Patents Assigned to Posco
  • Ferritic stainless steel for automotive exhaust system, which have excellent corrosion resistance against condensate, moldability, and high-temperature oxidation resistance, and method for manufacturing same
    Patent number: 10138796
    Abstract: Provided is a ferritic stainless steel having excellent corrosion resistance against condensate, moldability, and high-temperature oxidation resistance, wherein the ferritic stainless steel is capable of being manufactured in an economically advantageous manner without adding expensive alloying elements. The ferritic stainless steel includes, by weight %, C: greater than 0 and 0.01% or less, Cr: 9 to 13%, Si: 0.5 to 1.0%, Mn: greater than 0 and 0.5% or less, P: greater than 0 and 0.035% or less, S: greater than 0 and 0.01% or less, Ti: 0.15 to 0.5%, N: greater than 0 and 0.01% or less, Sn: 0.05 to 0.5%, and the remainder is Fe and inevitable impurities, wherein Sn concentrated at the surface part of the stainless steel is 10 times or more than Sn concentrated at the base part.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: November 27, 2018
    Assignee: POSCO
    Inventors: Han Jin Ryu, Gi Sun Tae, Hyung Gu Kang, Hun Jae Ha
  • High silicon steel sheet having excellent productivity and magnetic properties and method for manufacturing same
    Patent number: 10134513
    Abstract: Provided is a method for manufacturing a high silicon steel sheet having excellent producibility and magnetic properties. The method includes: casting a molten metal as a strip having a thickness of 5 mm or less, the molten metal comprising, by weight %, C: 0.05% or less (excluding 0%), N: 0.05% or less (excluding 0%), Si: 4% to 7%, Al: 0.5% to 3%, Si+Al: 4.5% to 8%, and the balance of Fe and inevitable impurities; hot-rolling the cast strip at a temperature of 800° C. or higher; annealing the hot-rolled strip at a temperature within a range of 900° C. to 1200° C.; cooling the annealed strip; warm-rolling the quenched strip at a temperature within a range of 300° C. to 700° C.; and finally annealing the warm-rolled strip at a temperature within a range of 800° C. to 1200° C.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: November 20, 2018
    Assignee: POSCO
    Inventors: Byung-Deug Hong, Jin-Mo Koo, Jae-Kon Lee, Sung-Jin Park, Sang-Hoon Kim
  • Alpha-helix analog having triazine-piperazine backbone and method for preparing same
    Patent number: 10131650
    Abstract: The alpha-helix mimetic containing a triazine-piperazine scaffold is provided. The alpha-helix mimetic compound can mimic efficiently the alpha-helix structure of protein secondary structure and act as an inhibitor for the protein interaction being specific to various diseases mediated by alpha-helix. Therefore, the compound can be used as a biological probe and have a high potential of drug treating diseases.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: November 20, 2018
    Assignees: POSCO, POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Hyun-Suk Lim, Misook Oh, Quyen Q. Hoang, Wei Wang
  • GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME
    Publication number: 20180327879
    Abstract: The present invention relates to a grain-oriented electrical steel sheet and a method for manufacturing the same. The grain-oriented electrical steel sheet contains 2.0 wt % or more to 5.0 wt % or less of Si, 0.005 wt % or more to 0.04 wt % or less of acid-soluble Al, 0.01 wt % or more to 0.2 wt % or less of Mn, 0.01 wt % or less (excluding 0 wt %) of N, 0.01 wt % or less (excluding 0 wt %) of S, 0.01 wt % or more to 0.05 wt % or less of Sb, 0.02 wt % or more to 0.08 wt % or less of C, 0.0005 wt % or more to 0.045 wt % or less of P, 0.03 wt % or more to less than 0.08 wt % of Sn, and 0.01 wt % or more to 0.2 wt % or less of Cr, and contains balance Fe and other inevitable impurities.
