Patents by Inventor Chang Yong Choi

Chang Yong 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: 11410814
    Abstract: A multilayer electronic component includes a body comprising a capacitance-forming portion including a dielectric layer and a plurality of internal electrodes layered with the dielectric layer interposed therebetween, and upper and lower cover portions disposed on upper and lower surfaces of the capacitance-forming portion, respectively; and external electrodes disposed on the body and electrically connected to at least some of the plurality of internal electrodes, respectively, wherein at least one of the upper cover portion and or the lower cover portion has a step structure, and the step structure has a shorter length and width as compared to the capacitance-forming portion.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: August 9, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seul Gi Kim, Jin Sung Chun, Chang Yong Choi
  • Publication number: 20220076888
    Abstract: A multilayer electronic component includes a body comprising a capacitance-forming portion including a dielectric layer and a plurality of internal electrodes layered with the dielectric layer interposed therebetween, and upper and lower cover portions disposed on upper and lower surfaces of the capacitance-forming portion, respectively; and external electrodes disposed on the body and electrically connected to at least some of the plurality of internal electrodes, respectively, wherein at least one of the upper cover portion and or the lower cover portion has a step structure, and the step structure has a shorter length and width as compared to the capacitance-forming portion.
    Type: Application
    Filed: February 16, 2021
    Publication date: March 10, 2022
    Inventors: Seul Gi KIM, Jin Sung CHUN, Chang Yong CHOI
  • Publication number: 20210027261
    Abstract: The present inventive concept relates to a system for operating a region-originating development platform, comprising: a service server for coordinating a regional service between a physical card and a mobile terminal of a user, one or more regional member stores, and a regional integration server; and an operation management portal running on the service server, comprising a system portal part used to operate a system within the service server, a platform portal part for managing one or more merchandises offered as the regional service, and a partner portal part for managing partners including member stores, where the regional integration server comprises sub-institution servers in a layered structure to operate in conjunction with one or more base center servers at a lower level, and the mobile terminal runs a service application for providing the regional service and comprises information of at least one mobile card issued upon a request.
    Type: Application
    Filed: July 25, 2019
    Publication date: January 28, 2021
    Applicants: Incheon Metropolitan City, KONA I CO., LTD.
    Inventors: Kwang Ho AN, In Pyo HONG, Dong Hoon BYUN, Sang Joong KIM, Chang Yong CHOI
  • Patent number: 10251051
    Abstract: A method for providing a multi number service using a universal integrated circuit card (UICC) comprises the steps of: according to a command received from the outside of a UICC, selecting any one subscriber identification information set among a plurality of subscriber identification information sets stored in a memory allocated to a subscriber identification information set managing application; and activating the selected subscriber identification information set.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: April 2, 2019
    Assignee: KONA I CO., LTD
    Inventors: Chung Il Cho, Sung Hwan Kim, Young Min Son, Chang Yong Choi, Joo Yeol Oh, Hyun Sung Hong
  • Patent number: 10136307
    Abstract: A method for providing a multi number service using a universal integrated circuit card (UICC) comprises the steps of: according to a command received from the outside of a UICC, selecting any one subscriber identification information set among a plurality of subscriber identification information sets stored in a memory allocated to a subscriber identification information set managing application; and activating the selected subscriber identification information set.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: November 20, 2018
    Assignee: KONA I CO., LTD
    Inventors: Chung Il Cho, Sung Hwan Kim, Young Min Son, Chang Yong Choi, Joo Yeol Oh, Hyun Sung Hong
  • Publication number: 20180077562
    Abstract: A method for providing a multi number service using a universal integrated circuit card (UICC) comprises the steps of: according to a command received from the outside of a UICC, selecting any one subscriber identification information set among a plurality of subscriber identification information sets stored in a memory allocated to a subscriber identification information set managing application; and activating the selected subscriber identification information set.
    Type: Application
    Filed: October 26, 2017
    Publication date: March 15, 2018
    Inventors: Chung Il Cho, Sung Hwan Kim, Young Min Son, Chang Yong Choi, Joo Yeol Oh, Hyun Sung Hong
  • Publication number: 20180049021
    Abstract: A method for providing a multi number service using a universal integrated circuit card (UICC) comprises the steps of: according to a command received from the outside of a UICC, selecting any one subscriber identification information set among a plurality of subscriber identification information sets stored in a memory allocated to a subscriber identification information set managing application; and activating the selected subscriber identification information set.
