Patents Assigned to Posco
  • METHODS FOR MANUFACTURING WIRE ROD FOR COLD FORGING AND SCREW PART, HAVING EXCELLENT DRILLING CHARACTERISTICS
    Publication number: 20250043376
    Abstract: The present disclosure relates to methods for manufacturing a wire rod for cold forging and a screw part, which may manufacture with only quenching heat treatment a part with excellent drilling characteristics, and which may specifically manufacture a part to be used for mechanical coupling of automotive parts manufactured with different materials.
    Type: Application
    Filed: December 13, 2022
    Publication date: February 6, 2025
    Applicant: POSCO CO., LTD.
    Inventors: Byungin JUNG, Youngsoo CHUN, Yongsik PARK
  • CALCIUM-CONTAINING GRAPHITE STEEL WIRE ROD, GRAPHITE STEEL, AND MANUFACTURING AND CUTTING METHOD THEREFOR
    Publication number: 20250043400
    Abstract: The present disclosure relates to a calcium-containing graphite steel wire rod, a steel wire, a graphite steel, and a manufacturing and cutting method thereof, and more particularly, to a cutting method for manufacturing industrial parts, a graphite steel wire rod, a graphite steel, and a manufacturing method therefor.
    Type: Application
    Filed: December 13, 2022
    Publication date: February 6, 2025
    Applicant: POSCO CO., LTD
    Inventors: Sangwoo CHOI, Namsuk LIM
  • COLD ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING
    Publication number: 20250043404
    Abstract: A cold rolled steel sheet according to an exemplary embodiment of the present invention comprises, by wt %: C: 0.01 to 0.10%; Mn: 0.1 to 0.4%; Al: 0.01 to 0.10%; P: 0.003 to 0.020%; N: 0.001 to 0.006%; S: 0.015% or less; Cr: 0.1 to 0.4%; B: 0.0005 to 0.0035%; Ni: 0.04 to 0.10%; and the balance Fe and other unavoidable impurities, and comprises a (Cr—B)(C—N)-based composite precipitate having a size of 0.01 to 0.1 ?m, wherein a [I 222+I 554]/I 200 texture ratio is 5.0 to 10.0, an earing rate is less than 3.0%, and an alloying rate of an alloy layer may be 5 to 15%.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 6, 2025
    Applicant: POSCO CO., LTD
    Inventor: Jaiik Kim
  • COLD-ROLLED STEEL SHEET AND GALVANIZED STEEL SHEET WITH EXCELLENT PRESS FORMABILITY AND METHOD OF MANUFACTURING THEREOF
    Publication number: 20250043379
    Abstract: A cold-rolled steel sheet, according to one embodiment of the present invention, may comprise in percentage by weight: carbon (C): 0.010-0.025%; manganese (Mn): 0.10-0.25%; sulfur(S): 0.002-0.011%; boron (B): 0.0006-0.0026%; nitrogen (N): 0.0010-0.0034%; aluminum (Al): 0.006-0.028%; and the balance being Fe and unavoidable impurities, and may comprise precipitates of at least one of MnS and BN, wherein the average particle diameter of the precipitates may be 40-250 nm, the area fraction of the precipitates in the cold-rolled steel sheet may be 1-10%, and the yield strength may be 150-220 MPa.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 6, 2025
    Applicant: POSCO CO., LTD
    Inventor: Byoung Ho Lee
  • Non-directional electrical steel sheet and method for producing same
    Patent number: 12215400
    Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention includes, in wt %, Si at 0.2 to 4.3%, Mn at 0.05 to 2.5%, Al at 0.1 to 2.1%, Bi at 0.0001 to 0.003%, Ga at 0.0001 to 0.003%, and the balance of Fe and inevitable impurities.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: February 4, 2025
    Assignee: POSCO CO., LTD
    Inventors: Jaewan Hong, June Soo Park, Su-Yong Shin, Yong-Soo Kim
  • Apparatus for cooling metal material
    Patent number: 12215425
    Abstract: Provided is an apparatus for cooling a metal material, the apparatus comprising: a spray cooling unit for spraying a cooling medium onto the surface of a metal material; and a spray amount control unit which regulates the rate of passage of the cooling medium sprayed from the spray cooling unit onto the edge region of the metal material, and controls the spray amount of the cooling medium.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: February 4, 2025
    Assignee: POSCO CO., LTD
    Inventor: Jung-Kuk Kim
  • Non-oriented electrical steel sheet and method for manufacturing same
    Patent number: 12215403
    Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention includes, in wt %, Si: 1.5 to 4.0%, Al: 0.1 to 1.5%, Mn: 0.05 to 1.5%, Sn: 0.015 to 0.1%, P: 0.005 to 0.05%, Ga: 0.001 to 0.004%, and Bi: 0.0005 to 0.003%, and the balance of Fe and inevitable impurities. An area fraction of texture in a {118}//ND orientation is higher than that of texture in a {111}//ND orientation.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: February 4, 2025
    Assignee: POSCO
    Inventors: Hunju Lee, Jae-Hoon Kim, Seung-Gon Lee, Seung Il Kim
  • Gas detection device
    Patent number: 12217594
    Abstract: A gas detection device is disclosed.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: February 4, 2025
    Assignee: POSCO CO., LTD
    Inventors: Cheol-hee Choi, Kisoo Kim, Dukman Lee
  • POSITIVE ELECTRODE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME
    Publication number: 20250033994
    Abstract: The present exemplary embodiments relate to a positive electrode active material, its manufacturing method, and a lithium secondary battery including the same. The positive electrode active material according to an exemplary embodiment is a metal oxide particle including: a metal oxide particle comprising a central portion and a surface portion located on the surface of the central portion, wherein, the metal oxide particle includes nickel, cobalt, manganese, and doping elements and is composed of a single particle, and the metal oxide particle includes a crystal phase of layered structure belonging to the R-3m space group on the surface, and an average grain size is 1550 ? or more.