    Type: Application
    Filed: November 9, 2016
    Publication date: November 15, 2018
    Applicant: POSCO
    Inventors: Dae Hyun SONG, June Soo PARK
  • Apparatus and method for predicting slab quality
    Patent number: 10126285
    Abstract: Provided are an apparatus and method for predicting slab quality including a plurality of meniscus height detecting units prepared in a plurality of region on a top side of a mold receiving molten steel, and detecting a meniscus height of the molten steel, a meniscus flow detecting unit creating a meniscus flow pattern using meniscus heights at the plurality of regions, which are detected by the plurality of meniscus height detecting units, a data storage unit storing the meniscus flow pattern and quality data of a slab produced accordingly and a slab quality predicting unit extracting the meniscus flow pattern detected by the meniscus flow detecting unit and consequent slab quality from the data storage unit to predict slab quality.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: November 13, 2018
    Assignee: POSCO
    Inventors: Sang Woo Han, Yong Jin Kim, Joong Kil Park, Sung Kwang Kim
  • Magnesium-aluminum coated steel sheet
    Patent number: 10106866
    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: Grant
    Filed: December 17, 2014
    Date of Patent: October 23, 2018
    Assignees: POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Jae In Jeong, Ji Hoon Yang, Tae Yeob Kim, Yong Hwa Jung
  • Grain oriented electrical steel sheet having excellent core loss, and method for manufacturing same
    Patent number: 10109405
    Abstract: The present invention relates to a grain oriented electrical steel sheet having excellent core loss and to a method for manufacturing same. The electrical steel sheet according to one aspect of the present invention may have a composition comprising, by weight %, Si: 1.0 to 4.0%, Al: 0.1 to 4.0%, and a rare earth element: 0.0001 to 0.5% by the total content of the whole rare earth element.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: October 23, 2018
    Assignee: POSCO
    Inventors: Byung-Deug Hong, Dong-Kyun Kim
  • REACTION-TYPE STEAM TURBINE
    Publication number: 20180291741
    Abstract: Disclosed is a reaction-type steam turbine, including: a housing provided at a first side thereof with a steam inlet tube and at a second side thereof with a steam outlet tube, the housing having a space formed therein; and a turbine shaft provided to pass through the space of the housing, with a plurality of disk blades fitted over the turbine shaft, wherein a guide blade assembly is coupled to the turbine shaft at a position between a duct of the steam inlet tube and the disk blades, the guide blade assembly guiding steam introduced through the steam inlet tube into the space of the housing toward the disk blades.
    Type: Application
    Filed: June 14, 2018
    Publication date: October 11, 2018
    Applicant: POSCO ENERGY CO., LTD.
    Inventors: Jeajun Lee, Sanghoon Lee, Sung Keun Oh, Sangmyeong Lee, Juchang Lim
  • Non-oriented electrical steel sheet and method of manufacturing the same
    Patent number: 10096414
    Abstract: Disclosed are a non-oriented electrical steel sheet and a method of manufacturing the same. The non-oriented electrical steel sheet of the present invention includes 0.005 wt % or less of C, 1.0-4.0 wt % of Si, 0.1-0.8 wt % of Al, 0.01-0.1 wt % of Mn, 0.02-0.3 wt % of P, 0.005 wt % or less of N, 0.001-0.005 wt % of S, 0.005 wt % or less of Ti, 0.01-0.2 wt % of at least one of Sn and Sb, and the remainder including Fe and other impurities unavoidably added thereto, wherein Mn, Al, P, and S may respectively fulfill the empirical formula 0.8?{[Mn]/(100*[S])+[Al]}[P]?40, wherein [Mn], [Al], [P], and [S] respectively refer to weight percentages of Mn, Al, P, and S.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: October 9, 2018
    Assignee: POSCO
    Inventors: Junesoo Park, Byung-Keun Bae, Yong-Soo Kim, Su-Yong Sin
  • HIGH-MANGANESE STEEL BRAKE DISK
    Publication number: 20180283480
    Abstract: In accordance with one aspect of the present invention, there is provided a high-manganese steel brake disk comprising: a first disk member that includes a first disk main body, a plurality of first concave-convex portions arranged on the first disk main body so as to be radially spaced apart from each other, and a first insertion portion formed between the first concave-convex portions adjacent to each other; and a second disk member that includes a second disk main body, a plurality of second concave-convex portions arranged on the second disk main body so as to be radially spaced apart from each other, and a second insertion portion formed between the second concave-convex portions adjacent to each other.
