Patents Assigned to Posco
  • PLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND BENDABILITY AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240360541
    Abstract: The present invention provides a Zn—Mg—Al plated steel sheet having excellent in corrosion resistance and bendability, and a method for manufacturing same. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance, bendability, and plating adhesion, and a method for manufacturing the same.
    Type: Application
    Filed: September 27, 2022
    Publication date: October 31, 2024
    Applicant: POSCO CO., LTD
    Inventors: Tae-Chul Kim, Sung-Joo Kim, Myung-Soo Kim, Bong-Hwan Yoo, Yong-Kyun Cho, Il-Ryoung Sohn
  • PLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND WHITENESS AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240360540
    Abstract: The present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance and whiteness, and a method for manufacturing the same. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance, whiteness and bendability, and a method for manufacturing the same.
    Type: Application
    Filed: September 28, 2022
    Publication date: October 31, 2024
    Applicant: POSCO CO., LTD
    Inventors: Tae-Chul Kim, Sung-Joo Kim, Myung-Soo Kim, Bong-Hwan Yoo, Yong-Kyun Cho, Il-Ryoung Sohn
  • STEEL HAVING EXCELLENT HYDROGEN-INDUCED CRACKING RESISTANCE AND LOW-TEMPERATURE IMPACT TOUGHNESS, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240360533
    Abstract: The present invention relates to steel suitable for a pressure vessel that can be used as petrochemical manufacturing equipment, a storage tank, and the like, and, more specifically, to steel having excellent hydrogen-induced cracking (HIC) resistance and low-temperature impact toughness and a method for manufacturing same.
    Type: Application
    Filed: November 1, 2022
    Publication date: October 31, 2024
    Applicant: POSCO Co., Ltd
    Inventors: Tae-Il SO, Sang-Deok KANG
  • LITHIUM METAL ANODE, FABRICATION METHOD THEREOF, AND LITHIUM SECONDARY BATTERY COMPRISING SAME ANODE
    Publication number: 20240363832
    Abstract: One embodiment of the present invention relates to a lithium metal anode. Wherein the lithium metal anode comprises a current collector and a lithium metal thin film layer disposed on at least one surface of the current collector and having a thickness in a range of 0.1 to 200 ?m and a coating layer disposed on a surface of the lithium metal thin film layer, wherein, the coating layer comprising a Li—N—C—H—O based ionic compound.
    Type: Application
    Filed: May 13, 2024
    Publication date: October 31, 2024
    Applicants: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Jin Hong Kim, Hong-Youl Bae, Mun Kyu Cho, Nam Soon Choi, Sang-Lag Lee, Weon-Soo Bae, Yong Won Lee, Ji-Woong Moon
  • SHAPE CHECKING DEVICE FOR BENDING MATERIAL AND CONTINUOUS FORMING MACHINE
    Publication number: 20240351083
    Abstract: The present invention provides a shape checking device for a bending material including: a material fixing unit including a support member in which a first surface of a material including a first surface and a second surface, bent from the first surface is seated, and a pressing member configured to press the first surface of the material; and a distance measuring unit, and measuring a distance to the second surface, wherein the distance measuring unit includes a first distance measuring device for measuring a distance to the second surface, and a second distance measuring device for measuring a distance to a second surface, which is the same as the second surface on which a distance thereof is measured by the first distance measuring device, in a position, spaced apart from the first distance measuring device in a first direction, different from a bending forming direction of a material.
    Type: Application
    Filed: April 18, 2023
    Publication date: October 24, 2024
    Applicant: POSCO Co., Ltd.
    Inventor: Jae-Wook Lee
  • STEEL MATERIAL HAVING HIGH STRENGTH AND EXCELLENT IMPACT TOUGHNESS, AND MANUFACTURING METHOD THEREFOR
    Publication number: 20240352563
    Abstract: The present invention relates to: a steel material having high strength and excellent impact toughness, the steel material being usable for a land wind power generator and the like; and a method for manufacturing same.