    Type: Application
    Filed: October 26, 2017
    Publication date: February 15, 2018
    Inventors: Chung Il Cho, Sung Hwan Kim, Young Min Son, Chang Yong Choi, Joo Yeol Oh, Hyun Sung Hong
  • Patent number: 9865677
    Abstract: Provided is a super junction semiconductor device. The super junction semiconductor device includes a vertical pillar region located in an active region and horizontal pillar regions located in a termination region that are connected with each other while simultaneously not floating the entire pillar region in the termination region. Thus, a charge compensation difference, generated among pillar regions, is caused to be offset, although the length of the termination region is relatively short.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: January 9, 2018
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Hyuk Woo, Dae Byung Kim, Chang Yong Choi, Ki Tae Kang, Kwang Yeon Jun, Moon Soo Cho, Soon Tak Kwon
  • Patent number: 9832634
    Abstract: A method for providing a multi number service using a universal integrated circuit card (UICC) comprises the steps of: according to a command received from the outside of a UICC, selecting any one subscriber identification information set among a plurality of subscriber identification information sets stored in a memory allocated to a subscriber identification information set managing application; and activating the selected subscriber identification information set.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: November 28, 2017
    Assignee: KONA I CO., LTD.
    Inventors: Chung Il Cho, Sung Hwan Kim, Young Min Son, Chang Yong Choi
  • Patent number: 9496335
    Abstract: There is provided a super junction semiconductor device and a method of manufacturing the same. A super junction semiconductor device includes an n-type semiconductor region disposed in a substrate, two or more p-type semiconductor regions disposed adjacent to the n-type semiconductor region alternately in a direction parallel to a surface of the substrate, a p-type body region disposed on at least one of the p-type semiconductor regions, and a source region disposed in the p-type body region, and an n-type ion implantation region is formed along a lower end of the n-type semiconductor region and lower ends of the p-type semiconductor regions.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: November 15, 2016
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Kwang Yeon Jun, Chang Yong Choi, Hyuk Woo, Moon Soo Cho, Soon Tak Kwon
  • Patent number: 9472614
    Abstract: There is provided a super junction semiconductor device. The super junction semiconductor device includes a cell area and a junction termination area disposed on a substrate, and a transition area disposed between the cell area and the junction termination area, and the cell area, the junction termination area, and the transition area each include one or more unit cells comprising a N-type pillar region and a P-type pillar region among a plurality of N-type pillar regions and a P-type pillar regions that are alternated between the cell area and the junction termination area.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: October 18, 2016
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Moon Soo Cho, Chang Yong Choi, Soon Tak Kwon, Kwang Yeon Jun, Dae Byung Kim, Hyuk Woo
  • Publication number: 20160035825
    Abstract: There is provided a super junction semiconductor device and a method of manufacturing the same. A super junction semiconductor device includes an n-type semiconductor region disposed in a substrate, two or more p-type semiconductor regions disposed adjacent to the n-type semiconductor region alternately in a direction parallel to a surface of the substrate, a p-type body region disposed on at least one of the p-type semiconductor regions, and a source region disposed in the p-type body region, and an n-type ion implantation region is formed along a lower end of the n-type semiconductor region and lower ends of the p-type semiconductor regions.
    Type: Application
    Filed: October 14, 2015
    Publication date: February 4, 2016
    Applicant: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Kwang Yeon JUN, Chang Yong CHOI, Hyuk WOO, Moon Soo CHO, Soon Tak KWON
  • Publication number: 20160020273
    Abstract: Provided is a super junction semiconductor device. The super junction semiconductor device includes a vertical pillar region located in an active region and horizontal pillar regions located in a termination region that are connected with each other while simultaneously not floating the entire pillar region in the termination region. Thus, a charge compensation difference, generated among pillar regions, is caused to be offset, although the length of the termination region is relatively short.
