Patents Assigned to Posco
  • Publication number: 20250070151
    Abstract: It is related to a positive active material for all solid batteries, comprising: a positive active material with layered crystal structure, and wherein, a XRD spectrum of a grain of the positive active material has diffraction peaks corresponding to the (003) plane and the (110) plane, and a ratio of the full width at half maximum (FWHM) of the diffraction peak corresponding to the (110) plane to the full width at half maximum (FWHM) of the diffraction peak corresponding to the (003) plane is 1.30 to 1.60.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 27, 2025
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Yooncheol PARK, Ji Woong MOON, Tai Hee EUN, Young Sang KIM, Jeongsik YUN, Sang Cheol NAM
  • Patent number: 12234526
    Abstract: Provided are a steel plate for a pressure vessel with excellent cryogenic toughness and excellent ductility, and a manufacturing method thereof. The steel plate for a pressure vessel of the present invention comprises, in weight %, 0.05 to 0.15% of C; 0.20 to 0.40% of Si; 0.3 to 0.6% of Mn; 0.001 to 0.05% of Al; 0.012% or less of P; 0.015% or less of S; 4.0 to 5.0% of Ni; 0.001 to 0.10% of In; and the balance being Fe and unavoidable impurities, wherein a steel microstructure consists of 15 to 80 area % of tempered bainite and the balance being tempered martensite.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: February 25, 2025
    Assignee: POSCO HOLDINGS INC.
    Inventor: Soon-Taik Hong
  • Publication number: 20250059616
    Abstract: A double oriented electrical steel sheet according to an exemplary embodiment of the present disclosure contains, in wt %, at least 2.0% of Si, more than 0% and 0.02% or less of AI, 0.02-0.50% of Mn, more than 0% and 0.004% or less of C, and 0.0005-0.005% of S, with the remainder comprising Fe and inevitable impurities, wherein the area percentage of grains having a grain size of 2000 ?m or less is 25% or less.
    Type: Application
    Filed: December 20, 2022
    Publication date: February 20, 2025
    Applicant: POSCO CO., LTD
    Inventors: Hyunwoo Mun, Se Il Lee, Su-Yong Shin, Yunsu Kim
  • Publication number: 20250062347
    Abstract: The present exemplary embodiments relate to a graphite-based negative electrode material, a method of manufacturing the same, a negative electrode including the same, and a lithium secondary battery including the same. The graphite-based negative electrode material according to an exemplary embodiment includes: a graphite oxide obtained by oxidizing a surface of first graphite, and a graphite coating including second graphite and low crystalline carbon positioned on a surface of the second graphite, wherein the graphite coating to the graphite oxide is 1/9 to 1/3.
    Type: Application
    Filed: October 20, 2022
    Publication date: February 20, 2025
    Applicant: POSCO FUTURE M CO., LTD.
    Inventors: Ga Eul LEE, Ji Kwon JUNG, Heon Young LEE, Kyoung Muk LEE, Hae Jun KWON, Jin Wook MIN
  • Publication number: 20250062351
    Abstract: The present exemplary embodiment relates to a negative active material precursor and its manufacturing method. According to an exemplary embodiment, it is disclosed a negative active material precursor, comprising: a stacked portion disposed at a center of the negative active material precursor and where graphite particles are stacked; and at least one of void portion disposed between the center and a surface portion of the negative active material precursor, wherein, an average particle diameter D50 is 10 to 18 ?m, and the below equation 1 is satisfied. ( D ? 90 - D ? 10 ) / D ? 50 ? 1. ? Equation ? 1 ? (In equation 1, D10, D50, and D90 mean particle diameters corresponding to 10, 50, and 90% volume accumulation from a small size, respectively.
    Type: Application
    Filed: December 13, 2022
    Publication date: February 20, 2025
    Applicants: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Gang Ho LEE, Sei Min PARK, Jong Hoon YOON, Yong Jung KIM, Jang-Yul KIM
  • Publication number: 20250058856
    Abstract: Disclosed herein are a floating structure and a wind power generation apparatus. The floating structure according to an aspect of the disclosure includes a plurality of columns providing buoyancy and a connecting body connecting the plurality of columns, wherein at least one of the plurality of columns includes a plurality of column bodies connected to each other, and a hollow portion formed surrounded by the plurality of column bodies.
    Type: Application
    Filed: October 27, 2022
    Publication date: February 20, 2025
    Applicant: POSCO CO., LTD
    Inventors: Eungsoo Kim, Myunghyun Noh, Kyusik Park
  • Publication number: 20250060054
    Abstract: According to aspects of the present invention, provided are a welded steel tube and a manufacturing method for the same which can provide excellent wear resistance and also minimize hot cracking of the welded portion, so a lifespan thereof may be effectively maximized even when applied in harsh wear-resistant environments.