    Type: Application
    Filed: November 1, 2022
    Publication date: October 24, 2024
    Applicant: POSCO CO., LTD
    Inventors: Tae-Il SO, Sang-Deok KANG
  • CROSS MEMBER FOR BATTERY CASE AND BATTERY CASE
    Publication number: 20240356136
    Abstract: The present invention provides a cross member for a battery case. The cross member comprises: a first frame part; a second frame part; and a connection frame part arranged between the first frame part and the second frame part to connect the first frame part with the second frame part, wherein the connection frame part is made of a material different from those of the frame part and the second frame part.
    Type: Application
    Filed: November 3, 2022
    Publication date: October 24, 2024
    Applicant: POSCO CO., LTD
    Inventors: Chang-Gyun Jung, Jae-Heon Park, Myung-Hwan Cha, Sang-Kwon Wee
  • Ultrahigh-strength steel sheet having excellent yield ratio, and manufacturing method therefor
    Patent number: 12123066
    Abstract: One aspect of the present invention relates to an ultrahigh-strength steel sheet having an excellent yield ratio, comprising, by wt %, 0.3-0.5% of C, 2.0% (excluding 0%) of Si, 3.0-6.5% of Mn, 0.02% or less of P, 0.01% or less of S, 0.01-3.0% of Al, 0.02% or less (excluding 0%) of N, and the balance of Fe and other inevitable impurities, and a microstructure comprises 5-30% of remaining austenite by area fraction and comprises 5% or less of secondary martensite.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: October 22, 2024
    Assignees: POSCO CO. LTD, POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Sea-Woong Lee, Bruno C. De Cooman, Kyoo-Young Lee, Eun-Jung Seo, Seon-Jong Lee, Joo-Hyun Ryu, Won-Hwi Lee
  • Ferritic stainless steel having improved pipe-expanding workability and method for manufacturing same
    Patent number: 12123067
    Abstract: A ferritic stainless steel with improved expandability includes, in percent (%) by weight of the entire composition, Cr: 10 to 25%, N: 0.015% or less (excluding 0), Al: 0.005 t 0.04%, Nb: 0.1 to 0.6%, Ti: 0.1 to 0.5%, the remainder of iron (Fe) and other inevitable impurities, and satisfies the following equation (1): Z=X*Y?17??equation(1).
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: October 22, 2024
    Assignee: POSCO CO., LTD
    Inventors: Il Chan Jung, Young Min Seo, Deok Chan Ahn
  • Grain-oriented electrical steel sheet and method for manufacturing same
    Patent number: 12123065
    Abstract: A grain-oriented electrical steel sheet according to an embodiment of the present disclosure includes: a forsterite layer formed on the surface of an electrical steel sheet; a groove which is formed on the forsterite layer in a direction perpendicular to a rolling direction; and a forsterite calcination layer which is formed in the direction of both ends of the electrical steel sheet on the basis of an upper end of the groove and has a width of 1.1 to 1.3 times the width of the groove.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: October 22, 2024
    Assignee: POSCO CO., LTD
    Inventors: Oh Yeoul Kwon, Se Min Park, Jong-Tae Park, Jae Kyoum Kim, Seung Gon Lee, Won Gul Lee
  • Aluminum-based plated steel plate for hot press having excellent resistance against hydrogen delayed fracture and spot weldability, and method for manufacturing same
    Patent number: 12123094
    Abstract: The present invention provides an aluminum-based plated steel plate used in hot-press forming, the steel plate comprising: a base steel plate; and a plating layer formed on the base steel plate, wherein the plating layer comprises: an alloying layer formed on the surface of the base steel plate and including one or more of Fe 3Al, FeAl(Si), Fe 2Al 5, and FeAl 3; and an aluminum layer formed on the alloying layer and having a thickness less than 10% of the thickness of the plating layer, and the plating layer has a thickness of 5-20 ?m and an oxygen content of 10 weight % or less, as measured by GDS, at a depth of 0.1 ?m from the surface of the plating layer.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: October 22, 2024
    Assignee: POSCO CO., LTD
    Inventors: Jin-Keun Oh, Seong-Woo Kim, Yeol-Rae Cho, Sang-Heon Kim
  • STEEL AND STEEL WIRE, WHICH ARE FOR SPRING, AND MANUFACTURING METHODS THEREFOR
    Publication number: 20240344185
    Abstract: Disclosed in the present specification are steel and a steel wire, which are for a spring, and manufacturing methods therefor, the steel and the steel wire having excellent resistance to permanent deformation by having increased in-material dislocation density or reduced average grain diameter. The steel wire for a spring, having excellent resistance to permanent deformation, according to one embodiment of the present invention, comprises, by wt %, 0.4-0.7% of C, 1.2-2.3% of Si, 0.2-0.8% of Mn, 0.2-0.8% of Cr, and the balance of Fe (iron) and other inevitable impurities, wherein the dislocation density thereof can be 1.16×1015/m2 or more, and the average grain diameter thereof can be 8.4 ?m or less.
