公开(公告)号：US12297544B2

公开(公告)日：2025-05-13

申请号：US18468268

申请日：2023-09-15

Applicant: POSCO CO., LTD

Inventor： Il-Ryoung Sohn ,  Hyeon-Seok Hwang ,  Jong-Sang Kim

IPC: C23C2/06 ,  B21D22/02 ,  B21D37/16 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C23C2/02 ,  C23C2/26 ,  C23C2/28

Abstract: Provided is a hot press formed product, which is prepared by means of hot press forming of a Zn—Al—Mg-based plated steel material comprising base iron and a Zn—Al—Mg-based plated layer, and a method for preparing the same, the hot press formed product comprising an oxide layer formed on the surface thereof, wherein the content ratio of Al to Mg (Al/Mg) in the oxide layer is 0.8 or more.

公开(公告)号：US20250131577A1

公开(公告)日：2025-04-24

申请号：US18692031

申请日：2022-12-16

Applicant: POSCO CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY ,  POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Tae Hyun OH ,  Sungbin KIM ,  Sang Hyeok PARK ,  Laekyoung LEE ,  Jun Young SEO

IPC: G06T7/246 ,  G01P13/00 ,  G06T7/00 ,  G06T7/40 ,  G06T7/579

Abstract: Disclosed is a motion amplification device including: an encoder receiving a first frame and a second frame arbitrarily adjacent in an image, and decomposing the first frame into first shape information and first texture information and decomposing the second frame into second shape information and second texture information; a first module generating a third frame in which a motion of an object is amplified based on the first shape information, the second shape information, and the second texture information; a second module analyzing an intensity of the motion based on the first shape information, the second shape information, and the first texture information; and a third module generating amplification image data indicating the intensity of the motion on the third frame.

公开(公告)号：US20250109453A1

公开(公告)日：2025-04-03

申请号：US18723234

申请日：2022-12-20

Applicant: POSCO Co., Ltd

Inventor： Jae-Hoon KIM ,  Su-Yong SHIN ,  Yunsu KIM

IPC: C21D9/46 ,  C21D6/00 ,  C21D8/12 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/34 ,  C22C38/60 ,  H01F1/153

Abstract: A non-oriented electrical steel sheet according to an embodiment of the present invention contains, by wt %: 3.1 to 3.8% of Si, 0.5 to 1.5% of Al, 0.3 to 1.5% of Mn, 0.01 to 0.15% of Cr, 0.003 to 0.08% of Sn, 0.003 to 0.06% of Sb, and a balance of Fe and inevitable impurities.
The non-oriented electrical steel sheet according to an embodiment of the present invention includes a surface portion present from a surface of the steel sheet to 1/10 of a thickness of the steel sheet in a direction from the surface of the steel sheet toward an inside of the steel sheet, and a central portion, and when punching the non-oriented electrical steel sheet, a length of a plastically deformed portion may be 100 μm or less. In this case, the plastically deformed portion refers to a length of a portion from a punched end portion where hardness of the surface portion exceeds 1.10 times that of the central portion.

公开(公告)号：US20250092484A1

公开(公告)日：2025-03-20

申请号：US18967339

申请日：2024-12-03

Applicant: POSCO CO., LTD

Inventor： Yu-Mi HA ,  Jun-Sung YEOM

IPC: C21D9/46 ,  B32B15/01 ,  C21D6/00 ,  C21D8/02 ,  C22C18/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40

Abstract: Provided is a method for manufacturing a plated steel sheet. The method includes: performing continuous casting on steel containing, by wt %, 0.003 to 0.009% of C, 0.05% or less of Si, 0.4 to 1.0% of Mn, 0.04 to 0.09% of P, 0.01% or less of S, 0.005% or less of N, 0.1% or less of S·Al, 0.03 to 0.08% of Mo, 0.005 to 0.03% of Ti, 0.02 to 0.045% of Nb, 0.06 to 0.15% of Cu, 0.003% or less of B, and a balance of Fe and unavoidable impurities; reheating a slab obtained by the continuous casting; providing a hot-rolled steel sheet by hot rolling the reheated slab; coiling the hot-rolled steel sheet; providing a cold-rolled steel sheet by cold rolling the hot-rolled steel sheet; annealing the cold-rolled steel sheet; and hot-dip galvanizing the annealed cold-rolled steel sheet by immersing the annealed cold-rolled steel sheet in a zinc-based plating bath.

