Patents by Inventor Eun-Jung Choi

Eun-Jung 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: 20250115888
    Abstract: The present disclosure relates to a modified polypeptide having xylanase activity and use thereof.
    Type: Application
    Filed: August 3, 2022
    Publication date: April 10, 2025
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Surin LEE, Byung-sam SON, Jihyun SHIM, Eun Jung CHOI
  • Patent number: 12264346
    Abstract: Disclosed is a modified polypeptide having mannanase activity and a use thereof.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: April 1, 2025
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Byung-sam Son, Hyun Kug Cho, Eun Jung Choi
  • Publication number: 20240376458
    Abstract: Disclosed is a modified polypeptide having mannanase activity and a use thereof.
    Type: Application
    Filed: July 25, 2022
    Publication date: November 14, 2024
    Inventors: Byung-sam SON, Hyun Kug CHO, Eun Jung CHOI
  • Publication number: 20240380390
    Abstract: A clock generation circuit includes a reference voltage generator configured to generate a first current having a current value inversely proportional to a reference voltage and a temperature, a bias circuit configured to generate a bias current, a second current having a current value proportional to the temperature, and a third current based on the reference voltage, a voltage generator configured to generate a supply voltage based on the first current, the bias current, and the second current, and an oscillation circuit configured to generate a clock signal having a constant frequency based on the supply voltage and the third current, wherein the supply voltage is generated to have a slope based on a ratio of the first current to the second current.
    Type: Application
    Filed: December 19, 2023
    Publication date: November 14, 2024
    Applicant: SK hynix Inc.
    Inventor: Eun Jung CHOI
  • Patent number: 12098401
    Abstract: The present disclosure relates to a fructose-C4-epimerase and a method of preparing tagatose using the same.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: September 24, 2024
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Young Mi Lee, Il Hyang Park, Seong Bo Kim, Seung Won Park, Eun Jung Choi
  • Patent number: 12053005
    Abstract: The present disclosure relates to a method for preparing a transglucosylated steviol glycoside using a crude enzyme liquid of a Lactobacillus mali strain.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: August 6, 2024
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Tae Joo Yang, Young Mi Lee, In Sung Kang, Sunghee Park, Young Su Lee, Sun Chu, Seong Bo Kim, Eun Jung Choi
  • Patent number: 12006429
    Abstract: The present invention provides a thermoplastic resin composition which includes: a first copolymer including a core including a conjugated diene-based polymer and a shell including an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit; and a second copolymer including an aromatic vinyl-based monomer unit and a vinyl cyan-based monomer unit, wherein the first copolymer has a degree of grafting of 32 to 50%, the second copolymer has a weight-average molecular weight of 85,000 to 115,000 g/mol, and the thermoplastic resin composition includes the first copolymer at 30 wt % or less and an oligomer residue at 1.1 wt % or less. Specifically, the thermoplastic resin composition can shorten an injection molding time.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: June 11, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Seo Hwa Kim, Byoung Il Kang, Eun Jung Choi, Taek Jun Jung, Jeong In Cho, Dong Kun Shin
  • Publication number: 20240110170
    Abstract: The present disclosure relates to a modified polypeptide having xylanase activity and the use thereof.
    Type: Application
    Filed: December 15, 2021
    Publication date: April 4, 2024
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Tae Joo YANG, Jihyun SHIM, Eun Jung CHOI, Byung-sam SON, Jae Yong PARK
  • Publication number: 20240082240
    Abstract: A composition for preventing and/or treating cytokine release syndrome and a method of prevention and/or treatment of cytokine release syndrome are disclosed. The composition includes an aryl ethene compound, a pharmaceutically acceptable salt thereof, or a solvate thereof, as an active ingredient. The method includes administering the aryl ethene compound, an isomer, a pharmaceutically acceptable salt thereof, or a solvate thereof, in an effective amount to a subject in need thereof. The cytokine release syndrome may be caused by virulent infection. The administration of the compound reduces the pre-inflammatory cytokine levels in the subject.
    Type: Application
    Filed: October 31, 2023
    Publication date: March 14, 2024
    Applicant: NOVMETAPHARMA CO, LTD.
    Inventors: In-Kyu LEE, Jae-Han JEON, Dipanjan CHANDA, Eun Jung CHOI, Hoe Yune JUNG, Heon Jong LEE
  • Publication number: 20240035054
    Abstract: The present disclosure relates to a modified polypeptide having xylanase activity and the use thereof.
    Type: Application
    Filed: December 15, 2021
    Publication date: February 1, 2024
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Tae Joo YANG, Jihyun SHIM, Eun Jung CHOI, Byung-sam SON, Jae Yong PARK
  • Patent number: 11884923
    Abstract: Provided are a fructose-4-epimerase variant having tagatose conversion activity, and a method of preparing tagatose using the same.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: January 30, 2024
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Young Mi Lee, Eul-Soo Park, Il Hyang Park, Sun Mi Shin, Sung Jae Yang, Ran Young Yoon, Eun Jung Choi, Seong Bo Kim, Seung Won Park
  • Patent number: 11872228
    Abstract: The present disclosure is a pharmaceutical composition for the prevention or treatment of sepsis containing a thiamine derivative or a pharmaceutically acceptable salt thereof, wherein the pharmaceutical composition of the present disclosure can be used for the prevention, alleviation, or treatment of sepsis by containing fursultiamine or allithiamine to inhibit the expressions of CD40, CD86, and TNF?.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: January 16, 2024
    Assignees: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, KYUNGPOOK NATIONAL UNIVERSITY HOSPITAL
    Inventors: In Kyu Lee, Eun Jung Choi, Chang Hyun Jeon, Tae-Hwan Kwon, Dong Ho Park
  • Patent number: 11850246
    Abstract: A composition for preventing and/or treating cytokine release syndrome and a method of prevention and/or treatment of cytokine release syndrome are disclosed. The composition includes an aryl ethene compound, a pharmaceutically acceptable salt thereof, or a solvate thereof, as an active ingredient. The method includes administering the aryl ethene compound, an isomer, a pharmaceutically acceptable salt thereof, or a solvate thereof, in an effective amount to a subject in need thereof. The cytokine release syndrome may be caused by virulent infection. The administration of the compound reduces the pre-inflammatory cytokine levels in the subject.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: December 26, 2023
    Assignee: NOVMETAPHARMA CO., LTD.