    Type: Application
    Filed: July 13, 2022
    Publication date: October 17, 2024
    Applicant: POSCO CO., LTD
    Inventors: Kwanho KIM, Seokhawan CHOI, Myungsoo CHOI, Youngsoo CHUN
  • HOT-ROLLED STEEL PLATE AND STEEL TUBE HAVING EXCELLENT ABRASION RESISTANCE, AND MANUFACTURING METHOD THEREOF
    Publication number: 20240344187
    Abstract: The present invention pertains to: a hot-rolled steel plate; a steel tube; and methods for manufacturing the steel plate and steel tube. More specifically, the present invention pertains to: a high manganese hot-rolled steel plate having excellent abrasion resistance; a steel tube manufactured using the hot-rolled steel plate; and methods for manufacturing the steel plate and steel tube.
    Type: Application
    Filed: November 17, 2022
    Publication date: October 17, 2024
    Applicant: POSCO Co., Ltd
    Inventor: Hyoung-Jin PARK
  • ADVANCED HIGH STRENGTH ZINC PLATED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND ELECTRICAL RESISTANCE SPOT WELDABILITY AND MANUFACTURING METHOD THEREOF
    Publication number: 20240344164
    Abstract: The present disclosure relates to a high-strength hot-dip galvanized steel sheet having excellent surface quality and electrical resistance spot weldability, and a method for manufacturing the same. A galvanized steel sheet according to an aspect of the present disclosure is a galvanized steel sheet including a base steel sheet and a zinc-based plating layer formed on a surface of the base steel sheet, wherein a ratio (a/b) of a hardness of a surface layer portion (a) to a hardness of an internal portion (b) of the base steel sheet may be less than 0.95.
    Type: Application
    Filed: April 25, 2024
    Publication date: October 17, 2024
    Applicant: POSCO CO., LTD
    Inventors: Ki-Cheol Kang, Chung-Hwan Lee, Yong-Joo Kim, Kang-Min Lee, Kyoo-Young Lee
  • POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM ION BATTERY, PREPARING METHOD OF THE SAME, AND RECHARGEABLE LITHIUM ION BATTERY COMPRISING THE SAME
    Publication number: 20240347690
    Abstract: The present disclosure relates to a positive electrode active material for rechargeable lithium ion batteries and a method of preparing the positive electrode active material, in which a compound including sulfur is used as an additive in a wet treatment process to remove residual lithium impurities (LiOH, Li2CO3) present on a surface of the positive electrode active material, such that the residual lithium impurities are effectively removed without loss of capacity while a Li-S compound coating layer is formed on the surface thereof, thereby reducing resistance and leakage current.
    Type: Application
    Filed: April 19, 2024
    Publication date: October 17, 2024
    Applicant: POSCO CHEMICAL CO., LTD.
    Inventors: Sun Tai KIM, Hye Won PARK, Eun Hui PARK
  • PLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE, GALLING RESISTANCE, WORKABILITY AND SURFACE PROPERTY AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240344191
    Abstract: Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al plating layer provided on at least one surface of the base steel sheet; and an Fe—Al inhibition layer provided between the base steel sheet and the Zn—Mg—Al plating layer. The plating layer comprises, by weight %, 4 to 10% of Mg and 5.1-25% of Al and the remainder being Zn and unavoidable impurities with respect to components not including iron (Fe) diffused from the base steel sheet. The plating layer comprises a 24-50% MgZn2 phase in phase fraction. In the MgZn2 phase, an Al single phase is present in the ratio of 1-30% relative to the cross-sectional area of the total MgZn2 phase.
