Patents by Inventor Keun Chang

Keun Chang 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: 11634679
    Abstract: Provided herein is a pipette tip for electroporation including an outer surface, a void located within the outer surface, and a conductor located at least partially on or within the outer surface, in electrical communication with at least a portion of the outer surface and the void. Further provided herein is a pipette tip for electroporation including a body, a connector, and an elongated part. The connector is located at the distal end of the body and further includes at least one connecting post, a connecting part in mechanical communication with the connector, and a conductor located at least partially on or within the connector, wherein the conductor surrounds at least a portion of the connecting post. The elongated part also has a void and is located at the distal end of the connector. The void of the body, connector, and elongated part are in fluid communication.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: April 25, 2023
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Jun-Keun Chang, Keun-Chang Cho, Chan-Il Chung, Neon-Cheol Jung, Seung Gin Huh
  • Patent number: 11395880
    Abstract: A drug delivery device includes a housing, a drug delivery assembly disposed within the housing along a longitudinal axis, and a cap defining a shell. At least one electronic component, a power source, and a switch assembly are at least partially disposed in and coupled to the cap. The switch assembly is movable along a plane orthogonal to the longitudinal axis of the drug delivery assembly to cause the power source to provide power to the electronic component. The device further includes an activation mechanism at least partially disposed in the cap. Upon urging the cap along the longitudinal axis in a direction away from the housing, the activation mechanism engages the switch assembly and causes the switch assembly to move, thereby causing the power source to provide power to the at least one electronic component.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: July 26, 2022
    Assignee: AMGEN INC.
    Inventors: Sung Keun Chang, Harold Dean, IV, Michael Friedman, Gordon Johnston, Neal Johnston
  • Publication number: 20220160245
    Abstract: The present invention relates to a system and a method of determining disease based on a heat map image explainable from an electrocardiogram signal, which determine an electrocardiogram signal as a normal signal and a disease signal by transfer-learning a transfer-learning model through a deep learning network, calculate and visualize a part with a high relevance score to the determination to enable a user to objectively and finally determine the disease and the normal state.
    Type: Application
    Filed: November 25, 2021
    Publication date: May 26, 2022
    Inventors: Keun Chang KWAK, Yeong Hyun BYEON, Chan Uk YEOM, Myung Won LEE
  • Publication number: 20220154128
    Abstract: An electroporation apparatus comprising an elongated hollow member in order to provide a uniform electric field during electroporation, wherein specifically, electroporation is carried out by applying electric pulses through a couple of electrodes from both end parts of the elongated hollow member, after the hollow member is charged with fluid specimen including cells and material which would be injected into the cells.
    Type: Application
    Filed: September 27, 2021
    Publication date: May 19, 2022
    Inventors: Jun-Keun CHANG, Keun-Chang CHO, Chan-II CHUNG, Young-Shik SHIN, Jeong-Ah KIM, Neon-Cheol JUNG
  • Patent number: 11130936
    Abstract: An electroporation apparatus comprising an elongated hollow member in order to provide a uniform electric field during electroporation, wherein specifically, electroporation is carried out by applying electric pulses through a couple of electrodes from both end parts of the elongated hollow member, after the hollow member is charged with fluid specimen including cells and material which would be injected into the cells.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: September 28, 2021
    Assignee: LIFE TECHNOLOGIES HOLDINGS PTE LIMITED
    Inventors: Jun-Keun Chang, Keun-Chang Cho, Chan-Il Chung, Young-Shik Shin, Jeong-Ah Kim, Neon-Cheol Jung
  • Patent number: 10793785
    Abstract: The present invention relates to a hydrocracking catalyst based on hierarchically porous beta-zeolite, a method of preparing the same, and a method of producing bio-jet fuel from triglyceride-containing biomass by use of the hydrocracking catalyst, and includes methods comprising preparing a hydrocracking catalyst by supporting a metallic active component on a hierarchically porous beta-zeolite support, and converting n-paraffins, produced from triglyceride-containing biomass, into bio-jet fuel by hydrocracking in the presence of the prepared hydrocracking catalyst. When the hydrocracking catalyst based on hierarchically porous beta-zeolite is used, the residence time of the reactant and the product in the zeolite crystals may be reduced due to additional mesopores formed in the zeolite, and thus bio-jet fuel may be produced in high yield from n-paraffin feedstock produced from triglyceride-containing biomass.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: October 6, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yong Keun Chang, Minkee Choi, Myoung Yeob Kim
  • Publication number: 20200216483
    Abstract: The present invention relates to an SMB-based fucose separation method and an apparatus therefor and, more particularly, to a method and an apparatus for continuously separating fucose from a microalgae-derived monosaccharide mixture or a multi-component mixture (monosaccharide substances, amino acid substances, and glycerol components) using an SMB process.