    Type: Application
    Filed: December 6, 2016
    Publication date: October 4, 2018
    Applicants: POSCO, Research Institute of Industrial Science & Technoogy
    Inventor: Kwang-Soo PARK
  • Method for manufacturing high manganese hot-dip galvanized steel sheet with excellent coatability and ultra-high strength, and high manganese hot-dip galvanized steel sheet manufactured by said method
    Patent number: 10087511
    Abstract: There are provided a method for manufacturing a high manganese hot-dip galvanized steel sheet having superior coatability and ultra-high strength, and a high manganese hot-dip galvanized steel sheet manufactured by the method. The method includes: cold rolling a hot-rolled steel sheet to form a cold-rolled steel sheet, the hot-rolled steel sheet including, by wt %, C: 0.3% to 1%, Mn: 8% to 25%, Si: 0.1% to 3%, Al: 0.01% to 8%, Cr: 0.1% to 2%, Ti: 0.01% to 0.2%, B: 0.0005% to 0.01%, Ni: 0.01% to 2%, Sn: 0.06% to 0.2%, and a balance of Fe and inevitable impurities; heating the cold-rolled steel sheet; cooling the heated steel sheet to, or maintaining the heated steel sheet; and performing a hot-dip galvanizing process on the cooled or temperature-maintained steel sheet by dipping the cooled or temperature-maintained steel sheet into a hot-dip galvanizing bath.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 2, 2018
    Assignee: POSCO
    Inventors: Sun-Ho Jeon, Kwang-Geun Chin, Won-Tae Cho
  • Apparatus and method of detecting defect of steel plate
    Patent number: 10088453
    Abstract: An aspect of the present disclosure may provide a defect detection apparatus and method for a steel plate, in which a defect in a steel plate may be detected, and particularly, only an inner defect in the steel plate may be detected, even with a relatively low amplification rate.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: October 2, 2018
    Assignee: POSCO
    Inventors: Ju-Seung Lee, Chang-Hyun Park, Geon Shin, Sang-Woo Choi, Shin-Hwan Kang, Ho-Moon Bae, Ki-Jang Oh
  • Shape-correcting and rolling method and shape-correcting device for high-strength steel
    Patent number: 10086418
    Abstract: There are provided a shape-correcting and rolling method and a shape-correcting device for effectively correcting the shape of high-strength steel. The shape-correcting and rolling method includes: transferring a hot-rolled coil to a pay-off reel after cooling the hot-rolled coil or directly through a hot rolling to skin pass mill direct transfer process; unwinding the coil from the pay-off reel; correcting a shape of a strip unwound from the coil by using a heat pipe roller; and rewinding the strip as a coil.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: October 2, 2018
    Assignee: POSCO
    Inventors: Gil-Ho Song, Jae-Woong Byun, Nam-Il Jo, Sang-Kug Je, Jae-Wook Bae
  • Apparatus and method for ultrasonic detection to detect flaws of steel plate
    Patent number: 10082487
    Abstract: An apparatus and a method for ultrasonic detection are provided. The apparatus includes an injection nozzle which is installed below a steel plate being transported and forms a medium column by jet a medium toward the steel plate, an ultrasonic probe which is installed in the injection nozzle and transmits and receives ultrasonic waves for detecting flaws in the steel plate through the medium column, and a medium circulation unit which reclaims the medium which falls from the medium column and circulates the reclaimed medium to the injection nozzle.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: September 25, 2018
    Assignee: POSCO
    Inventors: Choong Soo Lim, Myung Sik Chun, Hyeong Jun Huh, Boong Ho Son
  • Metal fiber manufacturing system
    Patent number: 10076782
    Abstract: The present invention relates to a metal fiber manufacturing system. The system casts molten metal as a metal fiber; collects the metal fiber in real time; transfers the metal fiber; separates normal products from defective products; and packages a predetermined amount of the normal product metal fiber. The system processes the cast metal fiber continuously or in batches, and manufactures the same, thereby having effects of improving the efficiency of the production process and obtaining significant economic benefits.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: September 18, 2018
    Assignee: POSCO
    Inventors: Un-Kwan Cho, Goo-Hwa Kim, Chul-Sung Jang, Byung-Il Kim
  • Molten iron refining method and device thereof
    Patent number: 10077482
    Abstract: Provided are a molten metal refining device and method. The molten metal refining method includes: preparing molten metal; dipping an impeller into the molten metal; supplying a liquid dephosphorization agent on top of the molten metal; and stirring the molten metal by rotating the impeller, wherein a solid dephosphorization agent in a powder state is supplied through the lower portion of the impeller in the stirring of the molten metal, thereby improving the stirring efficiency of the molten metal and efficiently controlling the phosphorus concentration in the molten metal.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: September 18, 2018
    Assignee: POSCO
    Inventors: Jung Ho Park, Soo Chang Kang, Jin Kyu Chun, Yun Yeol Seo
  • VERTICAL SEMI-CONTINUOUS CASTING EQUIPMENT AND VERTICAL SEMI-CONTINUOUS CASTING METHOD
    Publication number: 20180250736
    Abstract: Provided is vertical semi-continuous casting equipment including a guide device disposed under the mold to support the slab drawn from the plate, the guide device being configured to guide the descending of the slab. The guide device includes first and second guide parts including a plurality of guide rolls respectively disposed on both sides of a moving path of the plate under the mold to support the slab moving by the plate and guide the movement of the slab and a braking unit connected to each of the guide rolls to apply braking force to the guide roll that rotates by the movement of the slab. In accordance with an exemplary embodiment, the slab having the length longer than that of the slab in accordance with the related art may stably descend, the shaking of the slab may be prevented, and the casting speed may be stabilized.