    Type: Application
    Filed: July 14, 2015
    Publication date: January 21, 2016
    Applicant: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Hyuk WOO, Dae Byung KIM, Chang Yong CHOI, Ki Tae KANG, Kwang Yeon JUN, Moon Soo CHO, Soon Tak KWON
  • Patent number: 9190469
    Abstract: There is provided a super junction semiconductor device and a method of manufacturing the same. A super junction semiconductor device includes an n-type semiconductor region disposed in a substrate, two or more p-type semiconductor regions disposed adjacent to the n-type semiconductor region alternately in a direction parallel to a surface of the substrate, a p-type body region disposed on at least one of the p-type semiconductor regions, and a source region disposed in the p-type body region, and an n-type ion implantation region is formed along a lower end of the n-type semiconductor region and lower ends of the p-type semiconductor regions.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: November 17, 2015
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Kwang Yeon Jun, Chang Yong Choi, Hyuk Woo, Moon Soo Cho, Soon Tak Kwon
  • Publication number: 20150076600
    Abstract: There is provided a super junction semiconductor device and a method of manufacturing the same. A super junction semiconductor device includes an n-type semiconductor region disposed in a substrate, two or more p-type semiconductor regions disposed adjacent to the n-type semiconductor region alternately in a direction parallel to a surface of the substrate, a p-type body region disposed on at least one of the p-type semiconductor regions, and a source region disposed in the p-type body region, and an n-type ion implantation region is formed along a lower end of the n-type semiconductor region and lower ends of the p-type semiconductor regions.
    Type: Application
    Filed: April 1, 2014
    Publication date: March 19, 2015
    Applicant: MagnaChip Semiconductor, Ltd.
    Inventors: Kwang Yeon JUN, Chang Yong CHOI, Hyuk WOO, Moon Soo CHO, Soon Tak KWON
  • Publication number: 20150076599
    Abstract: There is provided a super junction semiconductor device. The super junction semiconductor device includes a cell area and a junction termination area disposed on a substrate, and a transition area disposed between the cell area and the junction termination area, and the cell area, the junction termination area, and the transition area each include one or more unit cells comprising a N-type pillar region and a P-type pillar region among a plurality of N-type pillar regions and a P-type pillar regions that are alternated between the cell area and the junction termination area.
    Type: Application
    Filed: March 26, 2014
    Publication date: March 19, 2015
    Applicant: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Moon Soo CHO, Chang Yong CHOI, Soon Tak KWON, Kwang Yeon JUN, Dae Byung KIM, Hyuk WOO
  • Publication number: 20080081612
    Abstract: A method and apparatus for updating a regional reference time of a mobile communication terminal by a regional standard time difference according to a Network Identity and Time Zone (NITZ) information change in an asynchronous transfer mode-based mobile communication system are provided. The method of updating a regional reference time of a mobile communication terminal includes determining whether new regional standard time information is received and calculating, if a regional standard time information is changed, a regional standard time difference, which may have a positive or negative value; and resetting the regional reference time by adding the regional standard time difference to a preset regional reference time.
    Type: Application
    Filed: September 20, 2007
    Publication date: April 3, 2008
    Inventors: Jung Kuk Seo, Sang Jae Bae, Chang Yong Choi, Sung Gi Baek
  • Patent number: 7345165
    Abstract: A method for the preparation of water-soluble chitosan with high purity and biological activity includes steps of: reacting chitosan oligo sugar acid salt, covalently bonded to an organic or inorganic acid, with trialkylamine in phosphate buffered saline followed by addition of an organic solvent to remove acid salt at C-2 position; adding the thus obtained reaction mixture to an inorganic acid to remove trialkylamine salt at C-6 position; and passing the thus obtained free amine chitosan through an activated carbon/ion exchange resin. The free amine chitosan is water-soluble and has a high bioavailability for application to the medicine and food industries.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: March 18, 2008
    Assignee: Jae Woon Nah
    Inventors: Mi Kyeong Jang, Chang Yong Choi, Won Seok Kim, Byeong Gi Kong, Young Il Jeong, Hyun Pil Yang, Ji Tae Jang
  • Publication number: 20040260077
    Abstract: A method for the preparation of water-soluble chitosan with high purity and biological activity includes steps of: reacting chitosan oligo sugar acid salt, covalently bonded to an organic or inorganic acid, with trialkylamine in phosphate buffered saline followed by addition of an organic solvent to remove acid salt at C-2 position; adding the thus obtained reaction mixture to an inorganic acid to remove trialkylamine salt at C-6 position; and passing the thus obtained free amine chitosan through an activated carbon/ion exchange resin. The free amine chitosan is water-soluble and has a high bioavailability for application to the medicine and food industries.
    Type: Application
    Filed: March 12, 2004
    Publication date: December 23, 2004
    Inventors: Mi Kyeong Jang, Chang Yong Choi, Won Seok Kim, Byeong Gi Kong, Young Il Jeong, Hyun Pil Yang, Ji Tae Jang