    Type: Application
    Filed: April 16, 2018
    Publication date: July 9, 2020
    Inventors: Yong Keun CHANG, Sungyong MUN, Seokbin HONG, Jae-hwan CHOI
  • Publication number: 20200164145
    Abstract: A drug delivery device includes a housing, a drug delivery assembly disposed within the housing along a longitudinal axis, and a cap defining a shell. At least one electronic component, a power source, and a switch assembly are at least partially disposed in and coupled to the cap. The switch assembly is movable along a plane orthogonal to the longitudinal axis of the drug delivery assembly to cause the power source to provide power to the electronic component. The device further includes an activation mechanism at least partially disposed in the cap. Upon urging the cap along the longitudinal axis in a direction away from the housing, the activation mechanism engages the switch assembly and causes the switch assembly to move, thereby causing the power source to provide power to the at least one electronic component.
    Type: Application
    Filed: June 22, 2018
    Publication date: May 28, 2020
    Inventors: Sung Keun Chang, Flarold Dean, IV, Michael Friedman, Gordon Johnston, Neal Johnston
  • Publication number: 20200080042
    Abstract: Provided herein is a pipette tip for electroporation including an outer surface, a void located within the outer surface, and a conductor located at least partially on or within the outer surface, in electrical communication with at least a portion of the outer surface and the void. Further provided herein is a pipette tip for electroporation including a body, a connector, and an elongated part. The connector is located at the distal end of the body and further includes at least one connecting post, a connecting part in mechanical communication with the connector, and a conductor located at least partially on or within the connector, wherein the conductor surrounds at least a portion of the connecting post. The elongated part also has a void and is located at the distal end of the connector. The void of the body, connector, and elongated part are in fluid communication.
    Type: Application
    Filed: September 11, 2019
    Publication date: March 12, 2020
    Inventors: Jun-Keun CHANG, Keun-Chang CHO, Chan-Il CHUNG, Neon-Cheol JUNG, Seung Gin HUH
  • Patent number: 10548515
    Abstract: Disclosed are a method for generating personal identification information using an electrocardiogram and a method for identifying a person using the personal identification information. The methods dramatically increase an identification rate by using two-dimensional image data converted from an electrocardiogram signal as personal identification information, and enable real-time identification by reducing a calculation amount by converting only a single electrocardiogram cycle into the two-dimensional image data.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: February 4, 2020
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION CHOSUN UNIVERSITY
    Inventors: Sung-Bum Pan, Gyu-Ho Choi, Hae-Min Moon, Youn-Tae Kim, Keun-Chang Kwak
  • Patent number: 10450543
    Abstract: Provided herein is a pipette tip for electroporation including an outer surface, a void located within the outer surface, and a conductor located at least partially on or within the outer surface, in electrical communication with at least a portion of the outer surface and the void. Further provided herein is a pipette tip for electroporation including a body, a connector, and an elongated part. The connector is located at the distal end of the body and further includes at least one connecting post, a connecting part in mechanical communication with the connector, and a conductor located at least partially on or within the connector, wherein the conductor surrounds at least a portion of the connecting post. The elongated part also has a void and is located at the distal end of the connector. The void of the body, connector, and elongated part are in fluid communication.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: October 22, 2019
    Assignee: LIFE TECHNOLOGIES CORPORATION
    Inventors: Jun-Keun Chang, Keun-Chang Cho, Chan-Il Chung, Neon-Cheol Jung, Seung Gin Huh
  • Patent number: 10443027
    Abstract: An apparatus for clearing tissue using electrophoresis according to an embodiment of the present invention comprises: a chamber which can contain therein a buffer solution and the biological tissue and has an inlet port and an outlet port for circulating the buffer solution; a support member, located within the chamber, for supporting the biological tissue; and electrodes located within the chamber and formed separately of a first electrode and a second electrode which correspond to each other. With the apparatus, it is possible to minimize the degradation of decomposition efficiency and quickly clear the tissue compared to a conventional apparatus.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: October 15, 2019
    Assignee: LOGOS BIOSYSTEMS, INC.
    Inventors: Keun Chang Cho, Neon Cheol Jung
  • Publication number: 20190136142
    Abstract: The present invention relates to a hydrocracking catalyst based on hierarchically porous beta-zeolite, a method of preparing the same, and a method of producing bio-jet fuel from triglyceride-containing biomass by use of the hydrocracking catalyst, and includes methods comprising preparing a hydrocracking catalyst by supporting a metallic active component on a hierarchically porous beta-zeolite support, and converting n-paraffins, produced from triglyceride-containing biomass, into bio-jet fuel by hydrocracking in the presence of the prepared hydrocracking catalyst. When the hydrocracking catalyst based on hierarchically porous beta-zeolite is used, the residence time of the reactant and the product in the zeolite crystals may be reduced due to additional mesopores formed in the zeolite, and thus bio-jet fuel may be produced in high yield from n-paraffin feedstock produced from triglyceride-containing biomass.
