Patents by Inventor Chang Hak Choi

Chang Hak 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).

  • Publication number: 20240128022
    Abstract: A ceramic electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains. The grain boundary includes a secondary phase including Sn, a rare-earth element, and a first subcomponent. The rare-earth element includes at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La, Gd and Yb. The first subcomponent includes at least one of Si, Mg, and Al.
    Type: Application
    Filed: December 6, 2023
    Publication date: April 18, 2024
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jin Woo Kim, Chang Hak Choi, Seok Hyun Yoon, Ki Yong Lee, Jong Myeong Jeon
  • Patent number: 11958002
    Abstract: A pre-coating filter device includes: a filtration tank comprising a raw water inlet through which raw water flows on one side, and a drain port at the bottom; a top cover coupled to the upper part of the filtration tank and comprising a coupling hole through the middle part; a purified water discharge pipe coupled to the coupling hole of the top cover; a purified water storage space unit coupled to the lower part of the top cover and located within the filtration tank, and comprising a communication pipe connected to the central part; a filter coupling plate body coupled to the lower part of the purified water storage space unit and comprising a plurality of coupling holes through; and a pre-coating filter coupled to the coupling hole of the filter coupling plate body.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: April 16, 2024
    Assignee: K-1ECOTECH CO., LTD.
    Inventors: Jong Hak Kim, Chang Hyoung Choi, Sang Ho Sung
  • Patent number: 11935703
    Abstract: A multilayer electronic component has a body and a non-conductive resin layer. The non-conductive resin layer includes a body cover portion disposed in a region of an external surface of the body in which an electrode layer of an external electrode is not disposed, and an extending portion extending from the body cover portion between the electrode layer and a conductive resin layer of the external electrode, to thereby suppress arc discharge, improve bending strength, and improve moisture resistance.
    Type: Grant
    Filed: January 9, 2023
    Date of Patent: March 19, 2024
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Seok Yi, Jung Min Kim, Bon Seok Koo, Chang Hak Choi, Il Ro Lee, Byung Woo Kang, San Kyeong, Hae Sol Kang
  • Publication number: 20240071690
    Abstract: A multilayer electronic component includes a body including a plurality of dielectric layers and internal electrodes, and an external electrode disposed on the body and connected to the internal electrodes. The body includes an active portion including the plurality of internal electrodes to form capacitance, and cover portions disposed on the active portion, and the cover portions include an outer cover portion including a carbon compound and an inner cover portion disposed between the active portion and the outer cover portion. An average carbon content (Cc2) of the outer cover portion compared to an average carbon content (Cc1) of the inner cover portion satisfies 100?Cc2/Cc1?10,000.
    Type: Application
    Filed: August 14, 2023
    Publication date: February 29, 2024
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sang Yeop KIM, Jin Il KANG, Ji Hun LEE, Chang Hak CHOI
  • Patent number: 11894196
    Abstract: A multilayer ceramic capacitor includes a body including a dielectric layer and first and second internal electrodes stacked in a first direction and having first and second surfaces opposing each other in the first direction, third and fourth surfaces opposing each other in a second direction, and fifth and sixth surfaces opposing each other in a third direction, and first and second external electrodes disposed on the third and fourth surfaces of the body, respectively, and connected to the first and second internal electrodes, respectively. The first and second external electrodes each include a central portion disposed in a center of each of the third and fourth surfaces and an outer portion disposed outside the central portion. T1>T2>T3, in which T1 and T3 are maximum value and minimum value of a thickness of the central portion, respectively, and T2 is a maximum value of a thickness of the outer portion.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: February 6, 2024
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: San Kyeong, Young Soo Yi, Kun Ho Koo, Soung Jin Kim, Ho Yeol Lee, Kyung Ryul Lee, Chang Hak Choi
  • Patent number: 11887786
    Abstract: A ceramic electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains. The grain boundary includes a secondary phase including Sn, a rare-earth element, and a first subcomponent. The rare-earth element includes at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La, Gd and Yb. The first subcomponent includes at least one of Si, Mg, and Al.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: January 30, 2024
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jin Woo Kim, Chang Hak Choi, Seok Hyun Yoon, Ki Yong Lee, Jong Myeong Jeon
  • Patent number: 11848415
    Abstract: An all-solid-state battery includes a body including a solid electrolyte layer, and an anode layer and a cathode layer alternately stacked with the solid electrolyte layer interposed therebetween. A first external electrode is disposed on one side of the body and includes a first electrode layer and a first conductive resin layer disposed on the first electrode layer, and a second external electrode is disposed on another side of the body and includes a second electrode layer and a second conductive resin layer disposed on the second electrode layer. A protective layer is disposed on an entirety of an external surface of the body free of the first and second electrode layers and on the first and second electrode layers, and at least one opening is included in a region of the protective layer disposed on at least one of the first electrode layer and the second electrode layer.