    Type: Application
    Filed: December 20, 2022
    Publication date: February 20, 2025
    Applicant: POSCO Co., Ltd
    Inventor: Sang-Chul LEE
  • Publication number: 20250062352
    Abstract: The present embodiment relates to an anode active material precursor, an anode active material, and a method for manufacturing same. An anode active material precursor according to an embodiment comprises: a carbon-based material comprising a metal compound; and a petroleum-based pitch, wherein the petroleum-based pitch comprises, on the basis of 10 parts by weight of the carbon-based material, 3 to 10 parts by weight, the softening point of the petroleum-based pitch may be 220-280° C., and the content of the metal compound may be greater than or equal to 10 ppm.
    Type: Application
    Filed: December 6, 2022
    Publication date: February 20, 2025
    Applicants: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Gang Ho LEE, Sei Min PARK, Jong Hoon YOON, Yong Jung KIM, Jang-Yul KIM
  • Publication number: 20250059648
    Abstract: An insulating coating composition for an electrical steel sheet, according to an embodiment of the present invention, comprises, on the basis of 100 wt % of a total composition: 10 to 50 wt % of a first composition including first inorganic material particles and second inorganic material particles; 10 to 50 wt % of a second composition including a metal phosphate; and 20 to 60 wt % of an organic/inorganic composite in which inorganic nano particles are substituted in an organic resin.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 20, 2025
    Applicant: POSCO CO., LTD
    Inventors: Jungwoo Kim, Bongwoo Ha, Donggyu Lee, Taeyoung No
  • Publication number: 20250059618
    Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention includes: a steel sheet base material containing, by wt %: 2.0 to 6.5% of Si, 0.1 to 1.3% of Al, 0.3 to 2.0% of Mn, 0.005 to 0.06% of Cr, and a balance of Fe and other inevitable impurities; and an insulating coating film positioned on the steel sheet base material, wherein Formula 1 below is satisfied before stress relief annealing, and Formula 2 below is satisfied after the stress relief annealing. 0.1 ? [ Mn ? coating ? film ] ? / [ Mn ? 50 ] [ Formula ? 1 ] 10 ? [ Mn ? coating ? film ] ? / [ Mn ? 50 ] ? 1 [ Formula ? 2 ] (in Formulas 1 and 2, [Mn coating film] refers to an average content of Mn (wt %) in the insulating coating film, and [Mn 50] refers to a content of Mn (wt %) at a depth of 50 ?m from an interface between the steel sheet base material and the insulating coating film toward an inside of the steel sheet base material.
    Type: Application
    Filed: December 21, 2022
    Publication date: February 20, 2025
    Applicant: POSCO CO., LTD
    Inventor: Soobin Kwon
  • Publication number: 20250059624
    Abstract: Provided is a method of recovery lithium ion, including adding a residue after leaching lithium from an ore containing spodumene into a solution in which a lithium ion is dissolved; absorbing a lithium ion into the residue by reacting the solution containing the residue at 50-90° C.; and recovering a cake containing a lithium from the residue in which the lithium ion has been absorbed by performing solid-liquid separation.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 20, 2025
    Applicants: POSCO CO., Ltd, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Gi-Chun HAN, Young Geun SON, Sang Won KIM, Kee Uek JEUNG, Seung Goo KIM, Seung Seok LEE, Young-Seon KO
  • Patent number: 12226976
    Abstract: The present disclosure relates to an aluminum-based plated steel that is provided for vehicles by hot forming, an aluminum-based alloy plated steel manufactured using the same, and method of manufacturing thereof.
    Type: Grant
    Filed: January 8, 2024
    Date of Patent: February 18, 2025
    Assignee: POSCO CO., LTD
    Inventors: Jin-Keun Oh, Il-Ryoung Sohn, Seong-Woo Kim, Jeom-Soo Shin
  • Patent number: 12227824
    Abstract: The present disclosure relates to a steel wire rod enabling the omission of softening heat treatment and a method of manufacturing same. An embodiment of the present disclosure provides a steel wire rod enabling the omission of softening heat treatment and a method of manufacturing same, the steel wire rod comprising, in weight %, 0.2-0.45% of C, 0.02-0.4% of Si, 0.3-1.5% of Mn, 0.01-1.5% of Cr, 0.02-0.05% of Al, 0.01-0.5% of Mo, 0.01% or less of N, and the balance Fe and other unavoidable impurities, wherein the microstructure of the steel wire rod is a composite structure of proeutectoid ferrite+perlite as a main phase; the steel wire rod contains 10 area % or less (including 0%) of at least one of bainite or martensite; and the average colony size of the perlite is 5 ?m or less.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: February 18, 2025
    Assignee: POSCO CO., LTD
    Inventors: Jae-Seung Lee, Yo-Sep Yang, In-Gyu Park, Han-Hwi Kim
  • Patent number: 12227826
