Patents by Inventor Youn Kyu Choi

Youn Kyu Choi 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: 11037721
    Abstract: A power inductor includes a substrate having a through hole in a central portion thereof; a first internal coil pattern and a second internal coil pattern each having a spiral shape and provided on opposite surfaces of the substrate outwardly of the through hole; a magnetic body enclosing the substrate on which the first internal coil pattern and the second internal coil pattern are provided, end portions of the first internal coil pattern and the second internal coil pattern being exposed to opposite end surfaces thereof; a first external electrode and a second external electrode provided on the opposite end surfaces of the magnetic body to be connected to the end portions of the first internal coil pattern and the second internal coil pattern, respectively; and an anti-plating layer covering the magnetic body between the first external electrode and the second external electrode.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: June 15, 2021
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Youn Kyu Choi, Hea Ah Kim, Jae Yeol Choi
  • Publication number: 20180247755
    Abstract: A power inductor includes a substrate having a through hole in a central portion thereof; a first internal coil pattern and a second internal coil pattern each having a spiral shape and provided on opposite surfaces of the substrate outwardly of the through hole; a magnetic body enclosing the substrate on which the first internal coil pattern and the second internal coil pattern are provided, end portions of the first internal coil pattern and the second internal coil pattern being exposed to opposite end surfaces thereof; a first external electrode and a second external electrode provided on the opposite end surfaces of the magnetic body to be connected to the end portions of the first internal coil pattern and the second internal coil pattern, respectively; and an anti-plating layer covering the magnetic body between the first external electrode and the second external electrode.
    Type: Application
    Filed: May 2, 2018
    Publication date: August 30, 2018
    Inventors: Youn Kyu CHOI, Hea Ah KIM, Jae Yeol CHOI
  • Publication number: 20180182538
    Abstract: A coil component includes a winding type coil having at least one lead terminal and a body covering the coil and including a magnetic material and a conductive resin applied to an end portion of the lead terminal. An electrode is on the body and connected to the lead terminal and to the conductive resin.
    Type: Application
    Filed: September 27, 2017
    Publication date: June 28, 2018
    Inventor: Youn Kyu CHOI
  • Patent number: 9984812
    Abstract: A power inductor includes a substrate having a through hole in a central portion thereof; a first internal coil pattern and a second internal coil pattern each having a spiral shape and provided on opposite surfaces of the substrate outwardly of the through hole; a magnetic body enclosing the substrate on which the first internal coil pattern and the second internal coil pattern are provided, end portions of the first internal coil pattern and the second internal coil pattern being exposed to opposite end surfaces thereof; a first external electrode and a second external electrode provided on the opposite end surfaces of the magnetic body to be connected to the end portions of the first internal coil pattern and the second internal coil pattern, respectively; and an anti-plating layer covering the magnetic body between the first external electrode and the second external electrode.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: May 29, 2018
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Youn Kyu Choi, Hea Ah Kim, Jae Yeol Choi
  • Patent number: 9875839
    Abstract: A magnetic composition includes: coarse powder containing a non-crystalline iron-based material; medium powder containing a crystalline iron-based material; and fine powder containing nickel. A ratio of the coarse powder and the medium powder is in a range of 65:35 to 80:20, and the amount of the fine powder is in a range of 3 wt % to 7 wt % on the basis of a total weight of the coarse powder and the medium powder.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: January 23, 2018
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Youn Kyu Choi, Mi Jung Kang, Hea Ah Kim, Yun Young Yang, Jae Yeol Choi
  • Patent number: 9704640
    Abstract: There is provided a chip electronic component including; a magnetic body containing magnetic metal powder; an internal coil part embedded in the magnetic body; and a plating spreading prevention part coated on a surface of the magnetic body. The plating spreading prevention part contains phosphate-based glass. Whereby, plating spread generated in the surface of the chip electronic component at the time of forming the external electrodes may be prevented.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: July 11, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Youn Kyu Choi, Hye Ah Kim, Yun Young Yang, Mi Jung Kang, Jae Yeol Choi
  • Patent number: 9659704
    Abstract: A chip electronic component includes a magnetic body containing magnetic metal powder, internal coil parts embedded in the magnetic body, and an anti-plating layer disposed on at least one of upper and lower surfaces of the magnetic body. The anti-plating layer contains magnetic metal powder having particle sizes within the range of 0.1 ?m to 10 ?m.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: May 23, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yun Young Yang, Youn Kyu Choi, Hye Ah Kim, Do Won Kang, Mi Jung Kang
  • Publication number: 20160217920
    Abstract: A power inductor includes a substrate having a through hole in a central portion thereof; a first internal coil pattern and a second internal coil pattern each having a spiral shape and provided on opposite surfaces of the substrate outwardly of the through hole; a magnetic body enclosing the substrate on which the first internal coil pattern and the second internal coil pattern are provided, end portions of the first internal coil pattern and the second internal coil pattern being exposed to opposite end surfaces thereof; a first external electrode and a second external electrode provided on the opposite end surfaces of the magnetic body to be connected to the end portions of the first internal coil pattern and the second internal coil pattern, respectively; and an anti-plating layer covering the magnetic body between the first external electrode and the second external electrode.
