an output frequency of an inverter.
    Type: Application
    Filed: November 14, 2013
    Publication date: September 29, 2016
    Applicant: POSCO ENERGY CO., LTD.
    Inventors: Jeong Heum LEE, Sang Ho MOON, Ju Young CHANG, Jae Sig KIM
  • POWDER MANUFACTURING APPARATUS AND POWDER FORMING METHOD
    Publication number: 20160279712
    Abstract: The present invention provides a power manufacturing apparatus capable of preventing particle growth when fine powder is formed through a fluid, the apparatus comprising: a molten steel providing part for providing molten steel; and a cooling fluid spraying part which is arranged at a lower part of the molten steel providing part and sprays a cooling fluid on the molten steel in order to pulverize the molten steel provided by the molten steel providing part, wherein the cooling fluid spraying part forms a first flow for cooling the molten steel so as to pulverize the molten steel and a second flow for forming a descending air current in the molten steel.
    Type: Application
    Filed: December 24, 2013
    Publication date: September 29, 2016
    Applicants: POSCO, POSCO
    Inventors: Tae-Jong HA, Si-Won YOON, Hae-Kwon JEONG
  • Insulation coating composition for non-oriented electrical sheet, method for manufacturing the same, and non-oriented electrical sheet to which insulation coating composition is applied
    Patent number: 9455062
    Abstract: Disclosed is an insulating film composition of a non-oriented electrical steel sheet. The insulating film composition of a non-oriented electrical steel sheet according to the present invention comprises a mixed metal phosphate consisting of aluminum phosphate (Al(H3PO4)x=1-3) and cobalt phosphate (Co(H3PO4)3), and an organic/inorganic composite consisting of epoxy resin and silica (SiO2) nanoparticle substituted on the functional group of the epoxy resin.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: September 27, 2016
    Assignee: POSCO
    Inventors: Jung-Woo Kim, Min Serk Kwon, Heon-Jo Choi