Patents Assigned to Posco
  • Publication number: 20230378583
    Abstract: The present invention relates to a side frame for a battery case, which can achieve lightweight and cost reduction simultaneously while sufficiently protecting battery cells against the external shock, and the side frame for a battery case according to an embodiment comprises: a first frame unit formed to have an open end surface; and a second frame unit which is arranged in the first frame unit to close the open end surface of the first frame unit and is coupled to the first frame unit, wherein the first frame unit and the second frame unit may be formed of different materials from each other.
    Type: Application
    Filed: June 24, 2021
    Publication date: November 23, 2023
    Applicant: POSCO Co., Ltd
    Inventors: Chang-Gyun Jung, Sang-Kwon Wee, Kyu-Seung Jee
  • Patent number: 11820103
    Abstract: The present invention relates to a steel sheet for a hot press formed member having excellent coating adhesion, and a method for manufacturing the same. A steel sheet for hot press forming according to one aspect of the present invention is an aluminum alloy plated steel sheet, wherein an average Fe content in a plating layer may be 40 wt % or more, and a concentration gradient of a section having a Fe content of 45 wt % to 80 wt % in the plating layer may 7 wt %/?m or less of a concentration gradient at a section having an Fe content of 45% to 80% in the plating layer in a thickness direction from a surface of the plating layer according to a result of GDS analysis.
    Type: Grant
    Filed: November 2, 2021
    Date of Patent: November 21, 2023
    Assignee: POSCO CO., LTD
    Inventors: Seong-Woo Kim, Jin-Keun Oh, A-Ra Cho, Hyeon-Jeong Shin
  • Patent number: 11815127
    Abstract: Disclosed is a welded member for plated steel plate having excellent weld zone porosity resistance and fatigue properties and a method of manufacturing the same. The welded member for plated steel plate having excellent weld zone porosity resistance and fatigue properties according to an embodiment of the present invention comprises a weld metal portion formed by arc welding and overlapping a first member and a laminated second member so as to partially overlap the first member, wherein the toe angle (?) of the weld metal portion is 45° or less, and the first member and the second member are plated steel plates.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: November 14, 2023
    Assignee: POSCO CO., LTD
    Inventors: Gyu-Yeol Bae, Tae-Young Lee
  • Patent number: 11814556
    Abstract: A coacervate including a catechol-substituted anionic polymer; an adhesive including same; and a method for producing the coacervate are described. More specifically, a coacervate formed by mixing a catechol derivative of a mussel adhesive protein and a catechol-substituted anionic polymer; an adhesive including the coacervate; and a method for producing a coacervate are described. The method includes a step of obtaining a catechol-substituted anionic polymer through catechol substitution of an anionic polymer, and a step of mixing the catechol-substituted anionic polymer and a catechol derivative of a mussel adhesive protein.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: November 14, 2023
    Assignees: POSCO CO., LTD, POSTECH ACADEMY-INDUSTRY FOUNDATION, NATURE GLUETECH CO., LTD.
    Inventors: Hyung Joon Cha, Hyo Jeong Kim, Bong-Hyuk Choi
  • Publication number: 20230356334
    Abstract: A welding wire for obtaining a giga-grade weld, a welded structure manufactured using same, and a welding method thereof are provided. The welding wire of the present invention comprises: by mass % of the whole wire, 0.08 to 0.15% of C; 0.001% to 0.1% of Si; 1.6 to 1.9% of Mn; 0.015% or less of P; 0.015% or less of S; 4.0 to 5.2% of Cr; 0.4 to 0.65% of Mo, and the remainder being Fe and unavoidable impurities, wherein value X defined by the following relation 1 satisfies the range of 0.7 to 1.1%.
    Type: Application
    Filed: April 23, 2021
    Publication date: November 9, 2023
    Applicant: POSCO
    Inventors: Gyu-Yeol Bae, Hong-Chul Jeong
  • Publication number: 20230357878
    Abstract: The objective of the present invention is to provide a steel material having improved hydrogen embrittlement resistance and high impact toughness despite a low-cost alloy system compared to conventional steel, which can be advantageously applicable in the field using hydrogen which is gradually increasing, and a method for manufacturing same.
    Type: Application
    Filed: July 20, 2021
    Publication date: November 9, 2023
    Applicant: POSCO Co., Ltd
    Inventor: Hyun-Je Sung
  • Publication number: 20230357907
    Abstract: The present invention relates to a steel sheet used for a line pipe or the like, and particularly, to a steel sheet having excellent hydrogen induced cracking resistance, and longitudinal strength uniformity, and a method for manufacturing the same.
