Patents by Inventor Chan Hee Nam

Chan Hee Nam 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: 20240076242
    Abstract: A multilayer ceramic capacitor includes: a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; and first and second external electrodes formed on an outer surface of the ceramic body and electrically connected to the first and second internal electrodes, respectively. In a microstructure of the dielectric layer, dielectric grains are divided by a dielectric grain size into sections each having an interval of 50 nm, respectively, a fraction of the dielectric grains in each of the sections within a range of 50 nm to 450 nm is within a range of 0.025 to 0.20, and a thickness of the dielectric layer is 0.8 ?m or less.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 7, 2024
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun YOON, Jung Deok PARK, Chan Hee NAM, Dong Hun KIM
  • Patent number: 11845698
    Abstract: A multilayer ceramic capacitor includes: a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; and first and second external electrodes formed on an outer surface of the ceramic body and electrically connected to the first and second internal electrodes, respectively. In a microstructure of the dielectric layer, dielectric grains are divided by a dielectric grain size into sections each having an interval of 50 nm, respectively, a fraction of the dielectric grains in each of the sections within a range of 50 nm to 450 nm is within a range of 0.025 to 0.20, and a thickness of the dielectric layer is 0.8 ?m or less.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: December 19, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun Yoon, Jung Deok Park, Chan Hee Nam, Dong Hun Kim
  • 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: 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
  • Publication number: 20220220036
    Abstract: A multilayer ceramic capacitor includes: a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; and first and second external electrodes formed on an outer surface of the ceramic body and electrically connected to the first and second internal electrodes, respectively. In a microstructure of the dielectric layer, dielectric grains are divided by a dielectric grain size into sections each having an interval of 50 nm, respectively, a fraction of the dielectric grains in each of the sections within a range of 50 nm to 450 nm is within a range of 0.025 to 0.20, and a thickness of the dielectric layer is 0.8 ?m or less.
    Type: Application
    Filed: March 17, 2022
    Publication date: July 14, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun YOON, Jung Deok PARK, Chan Hee NAM, Dong Hun KIM
  • Publication number: 20220199327
    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: March 11, 2022
    Publication date: June 23, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun YOON, Chan Hee NAM, Song Je JEON, Chang Hak CHOI
  • Patent number: 11306031
    Abstract: A multilayer ceramic capacitor includes: a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; and first and second external electrodes formed on an outer surface of the ceramic body and electrically connected to the first and second internal electrodes, respectively. In a microstructure of the dielectric layer, dielectric grains are divided by a dielectric grain size into sections each having an interval of 50 nm, respectively, a fraction of the dielectric grains in each of the sections within a range of 50 nm to 450 nm is within a range of 0.025 to 0.20, and a thickness of the dielectric layer is 0.8 ?m or less.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: April 19, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun Yoon, Jung Deok Park, Chan Hee Nam, Dong Hun Kim
  • Patent number: 11309129
    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: January 30, 2020
    Date of Patent: April 19, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun Yoon, Chan Hee Nam, Song Je Jeon, Chang Hak Choi
  • Publication number: 20200411239
    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: January 30, 2020
    Publication date: December 31, 2020
    Inventors: Seok Hyun YOON, Chan Hee NAM, Song Je JEON, Chang Hak CHOI
  • Publication number: 20200165166
    Abstract: A multilayer ceramic capacitor includes: a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; and first and second external electrodes formed on an outer surface of the ceramic body and electrically connected to the first and second internal electrodes, respectively. In a microstructure of the dielectric layer, dielectric grains are divided by a dielectric grain size into sections each having an interval of 50 nm, respectively, a fraction of the dielectric grains in each of the sections within a range of 50 nm to 450 nm is within a range of 0.025 to 0.20, and a thickness of the dielectric layer is 0.8 ?m or less.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 28, 2020
    Inventors: Seok Hyun YOON, Jung Deok PARK, Chan Hee NAM, Dong Hun KIM
  • Patent number: 10584066
    Abstract: A multilayer ceramic capacitor includes: a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; and first and second external electrodes formed on an outer surface of the ceramic body and electrically connected to the first and second internal electrodes, respectively. In a microstructure of the dielectric layer, dielectric grains are divided by a dielectric grain size into sections each having an interval of 50 nm, respectively, a fraction of the dielectric grains in each of the sections within a range of 50 nm to 450 nm is within a range of 0.025 to 0.20, and a thickness of the dielectric layer is 0.8 ?m or less.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: March 10, 2020
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun Yoon, Jung Deok Park, Chan Hee Nam, Dong Hun Kim
  • Publication number: 20190100465
    Abstract: A multilayer ceramic capacitor includes: a ceramic body in which dielectric layers and first and second internal electrodes are alternately stacked; and first and second external electrodes formed on an outer surface of the ceramic body and electrically connected to the first and second internal electrodes, respectively. In a microstructure of the dielectric layer, dielectric grains are divided by a dielectric grain size into sections each having an interval of 50 nm, respectively, a fraction of the dielectric grains in each of the sections within a range of 50 nm to 450 nm is within a range of 0.025 to 0.20, and a thickness of the dielectric layer is 0.8 ?m or less.