    Inventors: In-Kyu Lee, Jae-Han Jeon, Dipanjan Chanda, Eun Jung Choi, Hoe-Yune Jung, Heon Jong Lee
  • Publication number: 20230365276
    Abstract: A method of determining a precise orbit of a satellite through estimation of a parallactic refraction scale factor is proposed, the method includes inputting an initial estimate including initial orbit information of a satellite with respect to an observation epoch and the parallactic refraction scale factor; performing orbit propagation using a high-precision orbit propagator by applying a dynamics model; performing observer-centered satellite optical observation modeling including the parallactic refraction scale factor; calculating an observation residual between actual optical observation data and observation data calculated via the observation modeling reflecting the parallactic refraction; and precisely determining the orbit of the satellite by estimating the parallactic refraction scale factor and a satellite state vector using a batch least square estimation algorithm.
    Type: Application
    Filed: July 12, 2023
    Publication date: November 16, 2023
    Applicant: KOREA ASTRONOMY AND SPACE SCIENCE INSTITUTE
    Inventor: Eun Jung CHOI
  • Publication number: 20230348117
    Abstract: A method for re-entry prediction of an uncontrolled artificial space object includes: calculating an average semi-major axis and an argument of latitude by inputting two-line elements or osculating elements of an artificial space object at two different time points; calculating an average semi-major axis, argument of latitude, and atmospheric drag at a second time point; estimating an optimum drag scale factor while changing the drag scale factor; predicting the time and place of re-entry of an artificial space object into the atmosphere by applying the estimated drag scale factor. Here, orbit prediction is performed by using a Cowell's high-precision orbital propagator using numerical integration from the second time point to a re-entry time point.
    Type: Application
    Filed: July 11, 2023
    Publication date: November 2, 2023
    Applicant: KOREA ASTRONOMY AND SPACE SCIENCE INSTITUTE
    Inventor: Eun Jung CHOI
  • Publication number: 20230310430
    Abstract: The present invention relates to a pharmaceutical composition for preventing, treating, or ameliorating graft versus host disease (GVHD), comprising thiamine derivatives, in which the active ingredient of the pharmaceutical composition is fursultiamine, which can alleviate weight loss found in patients with GVHD, reduce the infiltration of liver and colon inflammatory cells, and effectively inhibit the production of allogeneic CD4+ IFN?+ T cells, and thus can be effectively used for the prevention, treatment, or amelioration of GVHD.
    Type: Application
    Filed: September 15, 2021
    Publication date: October 5, 2023
    Inventors: In-Kyu LEE, Eun Jung CHOI, Chang Hyun JEON, Jae-Han JEON
  • Patent number: 11753646
    Abstract: Provided are a tagatose-bisphosphate aldolase variant having tagatose conversion activity, and a method of preparing tagatose using the same.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: September 12, 2023
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Young Mi Lee, Eul-Soo Park, Il Hyang Park, Sun Mi Shin, Sung Jae Yang, Ran Young Yoon, Eun Jung Choi, Seong Bo Kim, Seung Won Park
  • Patent number: 11697832
    Abstract: Provided are a novel fructose-C4-epimerase and a method of producing tagatose using the same.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: July 11, 2023
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Young Mi Lee, Il Hyang Park, Seong Bo Kim, Seung Won Park, Eun Jung Choi
  • Publication number: 20230174768
    Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article including the same. Also disclosed is a thermoplastic resin composition including a base resin including a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer, an alkyl acrylate rubber-vinyl cyanide compound-aromatic vinyl compound graft copolymer, and an aromatic vinyl compound-vinyl cyanide compound copolymer and a polysiloxane in a predetermined composition ratio, wherein the alkyl acrylate rubber-vinyl cyanide compound-aromatic vinyl compound graft copolymer has a grafting degree of 42% or more and is included in an amount of 0.1 to 10% by weight based on 100% by weight in total of the base resin.
    Type: Application
    Filed: October 26, 2021
    Publication date: June 8, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Seo Hwa KIM, Byoung Il KANG, Dong Kun SHIN, Eun Jung CHOI, Yeongmin KIM
  • Publication number: 20230041854
    Abstract: The present disclosure relates to a composition for tagatose production and a method for preparing tagatose using the same.
    Type: Application
    Filed: January 20, 2021
    Publication date: February 9, 2023
    Inventors: Young Mi LEE, Seong Bo KIM, Eun Jung CHOI, Ki Jun JEONG, Eunjung JEON, Min Soo CHO