Patents by Inventor Min-Hwan Jung

Min-Hwan Jung 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: 12050211
    Abstract: The present invention relates to a device and a method for evaluating performance of a deodorant using a superabsorbent polymer (SAP), and the device and method are capable of quantitatively evaluating deodorant performance by collecting ammonia adsorbed to deodorant materials including the SAP and measuring the amount of ammonia thereof.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: July 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Jihyang Son, Min Hwan Jung, Jin Woo Lee
  • Patent number: 12031116
    Abstract: The gas collection device includes a constant temperature chamber whose interior is maintained at a set temperature; a culture flask unit located inside the constant temperature chamber and culturing bacteria therein; a mass flow controller located outside the constant temperature chamber and connected to the culture flask unit through an injection flow path to control a gas injected into the culture flask unit through the injection flow path; and an impinger located outside the constant temperature chamber and connected to the culture flask unit through a discharge flow path to receive a gas discharged from the culture flask unit through the discharge flow path in real time.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: July 9, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Jung Hye Won, Min Hwan Jung, Ji Seok Lee, Hae Sung Yun
  • Patent number: 12025554
    Abstract: A method for quantitative analysis of hydrogen gas generated due to the decomposition of Si—OH (silanol) in porous silica, which is a support of a metallocene catalyst is provided. The analysis enables the measurement of the content of hydrogen present in trace amounts in silica by employing an inert gas fusion-infrared absorption (IGFIA) method under specific pressure and temperature conditions.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: July 2, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Sumin Na, Jieun Kim, Sunah Shin, Min Hwan Jung
  • Publication number: 20240151697
    Abstract: A method for analysis of residual lithium compounds in a positive electrode active material for a lithium secondary battery comprises the steps of: analyzing a sample of a positive electrode active material using an oxygen/nitrogen/hydrogen analyzer (ONH analyzer) and a Karl Fischer analyzer to determine the amount of the H component; analyzing the sample using a carbon/sulfur analyzer (CS analyzer) to determine the amount of the C component and the S component; analyzing the sample using an inductively coupled plasma optical emission spectrometer (ICP-OES) to determine the amount of the Li component; and calculating the amount of each of LiOH, Li2CO3, and Li2SO4 in the sample using the quantification results of the H, C, and S components, and calculating the amount of Li2O in the sample using the quantification result of the Li component.
    Type: Application
    Filed: November 15, 2022
    Publication date: May 9, 2024
    Applicants: LG Chem, Ltd., LG Chem, Ltd.
    Inventors: Kyeongrak Kim, Dong Wook Lee, Min Hwan Jung, Youkyong Seo
  • Publication number: 20230324304
    Abstract: A method for analyzing the content of boron in a cathode active material is disclosed herein. In some embodiments, a method comprises (S1) introducing boron into a cathode active material to prepare a cathode active material sample, (S2) separating a first liquid layer and a first precipitate by dissolving the sample in water, treating the first liquid layer with acid to form a first resulting solution, and measuring the boron concentration in the first resulting solution by inductively coupled plasma optical emission spectroscopy (ICP-OES), (S3) separating a second liquid layer and a second precipitate by dissolving the first precipitate in water, treating the second liquid layer with acid to form a second resulting solution, and measuring the boron concentration of the second resulting solution by ICP-OES, and (S4) measuring the boron concentration of a third resulting solution, obtained by adding acid and hydrogen peroxide to the second precipitate, by ICP-OES.
    Type: Application
    Filed: September 1, 2021
    Publication date: October 12, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jung Hye Won, Sung Hag Kim, Min Hwan Jung, Jung Eun Song, Kyeongrak Kim
  • Publication number: 20230168159
    Abstract: The present invention relates to a gas collection device, and provides a gas collection device for collecting gas that is generated as microorganisms are cultured in a super absorbent polymer product.
    Type: Application
    Filed: September 1, 2021
    Publication date: June 1, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jung Hye Won, Eunbyeol Ko, Nak Hee Choi, Min Hwan Jung, Ji Seok Lee, Haesung Yun
  • Publication number: 20220002647
    Abstract: The gas collection device includes a constant temperature chamber whose interior is maintained at a set temperature; a culture flask unit located inside the constant temperature chamber and culturing bacteria therein; a mass flow controller located outside the constant temperature chamber and connected to the culture flask unit through an injection flow path to control a gas injected into the culture flask unit through the injection flow path; and an impinger located outside the constant temperature chamber and connected to the culture flask unit through a discharge flow path to receive a gas discharged from the culture flask unit through the discharge flow path in real time.
    Type: Application
    Filed: February 9, 2021
    Publication date: January 6, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jung Hye Won, Min Hwan Jung, Ji Seok Lee, Hae Sung Yun
  • Publication number: 20210325353
    Abstract: The present invention relates to a device and a method for evaluating performance of a deodorant using a superabsorbent polymer (SAP), and the device and method are capable of quantitatively evaluating deodorant performance by collecting ammonia adsorbed to deodorant materials including the SAP and measuring the amount of ammonia thereof.
    Type: Application
    Filed: April 9, 2020
    Publication date: October 21, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Jihyang Son, Min Hwan Jung, Jin Woo Lee
  • Publication number: 20200166452
    Abstract: A method for quantitative analysis of hydrogen gas generated due to the decomposition of Si—OH (silanol) in porous silica, which is a support of a metallocene catalyst is provided. The analysis enables the measurement of the content of hydrogen present in trace amounts in silica by employing an inert gas fusion-infrared absorption (IGFIA) method under specific pressure and temperature conditions.
    Type: Application
    Filed: January 16, 2019
    Publication date: May 28, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sumin Na, Jieun Kim, Sunah Shin, Min Hwan Jung
  • Patent number: 6838481
    Abstract: The invention relates to 5,15-diacetyl-3-benzoyllathyrol compound and a skin whitening composition containing the same. Since the composition of the invention contains 5,15-diacetyl-3-benzoyllathyrol as a melanine production inhibitor, it is excellent in inhibiting pigment stagnation and improving the discoloration of the skin or freckles. In addition, since it does not induce a secondary effect, it has excellent stability.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: January 4, 2005
    Assignee: LG Household & Health Care Ltd.
    Inventors: Cheong-Taek Kim, Ho-Jeong Kim, Mu-Hyun Jin, Min-Hwan Jung, Jung-Mi Won
  • Patent number: 6521595
    Abstract: The present invention relates to methods for treating alopecia and stimulating hair growth and pharmaceutical compositions using nonimmunosuppressive [&ggr;-hydroxy-methylleucine4] cyclosporin A having superior hair growth-promoting effect, wherein the hydroxyl group is added to the carbon position of No. 4 methylleucine of cyclosporin A by the microorganism.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: February 18, 2003
    Assignee: LG Chemical, Ltd.
    Inventors: Sang-Nyun Kim, Ho-Jeong Ahn, Myung-Kee Kim, Jong-Il Kim, Jung-Hun Kim, Chang-Woo Lee, Min-Ho Lee, Chang-Deok Kim, Ho-Song Cho, Hyun-Sik Kim, Min-Hwan Jung, Seung-Jin Kim