    Type: Application
    Filed: October 23, 2015
    Publication date: September 6, 2018
    Applicant: POSCO
    Inventors: Kyung Shik OH, Young Hoon KANG, Joo Dong LEE, Ki Hwan JOUNG, Un Kwan CHO
  • Super high-strength flux cored arc welded joint having excellent impact toughness, and welding wire for manufacturing same
    Patent number: 10065272
    Abstract: An ultra high-strength flux-cored arc welded joint having excellent impact toughness comprises: 0.01 wt % to 0.06 wt % of carbon (C), 0.1 wt % to 0.5 wt % of silicon (Si), 1.5 wt % to 3.0 wt % of manganese (Mn), 2.5 wt % to 3.5 wt % of nickel (Ni), 0.5 wt % to 1.0 wt % of molybdenum (Mo), 0.4 wt % to 1.0 wt % of copper (Cu), 0.4 wt % to 1.0 wt % of chromium (Cr), 0.01 wt % to 0.1 wt % of titanium (Ti), 0.003 wt % to 0.007 wt % of boron (B), 0.001 wt % to 0.006 wt % of nitrogen (N), 0.02 wt % (excluding 0) or less of phosphorus (P), 0.01 wt % (excluding 0) or less of sulfur (S), 0.03 wt % to 0.07 wt % of oxygen (O), and remaining iron (Fe) as well as unavoidable impurities.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: September 4, 2018
    Assignee: POSCO
    Inventors: Hong-Chul Jeong, Jin-Woo Lee, Dong-Ryeol Lee, Il-Wook Han, Hong-Kil Lee
  • Solid oxide fuel cell comprising reaction preventing layer and method for manufacturing same
    Patent number: 10062908
    Abstract: The present invention relates to a solid oxide fuel cell which can improve the overall performance of the cell and obtain durability and reliability, and the invention provides a solid oxide fuel cell comprising a reaction preventing layer and a method for manufacturing the same, wherein an anode, an electrolyte, and a cathode are comprised, and a material which is formed between the electrolyte and the cathode comprises 35-90 mol % of gadolinia-doped ceria (GDC) and 10-65 mol % of metal oxide.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: August 28, 2018
    Assignee: POSCO
    Inventors: Byeong-Geun Seong, Hong-Youl Bae
  • Building material
    Patent number: 10053870
    Abstract: Provided is a building material that is disposed between an inter-floor separation layer configured to separate floors of a building having a plurality of floors from each other and a bottom layer disposed above the inter-floor separation layer. The building material includes a support member disposed between the inter-floor separation layer and the bottom layer, having a top surface of which at least a portion contacts the bottom layer, and including a protruding portion protruding downward, extending in at least one direction, and having an inner space and a plurality of damping members disposed between the inter-floor separation layer and the support member and each of which has a lower plate contacting a portion of the inter-floor separation layer and an upper plate contacting a portion of the support member to allow the inter-floor separation layer to be spaced apart from the support member.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: August 21, 2018
    Assignee: POSCO
    Inventors: Young Dong Yu, Tae Yang Yoon, Pil Goo Lee