    Type: Application
    Filed: June 6, 2018
    Publication date: April 4, 2019
    Inventors: Seok Hyun YOON, Jung Deok PARK, Chan Hee NAM, Dong Hun KIM
  • Patent number: 10236125
    Abstract: A dielectric ceramic composition contains: a barium titanate-based powder as a main ingredient; a first accessory ingredient containing Na; a second accessory ingredient containing Ba; and a third accessory ingredient containing Si. A content of the first accessory ingredient (based on moles of Na) is 0.3 to 4.0 moles per 100 moles of the main ingredient, and a Ba/Si ratio is in a range of 0.16 to 1.44.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: March 19, 2019
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun Yoon, Jung Deok Park, Chang Hak Choi, Dong Hun Kim, Seung Ho Lee, Chan Hee Nam
  • Patent number: 9959976
    Abstract: A multilayer ceramic capacitor includes a ceramic body including dielectric layers and first and second internal electrodes disposed to face each other with respective dielectric layers interposed therebetween; and first and second external electrodes disposed on outer surfaces of the ceramic body, wherein the dielectric layer contains zirconium (Zr), a Zr content is 2×Zr/(Ba+Ca+Ti+Zr) based on an atomic ratio, a first crystal grain is composed of a core part having a Zr content of 3.0 at % or less and a shell part having a Zr content of 4.0 to 15.0 at %, and a number fraction of the first crystal grain to all crystal grains in the dielectric layer is 4% or more.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: May 1, 2018
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun Yoon, Dong Hun Kim, Jung Deok Park, Chan Hee Nam, Jung Wook Seo
  • Patent number: 9928959
    Abstract: A dielectric ceramic composition and a multilayer ceramic capacitor containing the same are provided. The dielectric ceramic composition contains a base material powder represented by (1?x)BaTiO3?xPbTiO3 containing a first main ingredient represented by BaTiO3 and a second main ingredient represented by PbTiO3, wherein x satisfies 0.0025?x?0.4. The multilayer ceramic capacitor includes a ceramic body in which dielectric layers containing the dielectric ceramic composition are alternately stacked with first and second internal electrodes, and first and second external electrodes formed on both end portions of the ceramic body and respectively electrically connected to the first and second internal electrodes.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: March 27, 2018
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun Yoon, Sung Kwon Wi, Jung Deok Park, Jung Wook Seo, Chan Hee Nam, Dong Hun Kim
  • Publication number: 20180033555
    Abstract: A dielectric ceramic composition contains: a barium titanate-based powder as a main ingredient; a first accessory ingredient containing Na; a second accessory ingredient containing Ba; and a third accessory ingredient containing Si. A content of the first accessory ingredient (based on moles of Na) is 0.3 to 4.0 moles per 100 moles of the main ingredient, and a Ba/Si ratio is in a range of 0.16 to 1.44.
    Type: Application
    Filed: April 4, 2017
    Publication date: February 1, 2018
    Inventors: Seok Hyun YOON, Jung Deok PARK, Chang Hak CHOI, Dong Hun KIM, Seung Ho LEE, Chan Hee NAM
  • Publication number: 20170271082
    Abstract: A multilayer ceramic capacitor includes a ceramic body including dielectric layers and first and second internal electrodes disposed to face each other with respective dielectric layers interposed therebetween; and first and second external electrodes disposed on outer surfaces of the ceramic body, wherein the dielectric layer contains zirconium (Zr), a Zr content is 2×Zr/(Ba+Ca+Ti+Zr) based on an atomic ratio, a first crystal grain is composed of a core part having a Zr content of 3.0 at % or less and a shell part having a Zr content of 4.0 to 15.0 at %, and a number fraction of the first crystal grain to all crystal grains in the dielectric layer is 4% or more.
    Type: Application
    Filed: September 27, 2016
    Publication date: September 21, 2017
    Inventors: Seok Hyun YOON, Dong Hun KIM, Jung Deok PARK, Chan Hee NAM, Jung Wook SEO
  • Patent number: 9666369
    Abstract: There are provided a dielectric ceramic composition and a multilayer ceramic capacitor containing the same. The dielectric ceramic composition according to the present disclosure may contain a main base material ingredient and a first accessory ingredient, wherein the first accessory ingredient contains samarium (Sm) and other rare earth (RE) elements, and a ratio (a/b) of a content (a) of samarium (Sm) to a content (b) of other rare earth elements in the first accessory ingredient satisfies 0.1?a/b?2.0.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: May 30, 2017
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Sung Park, Chan Hee Nam, Doo Young Kim, Seok Hyun Yoon, Du Won Choi, Chang Hoon Kim
  • Publication number: 20170011851
    Abstract: A dielectric ceramic composition and a multilayer ceramic capacitor containing the same are provided. The dielectric ceramic composition contains a base material powder represented by (1?x)BaTiO3?xPbTiO3 containing a first main ingredient represented by BaTiO3 and a second main ingredient represented by PbTiO3, wherein x satisfies 0.0025?x?0.4. The multilayer ceramic capacitor includes a ceramic body in which dielectric layers containing the dielectric ceramic composition are alternately stacked with first and second internal electrodes, and first and second external electrodes formed on both end portions of the ceramic body and respectively electrically connected to the first and second internal electrodes.
    Type: Application
    Filed: March 9, 2016
    Publication date: January 12, 2017
    Inventors: Seok Hyun YOON, Sung Kwon WI, Jung Deok PARK, Jung Wook SEO, Chan Hee NAM, Dong Hun KIM
  • Publication number: 20160307701
    Abstract: There are provided a dielectric ceramic composition and a multilayer ceramic capacitor containing the same. The dielectric ceramic composition according to the present disclosure may contain a main base material ingredient and a first accessory ingredient, wherein the first accessory ingredient contains samarium (Sm) and other rare earth (RE) elements, and a ratio (a/b) of a content (a) of samarium (Sm) to a content (b) of other rare earth elements in the first accessory ingredient satisfies 0.1?a/b?2.0.
    Type: Application
    Filed: February 10, 2016
    Publication date: October 20, 2016
    Inventors: Jae Sung PARK, Chan Hee NAM, Doo Young KIM, Seok Hyun YOON, Du Won CHOI, Chang Hoon KIM