Patents Assigned to Posco
  • Publication number: 20130306202
    Abstract: Provided is a method for manufacturing a grain-oriented electrical steel sheet, the method comprising: heating a grain-oriented electrical steel sheet slab; hot-rolling the heated slab; optionally annealing the hot-rolled steel sheet; subjecting the resulting steel sheet to one cold rolling or two or more cold rollings with intermediate annealing therebetween; subjecting the cold-rolled steel sheet to primary recrystallization annealing; and subjecting the annealed steel sheet to secondary recrystallization annealing, wherein the primary recrystallization annealing sequentially comprises an ultra-rapid heating process of heating the steel sheet at an average heating rate of 300° C./sec or higher, a rapid heating process of heating the steel sheet at a lower average heating rate than the average heating rate of the ultra-rapid heating process, but not lower than 100° C.
    Type: Application
    Filed: December 16, 2011
    Publication date: November 21, 2013
    Applicant: POSCO
    Inventors: Hyung-Don Joo, Chang-Soo Kim, Jong-Tae Park, Jong-Ho Park, Byeong-Goo Kim, Jin-Wook Seo
  • Publication number: 20130309126
    Abstract: Provided is a martensitic stainless steel having excellent productivity and high corrosion resistance, which comprises, as percentages by weight, 0.45 to 0.60% carbon, 0.02 to 0.08% nitrogen, 0.2 to 0.4% silicon, 0.3 to 0.6% manganese, 12 to 15% chrome, one or more kinds of 0.1 to 1.5% molybdenum or 0.1 to 1.5% tungsten and Fe and other unavoidable impurities as remnants.
    Type: Application
    Filed: December 26, 2011
    Publication date: November 21, 2013
    Applicant: POSCO
    Inventors: Ki-Hoon Jo, Dong-Chul Chae, Won-Qeun Son, Bong-Wn Kim
  • Patent number: 8584923
    Abstract: An endless hot rolling material shear-joining method capable of threading hot rolling materials in a finish rolling process without strip breakage by controlling joining conditions for the hot rolling materials in an endless hot rolling process for high carbon steel, and an endless hot rolling plant therefor are disclosed. The shear-joining method for endless hot rolling materials of high carbon steel includes shear-joining high carbon steel metal bars comprising, in terms of weight %, 0.30% to 1.20% C, inevitable impurities, and balance Fe, or comprising 0.15% to 1.5% C containing at least one of Cr, Ni, Mo, V, Ti, W, B, Nb, and Sb, inevitable impurities, and balance Fe, such that a joined surface of the joined metal bars is formed to be inclined in a thickness direction of the metal bars, in a hot rolling plant by a joiner adapted to join the metal bars after overlapping tail part of a leading one of the metal bar and top part of a trailing metal bar.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: November 19, 2013
    Assignees: POSCO, Mitsubishi-Hitachi Metals
    Inventors: Jong-Sub Lee, Youn-Hee Kang, Chun-Soo Won, Jong-Bong Lee, Sang-Wook Ha, Kenji Horii, Toshihiro Usugi, Hideaki Furumoto, Shigenori Shirogane, Takao Funamoto
  • Patent number: 8585250
    Abstract: A first heat sinking path formed in a forming direction of a heat sink unit disposed radially in a housing where a light emitting module is mounted. A second heat sinking path is formed along an edge of the light emitting module. By providing a light engine concept in which a light emitting module, an optical member, and a heat sink unit are included and a bottom surface is gradually widened from one side to the other side, an optical semiconductor lighting apparatus can reduce a total weight of a product, can further improve heat dissipation efficiency by inducing natural convection, is simple in the product assembly and installation, and is easy in maintenance, and can provide products with high reliability by increasing the arrangement efficiency of semiconductor optical devices per unit area.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: November 19, 2013
    Assignee: Posco LED Company, Ltd.
    Inventors: Dong Soo Kim, Seok Jin Kang, Kyoo Seok Kim, Yoon Gil Jang, Dong Hee Kim, Seong Bok Yoon, Jung Hwa Kim
  • Publication number: 20130298628
    Abstract: An apparatus and method for manufacturing using a hydroforming process. The apparatus includes: upper and lower molds; first and second axial punches which are disposed on opposite sides of the steel substance so as to be movable towards each other and which have front surfaces configured so as to be insertable into each other; first and second pressurization cylinders which move the first and second axial punches towards each other and insert them into each other, thus forming a sealing space defined by the first and second axial punches and a pressurization space defined by the steel substance and the first and second axial punches; and a control unit which, through an oil-pressure passage formed in at least one of the first and second axial punches, supplies fluid into the pressurization space to pressurize the steel substance, thus forming the large caliber product.