    Abstract: An embodiment of the present invention provides a steel plate for a pressure vessel having excellent hydrogen-induced cracking resistance and a method of manufacturing same, the steel plate comprising, in weight %, 0.2 to 0.3% of carbon (C), 0.05 to 0.50% of silicon (Si), 0.1% to 0.5% (exclusive) of manganese (Mn) , 0.005 to 0.1% of aluminum (Al), 0.010% or less of phosphorus (P) , 0.0015% or less of sulfur (S), 0.001 to 0.03% of niobium (Nb), 0.001 to 0.03% of vanadium (V) , 0.001 to 0.03% of titanium (Ti), 0.01 to 0.20% of chromium (Cr), 0.01 to 0.15% of molybdenum (Mo) , 0.01 to 0.50% of copper (Cu) , 0.05 to 0.50% of nickel (Ni), 0.0005 to 0.0040% of calcium (Ca), and the balance of Fe and other inevitable impurities, wherein the average grain size of ferrite is 5-20 ?m.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: February 18, 2025
    Assignee: POSCO CO., LTD
    Inventor: Dae-Woo Kim
  • Publication number: 20250054953
    Abstract: A positive electrode active material for an all-solid-state battery of the present exemplary embodiments may include: a core including a lithium nickel-based oxide; a first coating layer containing cobalt which is placed on a surface of the core; and a second coating layer containing a lithium transition metal oxide which is placed on a surface of the first coating layer.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 13, 2025
    Applicants: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Ji Woong MOON, Tai Hee EUN, Yooncheol PARK, Jung Hoon SONG, Jeongsik YUN, Sang Cheol NAM
  • Publication number: 20250051889
    Abstract: The present invention relates to a high-strength steel sheet having excellent formability and a high yield ratio, and a manufacturing method therefor, and more particularly, to a high-strength steel sheet having excellent formability and a high yield ratio, and a manufacturing method therefor, the steel sheet having various uses such as that of vehicle parts.
    Type: Application
    Filed: December 14, 2022
    Publication date: February 13, 2025
    Applicant: POSCO CO., LTD
    Inventors: Jae-Hoon LEE, Seong-Ho HAN, Yong-Hoon CHOI
  • Publication number: 20250051929
    Abstract: The present invention relates to a solution composition capable of improving pitting corrosion resistance and blackening resistance of a steel sheet, a steel sheet surface-treated using same, and a method for manufacturing the steel sheet.
    Type: Application
    Filed: December 19, 2022
    Publication date: February 13, 2025
    Applicant: POSCO CO., LTD
    Inventors: Chang-Hoon Choi, Soo-Hyoun Cho, Tae-Chul Kim, Sung-Joo Kim
  • Publication number: 20250054969
    Abstract: Provided are a positive active material for a lithium secondary battery, a positive electrode including the same, and a lithium secondary battery including the same, the positive active material for lithium secondary batteries including a first metal oxide, which includes nickel, cobalt and manganese, being in single particle form; and a second metal oxide that contains nickel, cobalt, and manganese and is in the form of a secondary particle containing a plurality of primary particles and has an average particle diameter D50 larger than that of the first metal oxide; wherein, a nickel content of the second metal oxide is 0.8 mol or more, based on 1 mole of the total of nickel, cobalt and manganese in the second metal oxide, and a nickel content of the first metal oxide is 0.03 mole to 0.17 mole more than the nickel content of the second metal oxide.
    Type: Application
    Filed: December 16, 2022
    Publication date: February 13, 2025
    Applicants: POSCO Holdings Inc., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY, POSCO FUTURE M CO., LTD.
    Inventors: Sang Cheol NAM, Byong Yong YU, Kijoo HONG, Jong II PARK, Sang Hyuk LEE, Kwon Young CHOI
  • Publication number: 20250050307
    Abstract: The present exemplary embodiments relate to a sodium ion adsorbent, a method of manufacturing the same, and a method for removing sodium ions. According to an exemplary embodiment, a sodium ion adsorbent for removing sodium ions may include a compound represented by Chemical Formula 1 below. [Chemical Formula 1] HxM1-xAlSi2O6, in Chemical Formula 1, M is one or more elements selected from Na, K, Cs, and Rb, and 0<x?1.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 13, 2025
    Applicants: POSCO Co., Ltd, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Gi-Chun HAN, Sang Won KIM, Seung Goo KIM, Seung Seok LEE, Young-Seon KO, Young Geun SON, Kee Uek JEUNG
  • Publication number: 20250051867
    Abstract: A grain oriented electrical steel sheet according to an exemplary embodiment of the present invention includes a grain oriented electrical steel sheet base material and a metal oxide layer present on both sides of the grain oriented electrical steel sheet base material. A maximum Al fraction in the metal oxide layer is 0.15 to 1.0 wt %, and a ratio (DWL/DWS) of an average magnetic domain width (DWL) of a side with a large average magnetic domain width to an average magnetic domain width (DWS) of a side with a small average magnetic domain width of one side and the other side of the electrical steel sheet base material is 1.2 to 1.8.
    Type: Application
    Filed: December 21, 2022
    Publication date: February 13, 2025
    Applicant: POSCO CO., LTD
    Inventors: Jae-Song Kim, Il-Nam Yang, Seonghoon Min