    Type: Application
    Filed: September 2, 2022
    Publication date: January 30, 2025
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO CHEMICAL CO., LTD
    Inventors: Kwon Young CHOI, Jung Hoon SONG, Sanghyuk LEE, Inchul PARK, Ohmin KWON, Byong Yong YU, Kijoo HONG, Sang Cheol NAM
  • COLD-ROLLED STEEL SHEET HAVING EXCELLENT STRENGTH AND ELONGATION AND METHOD FOR MANUFACTURING SAME
    Publication number: 20250034683
    Abstract: A cold-rolled steel sheet having improved strength and elongation, according to one embodiment of the present invention, comprises, in weight %: 0.04-0.08% of C; 0.05% or less (excluding 0%) of Si; 0.1-0.6% of Mn; 0.02-0.06% of Al; 0.015% or less (excluding 0%) of P; 0.015% or less (excluding 0%) of S; 0.006% or less (excluding 0%) of N; 0.02-0.04% of Nb; and the remainder of Fe and other inevitable impurities, wherein the cold-rolled steel sheet has a component reinforcement index defined by expression 1 of 470 or less, a crystal grain aspect ratio defined by expression 2 of 2.15 or less, and a composite reinforcement index defined by expression 3 of 500 to 600.
    Type: Application
    Filed: December 19, 2022
    Publication date: January 30, 2025
    Applicant: POSCO CO., LTD
    Inventors: Minho Jo, Young-Kwang Hong
  • METHOD FOR MANUFACTURING MOLDED PARTS
    Publication number: 20250033108
    Abstract: The present invention provides a method for manufacturing molded parts, the method being characterized by comprising: a first molding step for molding a base material to form a first molded part including a first upper flange and a pair of first web members extending in intersecting directions from the left and right ends of the first upper flange; and a second molding step for compressing the first molded part to form a second molded part including a second upper flange and a pair of second web members extending in intersecting directions from the left and right ends of the second upper flange, wherein, in a width direction cross section, the first upper flange is longer than the second upper flange and the first web members are longer than the second web members.
    Type: Application
    Filed: December 1, 2022
    Publication date: January 30, 2025
    Applicant: POSCO CO., LTD
    Inventor: Kyung-Seok Oh
  • ALUMINUM ALLOY-PLATED STEEL SHEET HAVING EXCELLENT WORKABILITY AND CORROSION RESISTANCE AND METHOD FOR MANUFACTURING SAME
    Publication number: 20250034692
    Abstract: An aluminum alloy-plated steel sheet having excellent workability and corrosion resistance and a method for manufacturing the same are disclosed. The aluminum alloy-plated steel sheet includes a base sheet, and an alloy-plated layer formed on the base sheet. Interfacial roughness between the alloy-plated layer and the base steel sheet is 25 ?m or less. Such an aluminum alloy-plated steel sheet prevents microcracks generated during hot forming and has excellent seizure resistance and corrosion resistance. A method for manufacturing such an aluminum alloy-plated steel is also disclosed.
    Type: Application
    Filed: October 17, 2024
    Publication date: January 30, 2025
    Applicant: POSCO Co., Ltd.
    Inventors: Suk-Kyu Lee, Hyeon-Seok Hwang, Myung-Soo Kim, Jong-Gi Oh, Kwang-Tai Min
  • GRAPHITE STEEL WIRE ROD AND GRAPHITE STEEL FOR TV PEM NUT PARTS, METHODS FOR MANUFACTURING AND CUTTING THEREFOR
    Publication number: 20250034672
    Abstract: The present disclosure relates to a graphite steel wire rod for TV PEM nut parts, a graphite steel, and a manufacturing and cutting method therefor, and more particularly, to a cutting method for manufacturing industrial parts, a graphite steel wire rod, a graphite steel wire rod, a graphite steel, and a manufacturing method therefor.
    Type: Application
    Filed: December 13, 2022
    Publication date: January 30, 2025
    Applicant: POSCO CO., LTD.