    Type: Grant
    Filed: August 12, 2022
    Date of Patent: December 19, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chang Ryul Jung, Kyung Lock Kim, Jong Sik Yoon, Chang Hak Choi, Byeong Cheol Moon
  • Publication number: 20230402229
    Abstract: A multilayer capacitor includes a capacitor body including a dielectric layer and a plurality of internal electrodes, and external electrodes disposed on both ends of the capacitor body and connected to exposed portions of the plurality of internal electrodes, respectively. Each of the external electrodes includes a conductive layer disposed on the capacitor body to be connected to one or more of the plurality of internal electrodes, a conductive resin layer covering the conductive layer, and including a plurality of metal particles, a plurality of elastic fine powder particles each having an elastic powder particle and a metal film plated on a surface of the elastic powder particle, and a conductive resin surrounding the plurality of metal particles and the plurality of elastic fine powder particles and contacting the conductive layer, and a plating layer covering the conductive resin layer.
    Type: Application
    Filed: August 30, 2023
    Publication date: December 14, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: San Kyeong, Chang Hak Choi, Jae Seok Yi, Bon Seok Koo, Jung Min Kim, Hae Sol Kang, Jun Hyeon Kim
  • Publication number: 20230386749
    Abstract: A multilayer electronic component includes a body including a plurality of dielectric layers and internal electrodes, external electrodes disposed on the body to be connected to the internal electrodes, and a metal oxide disposed between the body and the external electrodes. The metal oxide includes calcium (Ca), zinc (Zn), and silicon (Si), and further includes at least one selected from the group consisting of barium (Ba), boron (B), and aluminum (Al).
    Type: Application
    Filed: October 19, 2022
    Publication date: November 30, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seon Ho PARK, Jae Seok YI, Moon Soo PARK, Chang Hak CHOI
  • Patent number: 11804327
    Abstract: A coil component includes: a body including a magnetic material and a coil of which both ends are externally exposed; intermetallic compounds disposed on the exposed both ends of the coil; and external electrodes disposed on the body to cover the intermetallic compounds. The external electrodes include: conductive resin layers disposed on outer surfaces of the body to contact the exposed both ends of the coil and including base resins, a plurality of metal particles disposed in the base resins, and conductive connecting parts surrounding the plurality of metal particles and contacting the intermetallic compounds. The coil component further includes electrode layers disposed on the conductive resin layers and contacting the conductive connecting parts.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: October 31, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yoon Hee Lee, Bon Seok Koo, Yeon Tae Kim, Chang Hak Choi, Jung Min Kim
  • Publication number: 20230343514
    Abstract: A conductive paste includes: conductive powder containing Cu particles; and a glass frit including an oxide containing alkali metal, wherein a content of the alkali metal is 0.16 wt% or more and 0.35 wt% or less with respect to a total content of the Cu particles.
    Type: Application
    Filed: December 1, 2022
    Publication date: October 26, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Kun Ho KOO, San KYEONG, Soung Jin KIM, Young Soo YI, Ho Yeol LEE, Ic Seob KIM, Kyung Ryul LEE, Chang Hak CHOI
  • Publication number: 20230343517
    Abstract: A dielectric ceramic composition includes a base material main component of barium titanate and a subcomponent. A microstructure of the dielectric ceramic composition after sintering includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %, and an area ratio of the second grain to an area of the total grains is 70% to 95%.
    Type: Application
    Filed: June 27, 2023
    Publication date: October 26, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun YOON, Chan Hee NAM, Song Je JEON, Chang Hak CHOI
  • Patent number: 11798747
    Abstract: A multilayer electronic component include a first non-conductive resin layer, extending between a conductive resin layer and an electrode layer of a first external electrode, and a second non-conductive resin layer extending between a conductive resin layer and an electrode layer of a second external electrode. The first non-conductive layer and the second non-conductive layer may be spaced apart from each other to suppress arc discharge and to improve bending strength.
