Patents by Inventor Chang Hyun Yoo

Chang Hyun Yoo 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: 12297163
    Abstract: Disclosed are a glycerol derivative that is useful for improving, preventing or treating inflammation-related diseases by inhibiting overexpression of various inflammatory cytokines such as IL-4, IL-6 and so on, or chemokine CXCL8 and reducing migration of HL-60 cell lines, preparation method therefor, and an immunomodulator containing the same as active ingredient. It includes a glycerol derivative represented by Chemical formula 2 or 3 in the specification.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: May 13, 2025
    Assignee: ENZYCHEM LIFESCIENCES CORPORATION
    Inventors: Ki Young Sohn, Jae Wha Kim, Sun Young Yoon, Chang Hyun Yoo, Jin Seon Jeong
  • Publication number: 20250095020
    Abstract: The present invention relates to a system and method for obtaining and safely storing users' personal data, appropriately providing the stored personal data to companies requiring the personal data, and providing rewards to the users for providing the personal data, wherein, by storing personal data on a blockchain and allowing a user whose identity has been authenticated through a DID method to grant a company member access authority to his or her personal data, the company member may obtain personal data and use the personal data for marketing.
    Type: Application
    Filed: May 26, 2022
    Publication date: March 20, 2025
    Applicant: SALTMINE, INC.
    Inventor: Chang Hyun YOO
  • Patent number: 12187672
    Abstract: Disclosed are a novel 1,2-diacylglycerol compound that useful for improving, preventing or treating inflammation-related diseases by inhibiting overexpression of various inflammatory cytokines such as IL-4 and IL-6 or chemokine CXCL8 related to the migration of inflammatory cells, a method for preparing the same, and an immunomodulator containing the same as an active ingredient. The 1,2-diacylglycerol compound is represented by Chemical Formula 2 in the patent specification.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: January 7, 2025
    Assignee: ENZYCHEM LIFESCIENCES CORPORATION
    Inventors: Ki Young Sohn, Jae Wha Kim, Sun Young Yoon, Chang Hyun Yoo, Jin Seon Jeong
  • Publication number: 20210198183
    Abstract: Disclosed are a glycerol derivative that is useful for improving, preventing or treating inflammation-related diseases by inhibiting overexpression of various inflammatory cytokines such as IL-4, IL-6 and so on, or chemokine CXCL8 and reducing migration of HL-60 cell lines, preparation method therefor, and an immunomodulator containing the same as active ingredient. It includes a glycerol derivative represented by Chemical formula 2 or 3 in the specification.
    Type: Application
    Filed: April 19, 2019
    Publication date: July 1, 2021
    Applicant: Enzychem Lifesciences Corporation
    Inventors: Ki Young SOHN, Jae Wha KIM, Sun Young YOON, Chang Hyun YOO, Jin Seon JEONG
  • Publication number: 20210002197
    Abstract: Disclosed are a novel 1,2-diacylglycerol compound that useful for improving, preventing or treating inflammation-related diseases by inhibiting overexpression of various inflammatory cytokines such as IL-4 and IL-6 or chemokine CXCL8 related to the migration of inflammatory cells, a method for preparing the same, and an immunomodulator containing the same as an active ingredient. The 1,2-diacylglycerol compound is represented by Chemical Formula 2 in the patent specification.
    Type: Application
    Filed: March 25, 2019
    Publication date: January 7, 2021
    Inventors: Ki Young SOHN, Jae Wha KIM, Sun Young YOON, Chang Hyun YOO, Jin Seon JEONG
  • Publication number: 20210002242
    Abstract: Disclosed are a novel diacylglycerol lactone compound for improving immunity and inhibiting infection by promoting neutrophil movement, a preparation method therefor, and an immunostimulator containing same as an active ingredient. The diacyloglycerol lactone compound is represented by chemical formula 1 of the specification. In chemical formula 1, R1 and R2 are respectively N and independently a C2-30 fatty acid group.