    Type: Application
    Filed: July 13, 2023
    Publication date: November 9, 2023
    Applicant: POSCO CO., LTD
    Inventors: Seong-Ung Koh, Hyo-Shin Kim, Yoen-Jung Park
  • Patent number: 11807922
    Abstract: An embodiment of the present invention provides: an adhesive coating composition capable of attaching (coupling) an electrical steel sheet without using an existing coupling method, such as welding, clamping, or interlocking; an electrical steel sheet laminate employing the same; and a manufacturing method therefor. The adhesive coating composition according to an embodiment of the present invention comprises: 40-95 wt % of a first component comprising an organic/inorganic composite in which inorganic nanoparticles are substituted in a water-soluble resin; 1-50 wt % of a second component comprising a composite metal phosphate; and 1-10 wt % of an additive.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: November 7, 2023
    Assignee: POSCO CO., LTD
    Inventors: Jung-Woo Kim, Bongwoo Ha, Taeyoung No, Won-Seog Bong
  • Publication number: 20230348732
    Abstract: The present disclosure is to provide a surface treatment composition that may impart excellent corrosion resistance, blackening resistance, and alkali resistance, and an intrinsic surface color property to a ternary hot-dip galvannealed steel sheet. The present disclosure provides a surface treatment composition containing: based on 100 wt% of a solid content of the composition, 70 to 90 wt% of a resin mixture including a high molecular weight polysilicon-modified polyurethane main resin, a low molecular weight polysilicon-modified polyurethane auxiliary resin, and an acrylic urethane auxiliary resin; 5 to 25 wt% of a melamine-based curing agent; 0.5 to 10 wt% of an inorganic additive; 0.5 to 10 wt% of a silane coupling agent; 0.1 to 2 wt% of an adhesion promoter; 0.1 to 2 wt% of a coloring pigment; and 0.1 to 1 wt% of a pigment stabilizer.
    Type: Application
    Filed: September 2, 2021
    Publication date: November 2, 2023
    Applicant: POSCO Co., Ltd
    Inventors: Soo-Hyoun Cho, Won-Ho Son
  • Publication number: 20230347623
    Abstract: Provided are a constrained-type vibration-damping metal sheet having foam pores and a method for manufacturing same. The constrained-type vibration-damping metal sheet of the present invention comprises: a lower metal sheet; a foam resin film bonded to the lower metal sheet; and an upper metal sheet bonded to the foam resin film, wherein the foam resin film has foam pores comprising, by wt % of itself, 85-95% of a thermoplastic polyethylene resin having a number average molecular weight of 8000-12000, 0.1-1% of stearic acid, 1-5% of a styrene-ethylene-butadiene-styrene (SEBS) resin, 0.5-5% of a foaming agent, 1-4% of a dicumyl peroxide crosslinking agent, and 0.5-2% of ZnO foaming aid.
    Type: Application
    Filed: September 13, 2021
    Publication date: November 2, 2023
    Applicant: POSCO Co., Ltd
    Inventors: Jin-Tae Kim, Yang-Ho Choi, Ha-Na Choi, Dae-Gyu Kang
  • Publication number: 20230348712
    Abstract: The present invention relates to, in the provision of a material that has excellent weather resistance and heat-radiation characteristics, and thus, is suitable for solar cells, a composite resin composition having excellent weather resistance and heat-radiation characteristics, a composite-resin-coated steel sheet obtained therefrom, and a method for manufacturing the same.
    Type: Application
    Filed: September 24, 2021
    Publication date: November 2, 2023
    Applicant: POSCO Co., Ltd
    Inventors: Du-Hwan Jo, Young-Jun Park, Hee-Jea Eun
  • Patent number: 11801664
    Abstract: Provided is a steel sheet for a hot press formed member having excellent resistance to hydrogen delayed fracture, and a method for manufacturing the same. A steel sheet for a hot press formed member comprises: a base steel sheet; an aluminum alloy plating layer on a surface of the base steel sheet; and an oxide layer which is formed on a surface of the plating layer and has a thickness of 0.05 ?m or more.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: October 31, 2023
    Assignee: POSCO CO., LTD.
    Inventors: Seong-Woo Kim, Jin-Keun Oh, Yeol-Rae Cho
  • Patent number: 11801665
    Abstract: Provided is a hot-dip galvanized steel sheet to be used for home appliances, vehicles, and the like, and having excellent surface appearance and low-temperature bonding brittleness. The hot-dip galvanized steel sheet includes: a base steel sheet; and a hot-dip galvanized layer formed on the base steel sheet. A surface of the base steel sheet has a centerline average roughness (Ra) of 0.3 or more, a roughness skewness (Rsk) of ?1 or less, and a roughness kurtosis (Rku) of 6 or more.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: October 31, 2023
    Assignee: POSCO CO., LTD
    Inventor: Hyeon-Seok Hwang
  • Patent number: 11802319
    Abstract: A double oriented electrical steel sheet includes: 2.0 to 6.0% of Si, 0.0005 to 0.04% of Al, 0.0001 to 0.003% of S, 0.02 to 1.0% of Mn, equal to or less than 0.003% of N, excluding 0%, equal to or less than 0.01% of C, excluding 0%, equal to or less than 0.01% of Ti excluding 0%, 0.005 to 0.10% of P as wt %, and a remainder including Fe and inevitable impurities. Such a double oriented electrical steel sheet satisfies Formula 1: [Mn]/[S]?60,??[Formula 1] where, [Mn] and [S] are contents (wt %) of Mn and S, respectively.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: October 31, 2023
    Assignee: POSCO CO., LTD
    Inventors: Seil Lee, Sang-Woo Lee, Su-Yong Shin
  • Publication number: 20230339543
    Abstract: The present disclosure relates to a side sill for a vehicle, wherein the side sill is capable of absorbing an impact during lateral collision of the vehicle to maximally suppress the degree to which the side sill enters the interior, and protecting vehicle occupants and batteries. The side sill for a vehicle comprises: a side sill inner panel; a side sill outer panel coupled to the side sill inner panel; and a first cushioning member disposed between the side sill inner panel and the side sill outer panel and constituting a plurality of closed cross-sections arranged in the width direction of the side sill. The first cushioning member includes a main body formed by bending a single plate, and at least one partition member connecting both surfaces of the main body. A plurality of beads may be formed on the main body and the partition member.