    Type: Grant
    Filed: October 24, 2022
    Date of Patent: October 24, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Seok Yi, Il Ro Lee, Chang Hak Choi, Bon Seok Koo, Jung Min Kim, Byung Woo Kang, San Kyeong
  • Publication number: 20230326673
    Abstract: A multilayer electronic component includes a body including dielectric layers and internal electrodes alternately disposed with the dielectric layers and external electrodes disposed on the body and connected to the internal electrodes. The one of the internal electrodes includes Ni, Ba, Ti, O, and Tb, and a content of Tb relative to a sum of contents of Ni, Ba, Ti, O, and Tb is 0.45 to 3.0 wt %.
    Type: Application
    Filed: June 15, 2023
    Publication date: October 12, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Min Jung CHO, Byung Kun KIM, Yu Hong OH, Chang Hak CHOI
  • Patent number: 11784005
    Abstract: A multilayer capacitor includes a capacitor body including a dielectric layer and a plurality of internal electrodes, and external electrodes disposed on both ends of the capacitor body and connected to exposed portions of the plurality of internal electrodes, respectively. Each of the external electrodes includes a conductive layer disposed on the capacitor body to be connected to one or more of the plurality of internal electrodes, a conductive resin layer covering the conductive layer, and including a plurality of metal particles, a plurality of elastic fine powder particles each having an elastic powder particle and a metal film plated on a surface of the elastic powder particle, and a conductive resin surrounding the plurality of metal particles and the plurality of elastic fine powder particles and contacting the conductive layer, and a plating layer covering the conductive resin layer.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: October 10, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: San Kyeong, Chang Hak Choi, Jae Seok Yi, Bon Seok Koo, Jung Min Kim, Hae Sol Kang, Jun Hyeon Kim
  • Patent number: 11735364
    Abstract: A multilayer electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode including an electrode layer disposed on the body and connected to the internal electrode and a conductive resin layer disposed on the electrode layer, and the conductive resin layer includes a metal wire, a conductive metal, and a base resin.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: August 22, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jun Hyeon Kim, Hae Sol Kang, Bon Seok Koo, San Kyeong, Chang Hak Choi, Jung Min Kim
  • Patent number: 11728094
    Abstract: A dielectric ceramic composition includes a base material main component of barium titanate and a subcomponent. A microstructure of the dielectric ceramic composition after sintering includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %, and an area ratio of the second grain to an area of the total grains is 70% to 95%.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: August 15, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun Yoon, Chan Hee Nam, Song Je Jeon, Chang Hak Choi
  • Patent number: 11715595
    Abstract: A multilayer electronic component includes a body including dielectric layers and internal electrodes alternately disposed with the dielectric layers and external electrodes disposed on the body and connected to the internal electrodes. The one of the internal electrodes includes Ni, Ba, Ti, O, and Tb, and a content of Tb relative to a sum of contents of Ni, Ba, Ti, O, and Tb is 0.45 to 3.0 wt %.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: August 1, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Min Jung Cho, Byung Kun Kim, Yu Hong Oh, Chang Hak Choi
  • Publication number: 20230207212
    Abstract: A multilayer ceramic capacitor includes a ceramic body including a dielectric layer and including first and second surfaces opposing each other, third and fourth surfaces connecting the first and second surfaces. A plurality of internal electrodes is disposed inside the ceramic body, connected to the first and second surfaces, and have one ends connected to the third and fourth surfaces. First and second side margin parts are disposed on end portions of the internal electrodes connected to the first and second surfaces. The ceramic body includes an active portion forming capacitance by including the plurality of internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween. An average Sn content in a region adjacent to the side margin part of the active portion is greater than an average Sn content in a central region of the active portion.
    Type: Application
    Filed: June 29, 2022
    Publication date: June 29, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jong Myeong JEON, Ki Yong LEE, Jin Woo KIM, Chang Hak CHOI
  • Publication number: 20230187137
    Abstract: A multilayer ceramic capacitor includes a body including a dielectric layer and first and second internal electrodes stacked in a first direction and having first and second surfaces opposing each other in the first direction, third and fourth surfaces opposing each other in a second direction, and fifth and sixth surfaces opposing each other in a third direction, and first and second external electrodes disposed on the third and fourth surfaces of the body, respectively, and connected to the first and second internal electrodes, respectively. The first and second external electrodes each include a central portion disposed in a center of each of the third and fourth surfaces and an outer portion disposed outside the central portion. T1>T2>T3, in which T1 and T3 are maximum value and minimum value of a thickness of the central portion, respectively, and T2 is a maximum value of a thickness of the outer portion.
    Type: Application
    Filed: June 6, 2022
    Publication date: June 15, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: San KYEONG, Young Soo YI, Kun Ho KOO, Soung Jin KIM, Ho Yeol LEE, Kyung Ryul LEE, Chang Hak CHOI