公开(公告)号：US20250073824A1

公开(公告)日：2025-03-06

申请号：US18722253

申请日：2022-12-20

Applicant: POSCO CO., LTD

Inventor： Sang-Chul LEE

IPC: B23K31/02

Abstract: An aspect of the present invention may provide a method for manufacturing a welded steel pipe having superior wear resistance and low-temperature toughness. And, the present invention may also provide a method for manufacturing a welded steel pipe having particularly suitable physical properties for delivering the slurry by minimizing occurrence of high-temperature cracks in a welded portion.

公开(公告)号：US20250070313A1

公开(公告)日：2025-02-27

申请号：US18720984

申请日：2022-12-21

Applicant: POSCO CO., LTD. ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

Inventor： Won HA

IPC: H01M10/6568 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6556 ,  H01M50/204 ,  H01M50/242 ,  H01M50/249 ,  H01M50/258 ,  H01M50/271

Abstract: A heat controllable battery pack is provided. The battery pack includes a lower cover including a first cooling line, through which a refrigerant moves, installed therein and supporting a lower portion of a plurality of cell modules, a plurality of crash structures installed in positions between the plurality of cell modules on an upper portion of the lower cover and including a second cooling line, through which the refrigerant cooling the cell modules moves, installed therein, a side frame protecting side surfaces of the plurality of cell modules, and an upper cover covering an upper portion of the plurality of cell modules.

公开(公告)号：US20250066870A1

公开(公告)日：2025-02-27

申请号：US18945501

申请日：2024-11-12

Applicant: POSCO CO., LTD

Inventor： Hang-Sik CHO ,  Young-Roc IM

IPC: C21D9/46 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C23C2/04 ,  C23C2/40

Abstract: Provided is a method of manufacturing a cold-rolled steel sheet. The method includes: cold-rolling a steel material; applying nickel (Ni) powder on a surface of the cold-rolled steel material in a coating amount of 300 mg/m2; heating the steel material to completely transform the steel material to austenite; slowly cooling the heated steel material at a cooling rate of 5-12° C./s to a slow cooling termination temperature of 630-670° C., and maintaining the steel material at the slow cooling termination temperature for 10-90 seconds; rapidly cooling the slowly cooled and maintained steel material at a cooling rate of 7-30° C./s to a temperature range of a martensitic transformation termination temperature or higher and a martensitic transformation initiation temperature or lower; and maintaining the rapidly cooled steel material at a temperature higher than the martensitic transformation initiation temperature and the bainite transformation initiation temperature or lower for 300-600 seconds and partitioning the steel material.

公开(公告)号：US20250059624A1

公开(公告)日：2025-02-20

申请号：US18720948

申请日：2022-12-15

Applicant: POSCO CO., Ltd ,  RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY

Inventor： Gi-Chun HAN ,  Young Geun SON ,  Sang Won KIM ,  Kee Uek JEUNG ,  Seung Goo KIM ,  Seung Seok LEE ,  Young-Seon KO

IPC: C22B26/12 ,  C22B1/02 ,  C22B3/08 ,  C22B3/24

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.

公开(公告)号：US20250059616A1

公开(公告)日：2025-02-20

申请号：US18721100

申请日：2022-12-20

Applicant: POSCO CO., LTD

Inventor： Hyunwoo Mun ,  Se Il Lee ,  Su-Yong Shin ,  Yunsu Kim

IPC: C21D9/46 ,  C21D1/74 ,  C21D6/00 ,  C21D8/12 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  H01F1/147 ,  H01F41/00

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 μm or less is 25% or less.

公开(公告)号：US20250058856A1

公开(公告)日：2025-02-20

申请号：US18718754

申请日：2022-10-27

Applicant: POSCO CO., LTD

Inventor： Eungsoo Kim ,  Myunghyun Noh ,  Kyusik Park

IPC: B63B35/44 ,  B63B1/12 ,  F03D13/25

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.