    Type: Application
    Filed: January 24, 2011
    Publication date: November 14, 2013
    Applicant: POSCO
    Inventors: Gi Suk Chung, Han Ho Choi, Jin Ho Oh, Yeon Sik Kang
  • Publication number: 20130295402
    Abstract: Provided is a steel sheet for a formed member having enhanced ductility, a formed member, and a method for manufacturing the formed member, and more particularly, to a steel sheet for making a formed member having high strength and ductility such as an automotive structural member and a reinforcing member, a formed member, and a method for manufacturing the formed member. The steel sheet for a formed member has enhanced ductility, and includes, by weight %, C: 0.1% to 1.0%, Si+Al: 0.4% to 3.0%, Mn: 0.1% to 5.0%, P: 0.0001% to 0.1%, S: 0.0001% to 0.03%, N: 0.03% or less (but not 0%), and the balance of Fe and inevitable impurities. The formed member having high strength and ductility that can be used for forming an automotive structural member, a reinforcing member, etc. In addition, the formed member can be used for a heat-treatable impact resistant member.
    Type: Application
    Filed: December 14, 2011
    Publication date: November 7, 2013
    Applicant: POSCO
    Inventors: Jin-Keun Oh, Jai-Hyun Kwak, Yeol-Rae Cho, Ki-Soo Kim
  • Publication number: 20130295409
    Abstract: Provided is an austenitic, lightweight, high-strength steel sheet having a high yield ratio and ductility and a method for producing the same, and more particularly, to a high-strength steel sheet for automotive interior panels, exterior panels, and structural parts, and a method for producing the steel sheet. The steel sheet may be a hot-rolled steel sheet, a cold-rolled steel sheet, or a plated steel sheet. The steel sheet includes, by weight %, C: 0.6% to 1.0%, Si: 0.1% to 2.5%, Mn: 10% to 15%, P: 0.02% or less, S: 0.015% or less, Al: 5% to 8%, Ti: 0.01% to 0.20%, N: 0.02% or less, and the balance of Fe and inevitable impurities, wherein the steel sheet has a specific gravity of 7.4 g/cm3 and a Mn/Al ratio of 2 to 3.
    Type: Application
    Filed: December 12, 2011
    Publication date: November 7, 2013
    Applicant: POSCO
    Inventors: Kwang-Geun Chin, Sang-Ho Han, Jai-Hyun Kwak
  • Publication number: 20130292011
    Abstract: According to one aspect, provided is a high-strength steel sheet having superior toughness at cryogenic temperature, comprising, in weight percentage, 0.02 to 0.06% of C, 0.1 to 0.35% of Si, 1.0 to 1.6% of Mn, 0.02% or less (but not 0%) of Al, 0.7 to 2.0% of Ni, 0.4 to 0.9% of Cu, 0.003 to 0.015% of Ti, 0.003 to 0.02% of Nb, 0.01% or less of P, 0.005% or less of S, the remainder being Fe and unavoidable impurities, wherein the high-strength steel sheet satisfies the condition of [Mn]+5.4[Si]+26[Al]+32.8[Nb]<4.3 where [Mn], [Si], [Al], and [Nb] indicate contents of Mn, Si, Al, and Nb in weight percentage, respectively. The steel sheet secures toughness when used as structural steel materials for ships, offshore structures, or the like, or steel materials for tanks for storing and carrying liquefied gases, which are exposed to an extreme low temperature environment.
    Type: Application
    Filed: December 27, 2011
    Publication date: November 7, 2013
    Applicant: POSCO
    Inventors: Woo-Gyeom Kim, Sang-Ho Kim, Ki-Hyun Bang, In-Shik Suh
  • Publication number: 20130284324
    Abstract: Provided is a steel sheet for an oil sand slurry pipe having excellent abrasion resistance, corrosion resistance, and low-temperature toughness including 0.2 wt % to 0.35 wt % of carbon (C), 0.1 wt % to 0.5 wt % of silicon (Si), 0.5 wt % to 1.8 wt % of manganese (Mn), 0.1 wt % to 0.6 wt % of nickel (Ni), 0.005 wt % to 0.05 wt % of niobium (Nb), 0.005 wt % to 0.02 wt % of titanium (Ti), 0.03 wt % or less of phosphorous (P), 0.03 wt % or less of sulfur (S), 0.05 wt % or less (excluding 0 wt %) of aluminum (Al), 0.01 wt % or less (excluding 0 wt %) of nitrogen (N), and iron (Fe) as well as other unavoidable impurities as a remainder.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 31, 2013
    Applicant: POSCO
    Inventors: Seong-Ung Koh, Hwan-Gyo Jung
  • Publication number: 20130284713
    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: Application
    Filed: December 27, 2011
    Publication date: October 31, 2013
    Applicant: POSCO
    Inventors: Il-Wook Han, Bong-Keun Lee, Jeong-Kil Kim, Hong-Kil Lee
  • Publication number: 20130288073
    Abstract: There is provided a method and apparatus for plating high strength steel such as advanced high strength steel (AHSS) after irradiating the high strength steel with at least one of laser light and plasma to remove Si/Mn/Al oxides from the surface of the high strength steel, modify the surface of the high strength steel, or make the surface of the high strength steel suitable for a post process such as a zinc plating process. For this, a plating method includes heating high strength steel; treating a surface of the high strength steel with plasma to remove at least one of a Mn oxide, an Al oxide, and an Si oxide formed on the surface of the high strength steel during the heating of the high strength steel; and plating the surface-treated high strength steel.