    Type: Application
    Filed: October 8, 2021
    Publication date: October 26, 2023
    Applicant: POSCO Co., Ltd
    Inventors: Gyu-Min Lee, Gi-Suk Chung, Kyung-Hwan Chung
  • Patent number: 11794238
    Abstract: Provided is a mold flux used for casing a cast slab, the mold flux including, bases on a total wt % of thereof, 32-38 wt % of aluminum oxide (Al2O3), 8-12 wt % of strontium oxide (SrO), 8-12 wt % of potassium oxide (K2O), 8-12 wt % of fluorine (F), 5-8 wt % of boron oxide (B2O3), 3-5 wt % of lithium oxide (Li2O), and inevitable impurities. Thus, according to the mold flux, a change in components due to silicon oxide (SiO2) and calcium oxide (CaO) may be suppressed or prevented compared to those in the conventional art.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: October 24, 2023
    Assignee: POSCO CO., LTD
    Inventors: Jun Yong Park, Tae In Chung, Seong Yeon Kim
  • Publication number: 20230335848
    Abstract: The present invention relates to a battery case capable of minimizing the deformation of a battery by effectively coping with side collisions of an electric vehicle and the like, the battery case comprising: a case body for accommodating a battery cell; and a cover coupled to the case body, wherein the case body comprises: a bottom plate; side frames which are coupled to the bottom plate to surround the battery cell, and which include inner sidewalls and outer sidewalls; a mounting frame coupled to the outer sidewalls of the side frames; and at least one reinforcing material, which is arranged on the bottom plate and has longitudinal both-end portions inserted into the side frames, wherein the end portions of the reinforcing material may come in contact with the mounting frame by penetrating the inner sidewalls and the outer sidewalls of the side frames.
    Type: Application
    Filed: October 8, 2021
    Publication date: October 19, 2023
    Applicant: POSCO Co., Ltd
    Inventors: Dong-Yoon Seok, Hong-Woo Lee, Jae-Hyun Kim
  • Publication number: 20230332281
    Abstract: The present disclosure relates to a hot-rolled steel sheet utilized as material for heavy machinery, vehicle frames, and the like, and more specifically to a high-strength hot-rolled steel sheet having excellent bendability and low-temperature toughness and a method for manufacturing same.
    Type: Application
    Filed: June 23, 2023
    Publication date: October 19, 2023
    Applicant: POSCO CO., LTD
    Inventors: Sung-Il Kim, Hee-Sung Kang, Hyun-Seok Tak
  • Patent number: 11788166
    Abstract: An aspect of the present invention relates to a cold-rolled steel plate for hot forming, which is excellent in corrosion-resistance and spot-weldability, contains, by weight %, C: 0.1-0.4%, Si: 0.5-2.0%, Mn: 0.01-4.0%, Al: 0.001-0.4%, P: 0.001-0.05%, S: 0.0001-0.02%, Cr: 0.5% to less than 3.0%, N: 0.001-0.02%, and a balance of Fe and inevitable impurities, satisfying formula (1) below, and includes an Si amorphous oxidation layer continuously or discontinuously formed at a thickness of 1 nm-100 nm on the surface thereof. Formula (1): 1.4?0.4*Cr+Si?3.2 (wherein element symbols denote measurements of respective element contents by weight %).
    Type: Grant
    Filed: February 27, 2023
    Date of Patent: October 17, 2023
    Assignee: POSCO CO., LTD
    Inventors: Jin-Keun Oh, Yeol-Rae Cho, A-Ra Cho, Jin-Ho Cha, Si-Myoung Heo, Jeong-Won Seo, Seong-Woo Kim
  • Publication number: 20230320957
    Abstract: Disclosed is a composition for anti-aging or skin regeneration comprising Isoprocurcumenol, and use of Isoprocurcumenol or a salt thereof and, more particularly, to a composition for anti-aging or skin regeneration comprising Isoprocurcumenol represented by the following formula (1) or a salt thereof, and use of Isoprocurcumenol or a salt thereof.
    Type: Application
    Filed: August 27, 2021
    Publication date: October 12, 2023
    Applicants: POSCO CO., LTD, POSTECH Research and Business Development Foundation, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Kyong-Tai KIM, Kwang-Ho KWON, Sung-Wook KIM, Sung-Woo JEONG