    Type: Application
    Filed: March 8, 2019
    Publication date: January 7, 2021
    Inventors: Ki Young SOHN, Jae Wha KIM, Sun Young YOON, Chang Hyun YOO, Jin Seon JEONG
  • Patent number: 9701613
    Abstract: Disclosed are a method for preparing 1-palmitoyl-3-acetylglycerol in high purity and high yield without a purification process using a column chromatography, and a method for preparing 1-palmitoyl-2-linoleoyl-3-acetylglycerol in high purity and high yield using the same as a key intermediate. The method for preparing 1-palmitoyl-3-acetyl glycerol comprises the steps of: forming a reaction mixture including 1-palmitoyl-3-acetyl glycerol of the Formula 1 in the specification by reacting 1-palmitoylglycerol of the Formula 2 in the specification and an acetylating agent; and separating the optically active 1-palmitoyl-3-acetylglycerol by crystallizing the reaction mixture in a saturated hydrocarbon solvent having 5 to 7 carbon atoms.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: July 11, 2017
    Assignee: ENZYCHEM LIFESCIENCES CORPORATION
    Inventors: Tae-Suk Lee, Jin-Soo Yook, Chang-Hyun Yoo, Cheol-Min Lee, Eun-Kyung Kim, Ju-Cheol Lee
  • Publication number: 20170183287
    Abstract: Disclosed are a method for preparing 1-palmitoyl-3-acetylglycerol in high purity and high yield without a purification process using a column chromatography, and a method for preparing 1-palmitoyl-2-linoleoyl-3-acetylglycerol in high purity and high yield using the same as a key intermediate,. The method for preparing 1-palmitoyl-3-acetyl glycerol comprises the steps of: forming a reaction mixture including 1-palmitoyl-3-acetyl glycerol of the Formula 1 in the specification by reacting 1-palmitoylglycerol of the Formula 2 in the specification and an acetylating agent; and separating the optically active 1-palmitoyl-3-acetylglycerol by crystallizing the reaction mixture in a saturated hydrocarbon solvent having 5 to 7 carbon atoms.
    Type: Application
    Filed: March 3, 2017
    Publication date: June 29, 2017
    Inventors: Tae-Suk LEE, Jin-Soo YOOK, Chang-Hyun YOO, Cheol-Min LEE, Eun-Kyung KIM, Ju-Cheol LEE
  • Patent number: 9469205
    Abstract: A female connector of a high voltage junction box includes a first case and a second case that are coupled to form a space for accommodation of electric wiring, a connector housing configured as a pipe at one side of the first case and having an internal opening portion that is closed via coupling with a holder formed in the second case, and a bus bar extending from the electric wiring, inserted into the connector housing, and fixed to the connector housing by the holder. A method for assembling the female connector includes holding electric wiring on a first case to insert a bus bar formed on the electric wiring into a connector housing formed on the first case for connection with external wiring; coupling the first case and the second case to fix the bus bar; and forming a space for accommodation of the electric wiring.
    Type: Grant
    Filed: June 28, 2015
    Date of Patent: October 18, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Korea Electric Terminal Co., Ltd.
    Inventors: Beom Joo Kwon, Myeong Sun Choi, Chang Hyun Yoo
  • Publication number: 20160089993
    Abstract: A female connector of a high voltage junction box includes a first case and a second case that are coupled to form a space for accommodation of electric wiring, a connector housing configured as a pipe at one side of the first case and having an internal opening portion that is closed via coupling with a holder formed in the second case, and a bus bar extending from the electric wiring, inserted into the connector housing, and fixed to the connector housing by the holder. A method for assembling the female connector includes holding electric wiring on a first case to insert a bus bar formed on the electric wiring into a connector housing formed on the first case for connection with external wiring; coupling the first case and the second case to fix the bus bar; and forming a space for accommodation of the electric wiring.
