Patents by Inventor Gwang Hwan HWANG

Gwang Hwan HWANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11657950
    Abstract: A coil component includes a body and a coil portion embedded in the body, wherein the body comprises a first magnetic metal powder particle comprising a core represented by Formula 1 below, and an oxide film comprising at least one of silicon (Si) and chromium (Cr) and formed on a surface of the core, a second magnetic metal powder particle having a larger diameter than the first magnetic metal powder particle, and a third magnetic metal powder particle having a larger diameter than the second magnetic metal powder particle: FeaSibCrc??[Formula 1] where 3 atom %?b?6 atom %, 2.65 atom %?c?3.65 atom %, and a+b+C=100.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: May 23, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jong Ok Jeon, Jeong Ho Lim, Il Jin Park, Soon Kwang Kwon, Gwang Hwan Hwang
  • Patent number: 11581114
    Abstract: A magnetic powder contains a magnetic metal particle comprising iron (Fe) and an insulating coating layer disposed on a surface of the magnetic metal particle and comprising tin (Sn), phosphorous (P) and oxygen (O), and a coil component contains such a magnetic powder.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: February 14, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Il Jin Park, Jun Sung Lee, Joong Won Park, Gwang Hwan Hwang, Soon Kwang Kwon
  • Patent number: 11367558
    Abstract: A magnetic composition includes first, second, and third magnetic metal particles. The first magnetic metal particles have an average particle size of 10 ?m to 28 ?m; the second magnetic metal particles have an average particle size of 1 ?m to 4.5 ?m; and the third magnetic metal particles include insulating layers disposed on surfaces thereof and have a particle size of 300 nm or less. Therefore, eddy current loss of an inductor having a body formed of the magnetic composition may be improved, and high efficiency and inductance of the inductor may be secured.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: June 21, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Se Hyung Lee, Je Ik Moon, Jung Wook Seo, Jun Sung Lee, Woo Jin Lee, Kang Ryong Choi, Il Jin Park, Gwang Hwan Hwang
  • Publication number: 20210225575
    Abstract: A coil component includes a body and a coil portion embedded in the body, wherein the body comprises a first magnetic metal powder particle comprising a core represented by Formula 1 below, and an oxide film comprising at least one of silicon (Si) and chromium (Cr) and formed on a surface of the core, a second magnetic metal powder particle having a larger diameter than the first magnetic metal powder particle, and a third magnetic metal powder particle having a larger diameter than the second magnetic metal powder particle: FeaSibCrc??[Formula 1] where 3 atom %?b?6 atom %, 2.65 atom %?c?3.65 atom %, and a+b+C=100.
    Type: Application
    Filed: June 15, 2020
    Publication date: July 22, 2021
    Inventors: Jong Ok JEON, Jeong Ho LIM, Il Jin PARK, Soon Kwang KWON, Gwang Hwan HWANG
  • Publication number: 20210217546
    Abstract: A magnetic powder contains a magnetic metal particle comprising iron (Fe) and an insulating coating layer disposed on a surface of the magnetic metal particle and comprising tin (Sn), phosphorous (P) and oxygen (O), and a coil component contains such a magnetic powder.
    Type: Application
    Filed: May 20, 2020
    Publication date: July 15, 2021
    Inventors: Il Jin PARK, Jun Sung LEE, Joong Won PARK, Gwang Hwan HWANG, Soon Kwang KWON
  • Publication number: 20200168375
    Abstract: A coil component includes a body having one surface and the other surface facing each other, and a plurality of wall surfaces connecting the one surface and the other surface, and having a distance from the one surface to the other surface of 0.65 mm or less (excluding 0 mm); and a coil portion embedded in the body, wherein the body comprises an Fe—Si—B—Nb—Cu-based metal magnetic powder particle represented by the following chemical formula 1, wherein the Fe—Si—B—Nb—Cu-based metal magnetic powder particle comprises a crystal grain of 20 nm or less (excluding 0 mm), FeaSibBcNbdCue??[Chemical Formula 1] (where 73 atom %?a?77 atom %, 10 atom %?b?14 atom %, 9 atom%?c?11 atom %, 2 atom %?d?3 atom %, 0.5 atom %?e?1 atom %, and a+b+c+d+e=100).
    Type: Application
    Filed: September 10, 2019
    Publication date: May 28, 2020
    Inventors: Il Jin PARK, Gwang Hwan HWANG, Jun Sung LEE, Soon Kwang KWON
  • Publication number: 20200066437
    Abstract: A magnetic composition includes first, second, and third magnetic metal particles. The first magnetic metal particles have an average particle size of 10 ?m to 28 ?m; the second magnetic metal particles have an average particle size of 1 ?m to 4.5 ?m; and the third magnetic metal particles include insulating layers disposed on surfaces thereof and have a particle size of 300 nm or less. Therefore, eddy current loss of an inductor having a body formed of the magnetic composition may be improved, and high efficiency and inductance of the inductor may be secured.
    Type: Application
    Filed: October 30, 2019
    Publication date: February 27, 2020
    Inventors: Se Hyung LEE, Je Ik MOON, Jung Wook SEO, Jun Sung LEE, Woo Jin LEE, Kang Ryong CHOI, Il Jin PARK, Gwang Hwan HWANG
  • Patent number: 10497505
    Abstract: A magnetic composition includes first, second, and third magnetic metal particles. The first magnetic metal particles have an average particle size of 10 ?m to 28 ?m; the second magnetic metal particles have an average particle size of 1 ?m to 4.5 ?m; and the third magnetic metal particles include insulating layers disposed on surfaces thereof and have a particle size of 300 nm or less. Therefore, eddy current loss of an inductor having a body formed of the magnetic composition may be improved, and high efficiency and inductance of the inductor may be secured.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: December 3, 2019
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Se Hyung Lee, Je Ik Moon, Jung Wook Seo, Jun Sung Lee, Woo Jin Lee, Kang Ryong Choi, Il Jin Park, Gwang Hwan Hwang
  • Publication number: 20180061550
    Abstract: A magnetic composition includes first, second, and third magnetic metal particles. The first magnetic metal particles have an average particle size of 10 ?m to 28 ?m; the second magnetic metal particles have an average particle size of 1 ?m to 4.5 ?m; and the third magnetic metal particles include insulating layers disposed on surfaces thereof and have a particle size of 300 nm or less. Therefore, eddy current loss of an inductor having a body formed of the magnetic composition may be improved, and high efficiency and inductance of the inductor may be secured.
    Type: Application
    Filed: March 28, 2017
    Publication date: March 1, 2018
    Inventors: Se Hyung LEE, Je Ik MOON, Jung Wook SEO, Jun Sung LEE, Woo Jin LEE, Kang Ryong CHOI, Il Jin PARK, Gwang Hwan HWANG
  • Publication number: 20150028983
    Abstract: A magnetic paste composition for a chip electronic component, a chip electronic component, and a manufacturing method therof are provided. The chip electronic component is capable of being manufactured in a thin-film to allow for thinness and miniaturization thereof, thereby preventing a deterioration in efficiency thereof due to core loss even under high frequency and high current conditions. The chip electronic component exhibits high permeability, high efficiency, and a high Isat value by decreasing porosity.
    Type: Application
    Filed: April 25, 2014
    Publication date: January 29, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Han Wool RYU, Gwang Hwan HWANG, Kwi Jong LEE, Hwan Soo LEE, Hang Kyu CHO