    Type: Application
    Filed: June 6, 2024
    Publication date: October 17, 2024
    Applicants: POSCO CO., LTD, STEEL & CONVERGENCE TECHNOLOGY RESEARCH ASSOCIATION, POSCO COATED & COLOR STEEL CO., LTD.
    Inventors: Sung-Joo Kim, Kyung-Kwan Park, Moon-Hi Hong, Heung-Yun Kim, Tae-Yeul Park, Myung-Soo Kim, Il-Ryoung Sohn, Tae-Chul Kim, Dae-Young Kang
  • Furnace for producing secondary battery cathode material and method for firing secondary battery cathode material
    Patent number: 12117242
    Abstract: A furnace for producing a secondary battery cathode material according to an exemplary embodiment of the present invention includes; a chamber of which the internal space is heated by a heater, a conveyer installed in the chamber and conveying a sagger containing raw material power of a cathode material of a secondary battery in one direction; and a gas supply nozzle and an exhaust port installed in the chamber. The chamber is divided into a front chamber, an intermediate chamber, and a rear chamber. The intermediate chamber has an inlet shutter and an outlet shutter for sealing the internal space thereof, and an exhaust port of the intermediate chamber is connected to an exhaust device for discharging gas.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 15, 2024
    Assignees: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO FUTURE M CO., LTD.
    Inventors: Keeyoung Jung, Choongmo Yang, Yoon Cheol Park, Soon Cheol Hwang, Yeong Woo Kim, Young Min Park
  • Grain-oriented electrical steel sheet and magnetic domain refinement method thereof
    Patent number: 12116645
    Abstract: A grain-orientation electrical steel sheet according to an exemplary embodiment of the present invention includes a linear groove formed in a direction intersecting with the rolling direction, the groove includes the gradient section and the uniform section on a cross section including the transverse direction of the groove and the rolling surface normal direction of the steel sheet, and a length of the gradient section (GS) and the length of the uniform section (US) satisfy Equation 1 below. 0.1?[GSL]/[USL]?0.5??[Equation 1] In Equation 1, [GSL] represents the length (mm) of the gradient section and [USL] represents the length (mm) of the uniform section.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: October 15, 2024
    Assignee: POSCO CO., LTD
    Inventors: Se-Min Park, Seong-Cheol Hong, Hyun-Chul Park, Jung-Moon Kang, Chang-Ho Kim, Won-Gul Lee, Ki-Young Min
  • HIGH-STRENGTH STEEL HAVING HIGH YIELD RATIO AND EXCELLENT DURABILITY, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240337003
    Abstract: Thick high-strength steel having a high yield ratio and excellent durability, and a method for manufacturing same are provided. The thick high-strength steel having a high yield ratio and excellent durability of the present invention comprises, in percentage by weight, C: 0.05 to 0.15%, Si: 0.01 to 1.0%, Mn: 1.0 to 2.3%, Al: 0.01 to 0.1%, Cr: 0.005 to 1.0%, P: 0.001 to 0.05%, S: 0.001 to 0.01%, N: 0.001 to 0.01%, Nb: 0.005 to 0.07%, Ti 0.005 to 0.11%, Fe and unavoidable impurities.
    Type: Application
    Filed: June 18, 2024
    Publication date: October 10, 2024
    Applicant: POSCO
    Inventors: Sung-Il Kim, Hyun-Taek Na
  • STEEL PLATE HAVING EXCELLENT HEAT AFFECTED ZONE TOUGHNESS AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240336987
    Abstract: The present invention relates to a steel plate for use in ships and the like, which has excellent toughness in a heat-affected zone (HAZ), even when a steel material having high strength and high ductility is welded with a certain amount of heat input or more, and to a method for manufacturing same.
    Type: Application
    Filed: November 25, 2022
    Publication date: October 10, 2024
    Applicant: POSCO Co., Ltd
    Inventor: Hak-Cheol LEE