    Type: Application
    Filed: June 28, 2015
    Publication date: March 31, 2016
    Inventors: Beom Joo Kwon, Myeong Sun Choi, Chang Hyun Yoo
  • Publication number: 20160083329
    Abstract: Disclosed are a method for preparing 1-palmitoyl-3-acetylglycerol in high purity and high yield without a purification process using a column chromatography, and a method for preparing 1-palmitoyl-2-linoleoyl-3-acetylglycerol in high purity and high yield using the same as a key intermediate. The method for preparing 1-palmitoyl-3-acetyl glycerol comprises the steps of: forming a reaction mixture including 1-palmitoyl-3-acetyl glycerol of the Formula 1 in the specification by reacting 1-palmitoylglycerol of the Formula 2 in the specification and an acetylating agent; and separating the optically active 1-palmitoyl-3-acetylglycerol by crystallizing the reaction mixture in a saturated hydrocarbon solvent having 5 to 7 carbon atoms.
    Type: Application
    Filed: December 3, 2015
    Publication date: March 24, 2016
    Inventors: Tae-Suk LEE, Jin-Soo YOOK, Chang-Hyun YOO, Cheol-Min LEE, Eun-Kyung KIM, Ju-Cheol LEE
  • Publication number: 20150266803
    Abstract: Disclosed are a method for preparing 1-acyl-3-acetylglycerol in high purity and high yield without a purification process using a column chromatography, and a method for preparing 1,2-diacyl-3-acetylglycerol in high purity and high yield using the same as a key intermediate. The method includes the steps of: forming a reaction mixture including 1-acyl-3-acetyl glycerol of the Formula 1 in the specification by reacting 1-acylglycerol of the Formula 2 in the specification and an acetylating agent; and separating the racemic or optically active 1-acyl-3-acetylglycerol by crystallizing the reaction mixture in a saturated hydrocarbon solvent having 5 to 7 carbon atoms.
    Type: Application
    Filed: August 19, 2014
    Publication date: September 24, 2015
    Inventors: Tae-Suk LEE, Jin-Soo YOOK, Chang-Hyun YOO, Cheol-Min LEE, Eun-Kyung KIM, Ju-Cheol LEE
  • Patent number: 8965686
    Abstract: Disclosed are an apparatus and method for computing a vehicle path by considering satellite communication channel states. The method includes: searching for a plurality of candidate paths, each path connected from a starting point to a destination; analyzing a satellite communication channel state with respect to each of the candidate paths, based on a receiving sensitivity of an electric wave received from a satellite; setting one of the candidate paths as a first path, based on the analyzed satellite communication channel states; and mapping the first path onto a map, and displaying the first path on a display unit.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: February 24, 2015
    Assignee: Agency for Defense Development
    Inventors: Ki Min Hwang, Jong Wan Heo, Kun Sup Kwon, Chang Hyun Yoo
  • Publication number: 20140336923
    Abstract: Disclosed are an apparatus and method for computing a vehicle path by considering satellite communication channel states. The method includes: searching for a plurality of candidate paths, each path connected from a starting point to a destination; analyzing a satellite communication channel state with respect to each of the candidate paths, based on a receiving sensitivity of an electric wave received from a satellite; setting one of the candidate paths as a first path, based on the analyzed satellite communication channel states; and mapping the first path onto a map, and displaying the first path on a display unit.
    Type: Application
    Filed: November 12, 2013
    Publication date: November 13, 2014
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Ki Min HWANG, Jong Wan HEO, Kun Sup KWON, Chang Hyun YOO
  • Publication number: 20140243548
    Abstract: Disclosed are a method for preparing 1-palmitoyl-3-acetylglycerol in high purity and high yield without a purification process using a column chromatography, and a method for preparing 1-palmitoyl-2-linoleoyl-3-acetylglycerol in high purity and high yield using the same as a key intermediate. The method for preparing 1-palmitoyl-3-acetyl glycerol comprises the steps of: forming a reaction mixture including 1-palmitoyl-3-acetyl glycerol of the Formula 1 in the specification by reacting 1-palmitoylglycerol of the Formula 2 in the specification and an acetylating agent; and separating the optically active 1-palmitoyl-3-acetylglycerol by crystallizing the reaction mixture in a saturated hydrocarbon solvent having 5 to 7 carbon atoms.