    Inventors: Sangwoo CHOI, Namsuk LIM, Sewon PARK
  • STAINLESS STEEL FOR FUEL CELL SEPARATOR AND MANUFACTURING METHOD THEREOF
    Publication number: 20250038221
    Abstract: Provided are a metal material, for a fuel cell separator, having: five or more fine protrusions of 10 to 100 nm on the metal material surface coming into contact with a GDL in a fuel cell; and a real surface length/protrusion-free apparent surface length ratio of 1.15 or more based on a cross-section observed by a transmission electron microscope. The metal material is characterized by having a contact resistance of 10 m?·cm2 or less by forming fine protrusions on the surface.
    Type: Application
    Filed: December 14, 2022
    Publication date: January 30, 2025
    Applicant: POSCO CO., LTD
    Inventors: Kwangmin Kim, Donghoon Kim, Bosung Seo, Jonghee Kim
  • AUSTENITIC STEEL HAVING EXCELLENT ULTRA-LOW TEMPERATURE TOUGHNESS IN WELD HEAT-AFFECTED ZONE, AND MANUFACTURING METHOD THEREFOR
    Publication number: 20250034671
    Abstract: According to one aspect of the present invention, an austenitic high-manganese steel having excellent ultra-low temperature toughness in a weld heat-affected cone, and a manufacturing method therefor can be provided.
    Type: Application
    Filed: December 20, 2022
    Publication date: January 30, 2025
    Applicant: POSCO CO., LTD
    Inventors: Soon-Gi LEE, Jong-Kyo CHOI, Sang-Deok KANG
  • Steel material having low yield ratio and excellent heat affected zone toughness and manufacturing method therefor
    Patent number: 12209294
    Abstract: The present invention relates to a steel material used as materials for building structures, ship structures, offshore structures, or the like and, more specifically, to a steel material having low yield ratio and excellent weld heat affected zone toughness and a manufacturing method therefor.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: January 28, 2025
    Assignee: POSCO CO., LTD
    Inventor: Jae-Yong Chae
  • BATTERY CASE
    Publication number: 20250030100
    Abstract: The present invention provides a battery case comprising: a side frame; longitudinal members which are arranged in the side frame and extend in the longitudinal direction; width-direction members which are arranged in the side frame and extend in the width-direction so as to be connected crosswise with the longitudinal members, and which each include a first lower width-direction unit and a second lower width-direction unit that are arranged overlapping in the height direction; and a cooling panel which is arranged above the first lower width-direction units and cools a battery module.
    Type: Application
    Filed: December 15, 2022
    Publication date: January 23, 2025
    Applicant: POSCO CO., LTD
    Inventors: Hong-Woo Lee, Hwi-Geon Kim
  • COLD ROLLED STEEL SHEET AND METHOD OF MANUFACTURING SAME
    Publication number: 20250027181
    Abstract: The present disclosure relates to a cold rolled steel sheet having excellent weldability, strength and formability and a method of manufacturing the same. An aspect of the present disclosure is to provide a cold-rolled steel sheet having excellent weldability, strength, and formability, and a method of manufacturing the same. As set forth above, according to an aspect of the present disclosure, a cold-rolled steel sheet having excellent weldability, strength, and formability and a method of manufacturing the same may be provided.
    Type: Application
    Filed: December 6, 2022
    Publication date: January 23, 2025
    Applicant: POSCO CO., LTD
    Inventor: Young-Roc Im
  • HOT ROLLED STEEL SHEET FOR GROUND REINFORCEMENT AND STEEL PIPE FOR GROUND REINFORCEMENT, AND MANUFACTURING METHODS THEREOF
    Publication number: 20250027182
    Abstract: The present invention relates to: a hot rolled steel sheet for ground reinforcement and a steel pipe for ground reinforcement, which have excellent strength and formability; and manufacturing methods thereof. An aspect of the present disclosure is to provide a hot-rolled steel sheet for ground reinforcement and a steel pipe for ground reinforcement, having excellent strength and formability, and manufacturing methods thereof.
    Type: Application
    Filed: December 2, 2022
    Publication date: January 23, 2025
    Applicant: POSCO CO., LTD
    Inventors: Yun-Ik KWON, Hak-Jun KIM, Kyong-Su PARK, Seok-Jong SEO
  • PRINTING EQUIPMENT FOR METAL MATERIAL HAVING EXCELLENT PRINT QUALITY, PRINTING METHOD AND PRINTED METAL MATERIAL OBTAINED THEREFROM
    Publication number: 20250028261
    Abstract: The present invention relates to technology for printing an image such as a letter, a picture, or the like on a surface of a metal material, including printing equipment capable of stably printing the image on the surface of the metal material at high speed, a printing method using the same, and a printed metal material obtained therefrom.
    Type: Application
    Filed: July 11, 2022
    Publication date: January 23, 2025
    Applicant: POSCO CO., LTD
    Inventor: Sun-Hong Park