    Type: Application
    Filed: December 27, 2011
    Publication date: October 31, 2013
    Applicant: POSCO
    Inventors: Hyun-Ju Jeong, Rho-Bum Park, Yeong-Seob Kueon, Hyeong-Jun Huh, Jin-Gun Jang
  • Publication number: 20130288046
    Abstract: The present invention provides a magnesium alloy with dense surface texture and its surface treatment method, and more particularly to a magnesium alloy and its surface treatment method, where the magnesium alloy includes: a parent material including magnesium or magnesium alloy; a surface-modified layer being formed on the surface of the parent material and containing Si; and a coating layer formed on the surface-modified layer, where the surface-modified layer comprises a “—Si—O—Mg—” structure.
    Type: Application
    Filed: December 28, 2011
    Publication date: October 31, 2013
    Applicant: POSCO
    Inventor: Young-Hee Park
  • Patent number: 8569252
    Abstract: Improved G-rich oligonucleotide (GRO) aptamers specific to nucleolin, a method of preparing the aptamers, and a use of the aptamers for diagnosing and/or treating a nucleolin-associated disease, are provided.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: October 29, 2013
    Assignees: Postech Academy-Industry Foundation, Posco
    Inventors: Jung-Hwan Lee, Soon-Hag Kim, Mi-Jin Kwon, Hyun-Gu Kang, Sung-Ho Ryu, Jong-In Kim, Youn-Dong Kim, Young-Chan Chae, Sung-Key Jang, Jong-Hun Im, Sun-Hak Lee, Hye-Jung Lee, Eun-Jung Jang, Ki-Seok Kim
  • Publication number: 20130279166
    Abstract: An optical semiconductor based illuminating apparatus includes a first unit which is disposed on an upper side of a housing and includes protrusions formed on a lower outer side of an optical member surrounding a semiconductor optical device and having an inclined surface inclined upwards from a lower edge of an optical member; and a second unit which accommodates and holds the first unit, so that it can reduce defect rate, improve assembly efficiency, and has excellent durability.
    Type: Application
    Filed: September 27, 2012
    Publication date: October 24, 2013
    Applicant: POSCO LED COMPANY LTD.
    Inventor: Min Uk YOO
  • Publication number: 20130280633
    Abstract: Provided is a fuel cell system in which a plurality of electricity generating units each including a unit cell in which an anode electrode and a cathode electrode are formed on both sides of an electrolyte film to use an electrochemical reaction of a fuel and an oxidizing agent to generate an electrical energy and a pair of separating plates which are disposed on both surfaces of the unit cell and have passages through which a fuel and an oxidizing agent are supplied to the anode electrode and the cathode electrode are laminated in which the electricity generating unit has a structure where a fuel flowing direction and/or a flowing direction of the fuel or the oxidizing agent are different between neighboring electricity generating units.
    Type: Application
    Filed: December 28, 2011
    Publication date: October 24, 2013
    Applicant: Posco
    Inventors: Seung Goo Kim, Choongmo Yang, Do Hyeong Kim, Joong Hwan Jun
  • Publication number: 20130280552
    Abstract: Provided is an aluminum coated steel sheet having excellent oxidation and heat resistance. The aluminum coated steel sheet includes an aluminum coating layer and an alloy layer. The aluminum coating layer is formed on a surface of a steel sheet which includes 0.001 to 0.015 wt % of carbon (C), 0.05 to 0.3 wt % of silicon (Si), 0.1 to 0.6 wt % of manganese (Mn), 0.01 to 0.05 wt % niobium (Nb), 0.01 wt % or less of phosphorus (P), 0.01 wt % or less of sulfur (S), 0.1 wt % or less of soluble aluminum (Al), 0.05 to 0.5 wt % of copper (Cu), 0.05 to 0.5 wt % nickel (Ni), 0.001 to 0.01 wt % of nitrogen (N), and the balance of Fe and inevitable impurities. The alloy layer includes an intermetallic compound at an interface between the steel sheet and the aluminum coating layer.