    Type: Application
    Filed: September 24, 2012
    Publication date: August 28, 2014
    Inventors: Tae-Suk Lee, Jin-Soo Yook, Chang-Hyun Yoo, Cheol-Min Lee, Eun-Kyung Kim, Ju-Cheol Lee
  • Patent number: 7868196
    Abstract: Disclosed is a process for the regioselective preparation of glycerol derivative in a high efficiency and yield. The process for the regioselective preparation of 1-R1-2-R2-3-acetyl-glycerol derivative comprises the steps of: obtaining 1-R1-3-protecting group-glycerol by introducing a protecting group to 3-position of 1-R1-glycerol; obtaining 1-R1-2-R2-3-protecting group-glycerol by introducing R2 group into 2-position of 1-R1-3-protecting group-glycerol; and carrying out the deprotection reaction and the acetylation reaction of 1-R1-2-R2-3-protecting group-glycerol at the same time. Wherein, R1 and R2 are fatty acid groups having 16 to 22 carbon atoms, and are different from each other; and the protecting group is trityl group or trialkylsilyl group.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: January 11, 2011
    Assignee: Enzychem Co., Ltd.
    Inventors: Tae-Suk Lee, Jin-Soo Yook, Jong-Soo Lee, Chang-Hyun Yoo, Ju-Cheol Lee, Cheol-Min Lee, Wan-Hee Lee
  • Publication number: 20090253923
    Abstract: Disclosed is a process for the regioselective preparation of glycerol derivative in a high efficiency and yield. The process for the regioselective preparation of 1-R1-2-R2-3-acetyl-glycerol derivative comprises the steps of: obtaining 1-R1-3-protecting group-glycerol by introducing a protecting group to 3-position of 1-R1-glycerol; obtaining 1-R1-2-R2-3-protecting group-glycerol by introducing R2 group into 2-position of 1-R1-3-protecting group-glycerol; and carrying out the deprotection reaction and the acetylation reaction of 1-R1-2-R2-3-protecting group-glycerol at the same time. Wherein, R1 and R2 are fatty acid groups having 16 to 22 carbon atoms, and are different from each other; and the protecting group is trityl group or trialkylsilyl group.
    Type: Application
    Filed: July 18, 2006
    Publication date: October 8, 2009
    Inventors: Tae-Suk Lee, Jin-Soo Yook, Jong-Soo Lee, Chang-Hyun Yoo, Ju-Cheol Lee, Cheol-Min Lee, Wan-Hee Lee
  • Patent number: 6759830
    Abstract: The invention provides a method of precisely estimating the effective full-discharge capacity of a secondary battery. That effective full-discharge capacity degrades as the secondary battery is repeatedly charged and discharged.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: July 6, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Chang-hyun Yoo
  • Patent number: 6600025
    Abstract: An erythromycin A 9-O-benzodithiol oxime intermediate represented by the following formula (III) useful for synthesis of clarthromycin and crystalline solvate thereof: Wherein, Y1 and Y2 are independently a hydrogen atoms or trimethylsilyl groups. And, a process for the preparation of clarithromycin using the erythromycin A 9-O-benzodithiol oxime intermediate as described in the specification.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: July 29, 2003
    Assignees: Chemtech Research Incorporation, Hansol Chemience Co., Ltd.
    Inventors: Tae Suk Lee, Chang Hyun Yoo, Kyoung Soo Kim, Hyun Suk An, Jung Young Kim, Wan Joo Kim
  • Publication number: 20030071599
    Abstract: The invention provides a method of precisely estimating the effective full-discharge capacity of a secondary battery. That effective full-discharge capacity degrades as the secondary battery is repeatedly charged and discharged.
    Type: Application
    Filed: October 11, 2002
    Publication date: April 17, 2003
    Applicant: Samsung SDI Co., Ltd.
    Inventor: Chang-Hyun Yoo