公开(公告)号：US20230403765A1

公开(公告)日：2023-12-14

申请号：US18238994

申请日：2023-08-28

Applicant: LG ELECTRONICS INC.

Inventor： Yooseok KWON

IPC: H05B3/74 ,  H05B3/00 ,  H05B3/14 ,  H05B3/18 ,  H05B3/28 ,  H05B3/12

CPC classification number: H05B3/74 ,  H05B3/0071 ,  H05B3/141 ,  H05B3/18 ,  H05B3/283 ,  H05B3/12 ,  H05B2203/002 ,  H05B2203/013

Abstract: Discussed is a surface type heating element including a surface type heating element layer including NiCr alloy powders, necks between powder particles of the NiCr alloy powders, and passivation oxide layers formed on a surface of the NiCr alloy powders.

公开(公告)号：US20230091715A1

公开(公告)日：2023-03-23

申请号：US17801630

申请日：2020-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Seojin LEE ,  Yooseok KWON ,  Sanghyun HONG

IPC: C01G39/02 ,  C01G41/02 ,  C01B13/36 ,  B22F1/142

Abstract: Disclosed is a method for producing transition metal oxide fine particles having a size smaller than several micrometers (μm), and more preferably, having a size of several hundred nanometers (nm). To this end, the method for producing transition metal oxide fine particles of the present invention comprises dissolving a transition metal oxide in a strongly basic aqueous solution, and titrating same with a strongly acidic aqueous solution, thereby precipitating transition metal oxide fine particles.

公开(公告)号：US20220357042A1

公开(公告)日：2022-11-10

申请号：US17874097

申请日：2022-07-26

Applicant: LG ELECTRONICS INC.

Inventor： Misun SONG ,  Yooseok KWON

IPC: F24C7/08 ,  F24C7/06

Abstract: An electric heater includes a substrate; and a first plane heating element disposed on one surface of the substrate, in which the first plane heating element includes a first track; a second track spaced apart from the first track; and a third track spaced apart from the second track. At least a portion of the second track is located between the first track and the third track, and the first track and the second track are connected by a first bridge, where the first bridge includes a first outer protrusion protruding toward the third track. The third track is formed with a curved portion which protrudes in an outward direction, and the first outer protrusion faces an inside of the curved portion in the outward direction and is spaced apart from the curved portion.

公开(公告)号：US20210229179A1

公开(公告)日：2021-07-29

申请号：US17050270

申请日：2019-05-10

Applicant: LG Electronics Inc.

Inventor： Sanghyun HONG ,  Jihyun KIM ,  Seojin LEE ,  Sangeun SHIM ,  Jiyoung JUNG ,  Sosan HWANG ,  Yooseok KWON

IPC: B22F9/24 ,  B22F1/00

Abstract: The present invention provides a method for the manufacture of transition metal oxide fine particles, the method comprising the steps of: heating a strong-alkaline aqueous solution while stirring same; adding to and dissolving in the heated strong-alkaline aqueous solution a transition metal oxide; adding a strong-acid aqueous solution to the strong alkaline aqueous solution in which the transition metal oxide is dissolved, while stirring same, thereby re-dissolving a solid generated at the interface between the strong-alkaline aqueous solution and the strong-acid aqueous solution; adjusting the pH of the mixed aqueous solution resulting from mixing the strong-alkaline aqueous solution and the strong acid aqueous solution, through adjustment of the adding rate and amount of the strong-acid aqueous solution, to precipitate transition metal oxide fine particles; and separating the transition metal oxide fine particles from the mixed aqueous solution and sequentially washing, drying, and thermally treating the separated transition metal oxide fine particles.