    Type: Application
    Filed: December 9, 2011
    Publication date: October 24, 2013
    Applicants: POSCO COATED & COLOR STEEL CO., LTD., POSCO
    Inventors: Dae-Chul Bae, Tae-Hun Lim, Young-Sool Jin
  • Publication number: 20130280634
    Abstract: The present invention relates to a unit cell of a metal-supported solid oxide fuel cell in which a manifold is formed integrally with electrodes, and includes a metal support; a first electrode formed on a surface of the metal support; an electrolyte formed on a surface of the first electrode; and a second electrode formed on a surface of the electrolyte and having a polarity opposed to that of the first electrode, wherein the metal support, the first electrode, the electrolyte, and the second electrode are formed with a manifold, a fluid passage. The present invention also relates to a method of manufacturing a unit cell of a metal-supported solid oxide fuel cell, and a stack using the solid oxide fuel cell.
    Type: Application
    Filed: December 28, 2011
    Publication date: October 24, 2013
    Applicant: POSCO
    Inventors: Young-Min Park, Jung-Hoon Song, Jin-Soo Ahn, Hong-Youl Bae
  • Publication number: 20130273456
    Abstract: Disclosed are a solid oxide fuel cell, a method of fabricating the same, and a tape casting apparatus for fabricating an anode. The solid oxide fuel cell includes an electrolyte film sheet, a cathode, and an anode, and the anode includes a catalyst active layer sheet for inducing a reforming reaction of the supplied fuel. The catalyst active layer sheet is formed by a tape casting method using a plurality of pieces of slurry having different catalyst contents, and the catalyst content within the catalyst active layer sheet is gradually changed in a flow direction of the fuel. In the solid oxide fuel cell, a temperature deviation of a unit cell is minimized by uniformly reforming the fuel in the flow direction of the fuel, thereby improving mechanical and chemical durability.
    Type: Application
    Filed: December 28, 2011
    Publication date: October 17, 2013
    Applicant: POSCO
    Inventors: Hongyoul Bae, Jung Hoon Song, Jin Soo Ahn, Young Min Park
  • Publication number: 20130251998
    Abstract: A graphene-coated steel sheet and a method for manufacturing the same are provided. The graphene-coated steel sheet includes a steel sheet and a graphene layer formed on the steel sheet. Therefore, the graphene-coated steel sheet can be useful in preventing corrosion of iron, such as oxidation of iron, and has remarkably excellent thermal conductivity and electrical conductivity, as well as excellent heat resistance resulting from thermal stability of graphene. Also, the method can be useful in manufacturing a high-quality graphene-coated steel sheet having a monocrystalline form and showing substantially no defects or impurities.
    Type: Application
    Filed: November 9, 2011
    Publication date: September 26, 2013
    Applicants: POSTECH ACADEMY-INDUSTRY FOUNDATION, POSCO
    Inventors: Chan Cuk Hwang, Yong Gyun Jung, Han Na Hwang, Jae In Jeong, Ji Hoon Yang
  • Publication number: 20130248059
    Abstract: A method for manufacturing a precipitation hardening cold-rolled steel sheet with an excellent yield ratio. The method may include the steps of hot rolling a steel slab with finish rolling at a temperature of Ar3 transformation point or more to form a hot-rolled steel sheet, coiling the hot-rolled steel sheet at a temperature of 550-600 ° C., cold rolling the hot-rolled steel sheet at a reduction ratio of 50% or more; and recovery-recrystallization annealing the cold-rolled steel sheet at a line speed of 150-200 mpm and at a temperature of 780-820° C. in a continuous annealing furnace. The recovery-recrystallization annealing may provide a recrystallization ratio of 65-75%. The steel slab includes, by weight %: C: 0.07-0.10%, Mn: 1.41-1.70%, P: 0.05-0.07%, S: 0.005% or less, N: 0.005% or less, acid-soluble Al: 0.10-0.15%, Nb: 0.06-0.09%, B: 0.0008-0.0012%, Sb: 0.02-0.06%, and the balance comprising Fe and other unavoidable impurities.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 26, 2013
    Applicant: POSCO
    Inventor: Sang-Ho Han