    Type: Application
    Filed: December 29, 2015
    Publication date: July 28, 2016
    Inventors: Youn Kyu CHOI, Hea Ah KIM, Jae Yeol CHOI
  • Publication number: 20160217902
    Abstract: A magnetic composition includes: coarse powder containing a non-crystalline iron-based material; medium powder containing a crystalline iron-based material; and fine powder containing nickel. A ratio of the coarse powder and the medium powder is in a range of 65:35 to 80:20, and the amount of the fine powder is in a range of 3 wt % to 7 wt % on the basis of a total weight of the coarse powder and the medium powder.
    Type: Application
    Filed: January 19, 2016
    Publication date: July 28, 2016
    Inventors: Youn Kyu CHOI, Mi Jung KANG, Hea Ah KIM, Yun Young YANG, Jae Yeol CHOI
  • Patent number: 9370743
    Abstract: A carbon dioxide adsorbent may include a complex oxide including barium and titanium, wherein the complex oxide has a perovskite crystalline structure and is represented by the general formula BaxTiyOz, and an atomic ratio of Ba/Ti ranges from about 0.95 to about 1.7. The carbon dioxide adsorbent may be included in a carbon dioxide capture module. The carbon dioxide adsorbent may also be used in a method of separating carbon dioxide.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: June 21, 2016
    Assignees: Samsung Electronics Co., Ltd, Samsung Electro-Mechanics Co., Ltd.
    Inventors: Soon Chul Kwon, Ji Ho Park, Hyuk Jae Kwon, Yun Jung Park, Hyun Chul Lee, Youn-Kyu Choi
  • Publication number: 20160126004
    Abstract: A chip electronic component includes a magnetic body containing magnetic metal powder, internal coil parts embedded in the magnetic body, and an anti-plating layer disposed on at least one of upper and lower surfaces of the magnetic body. The anti-plating layer contains magnetic metal powder having particle sizes within the range of 0.1 ?m to 10 ?m.
    Type: Application
    Filed: October 16, 2015
    Publication date: May 5, 2016
    Inventors: Yun Young YANG, Youn Kyu CHOI, Hye Ah KIM, Do Won KANG, Mi Jung KANG
  • Publication number: 20160086716
    Abstract: There is provided a chip electronic component including; a magnetic body containing magnetic metal powder; an internal coil part embedded in the magnetic body; and a plating spreading prevention part coated on a surface of the magnetic body. The plating spreading prevention part contains phosphate-based glass. Whereby, plating spread generated in the surface of the chip electronic component at the time of forming the external electrodes may be prevented.
    Type: Application
    Filed: May 6, 2015
    Publication date: March 24, 2016
    Inventors: Youn Kyu CHOI, Hye Ah KIM, Yun Young YANG, Mi Jung KANG, Jae Yeol CHOI
  • Publication number: 20140174292
    Abstract: A carbon dioxide adsorbent may include a complex oxide including barium and titanium, wherein the complex oxide has a perovskite crystalline structure and is represented by the general formula BaxTiyOz, and an atomic ratio of Ba/Ti ranges from about 0.95 to about 1.7. The carbon dioxide adsorbent may be included in a carbon dioxide capture module. The carbon dioxide adsorbent may also be used in a method of separating carbon dioxide.
    Type: Application
    Filed: September 13, 2013
    Publication date: June 26, 2014
    Applicants: SAMSUNG FINE CHEMICALS CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Soon Chul KWON, Ji Ho PARK, Hyuk Jae KWON, Yun Jung PARK, Hyun Chul LEE, Youn-Kyu CHOI
  • Patent number: 7229035
    Abstract: Disclosed herein is a method of deagglomerating ceramic powder to inhibit agglomeration and provide a uniform particle size, a deagglomeration mill used for the above method, and a method of preparing uniformly mixed ceramic slurry using the deagglomerated ceramic powder. The deagglomeration method of the ceramic powder includes loading a mixture of ceramic powder and solvent into the deagglomeration mill which includes a hollow cylindrical mill cover having a diameter larger than a length and having a plurality of beads therein; rotating an impeller of a main shaft disposed longitudinally at an internal center portion of the mill cover at a peripheral velocity of 6–10 m/s, using a driving means; deagglomerating the ceramic powder by the action of beads which are moved by a rotational force of the impeller; and discharging the mixture of ceramic powder and solvent from the deagglomeration mill.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: June 12, 2007
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Eun Sang Na, Hyeon Pyo Jeon, Dong Hwan Seo, Youn Kyu Choi, Sung Hyung Kang