    Type: Application
    Filed: May 24, 2018
    Publication date: May 9, 2019
    Inventors: Yong Keun Chang, Minkee Choi, Myoung Yeob Kim
  • Publication number: 20190040350
    Abstract: An electroporation apparatus comprising an elongated hollow member in order to provide a uniform electric field during electroporation, wherein specifically, electroporation is carried out by applying electric pulses through a couple of electrodes from both end parts of the elongated hollow member, after the hollow member is charged with fluid specimen including cells and material which would be injected into the cells.
    Type: Application
    Filed: January 12, 2018
    Publication date: February 7, 2019
    Inventors: Jun-Keun CHANG, Keun-Chang CHO, Chan-Il CHUNG, Young-Shik SHIN, Jeong-Ah KIM, Neon-Cheol JUNG
  • Publication number: 20180098719
    Abstract: Disclosed are a method for generating personal identification information using an electrocardiogram and a method for identifying a person using the personal identification information. The methods dramatically increase an identification rate by using two-dimensional image data converted from an electrocardiogram signal as personal identification information, and enable real-time identification by reducing a calculation amount by converting only a single electrocardiogram cycle into the two-dimensional image data.
    Type: Application
    Filed: December 27, 2016
    Publication date: April 12, 2018
    Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION CHOSUN UNIVERSITY
    Inventors: Sung-Bum PAN, Gyu-Ho CHOI, Hae-Min MOON, Youn-Tae KIM, Keun-Chang KWAK
  • Patent number: 9890355
    Abstract: An electroporation apparatus comprising an elongated hollow member in order to provide a uniform electric field during electroporation, wherein specifically, electroporation is carried out b applying electric pulses through a couple of electrodes from both end parts of the elongated hollow member, after the hollow member is charged with fluid specimen including cells and material which would be injected into the cells.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: February 13, 2018
    Assignee: Life Technologies Holdings PTE Limited
    Inventors: Jun-Keun Chang, Keun-Chang Cho, Chan-Il Chung, Young-Shik Shin, Jeong-Ah Kim, Neon-Cheol Jung
  • Publication number: 20180035031
    Abstract: A camera module includes lenses, and reflecting parts disposed in front of the lenses and configured to reflect light incident thereto from different directions to the lenses. A reflecting part of the reflecting parts is rotatable, and a stopper configured to limit a rotation range of the reflecting part.
    Type: Application
    Filed: July 10, 2017
    Publication date: February 1, 2018
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jun Ho KWAK, Hun Keun CHANG
  • Patent number: 9691982
    Abstract: A method of manufacturing a thin film transistor is disclosed. In one aspect, the method includes forming an active layer over a substrate and forming a gate insulating layer containing a dopant over the active layer. The method also includes irradiating laser light onto the gate insulating layer such that the dopant of the gate insulating layer diffuses into the active layer.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: June 27, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Jin Park, Myung-Ho Kim, Jun-Hwan Moon, Keun-Chang Lee, Yoon-Jong Cho
  • Publication number: 20170166854
    Abstract: Provided herein is a pipette tip for electroporation including an outer surface, a void located within the outer surface, and a conductor located at least partially on or within the outer surface, in electrical communication with at least a portion of the outer surface and the void. Further provided herein is a pipette tip for electroporation including a body, a connector, and an elongated part. The connector is located at the distal end of the body and further includes at least one connecting post, a connecting part in mechanical communication with the connector, and a conductor located at least partially on or within the connector, wherein the conductor surrounds at least a portion of the connecting post. The elongated part also has a void and is located at the distal end of the connector. The void of the body, connector, and elongated part are in fluid communication.
    Type: Application
    Filed: November 21, 2016
    Publication date: June 15, 2017
    Inventors: Jun-Keun CHANG, Keun-Chang CHO, Chan-Il CHUNG, Neon-Cheol JUNG, Seung Gin HUH
  • Patent number: RE50241
    Abstract: An electroporation apparatus comprising an elongated hollow member in order to provide a uniform electric field during electroporation, wherein specifically, electroporation is carried out by applying electric pulses through a couple of electrodes from both end parts of the elongated hollow member, after the hollow member is charged with fluid specimen including cells and material which would be injected into the cells.
    Type: Grant
    Filed: July 13, 2023
    Date of Patent: December 24, 2024
    Assignee: Life Technologies Holdings PTE Ltd.
    Inventors: Jun-Keun Chang, Keun-Chang Cho, Chan-Il Chung, Young-Shik Shin, Jeong-Ah Kim, Neon-Cheol Jung