Patents by Inventor Young-Jae Hur

Young-Jae Hur 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: 11931720
    Abstract: The present invention relates to superabsorbent polymer and a method for preparing the same. According to the method for preparing superabsorbent polymer of the present invention, superabsorbent polymer having improved rewet property and absorption speed can be provided.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 19, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Young Jae Hur, Dae Woo Nam, Bohee Park, Seongbeom Heo
  • Patent number: 11918978
    Abstract: Provided is a method of preparing a superabsorbent polymer. More specifically, provided is a method of preparing a superabsorbent polymer capable of exhibiting improved initial absorbency and a rapid absorption rate by polymerizing monomers having acidic groups, of which part is neutralized with a basic material including potassium hydroxide, in the presence of an encapsulated foaming agent.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 5, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Seul Ah Lee, Gicheul Kim, Dae Woo Nam, Ki Hyun Kim, Jun Kyu Kim, Young Jae Hur
  • Publication number: 20230149897
    Abstract: The present disclosure relates to a method for preparing a super absorbent polymer. More specifically, it relates to a method for preparing a super absorbent polymer capable of preparing a super absorbent polymer in which the residual monomer content and the extractable content are simultaneously reduced by adding a reducing agent capable of a redox reaction with a thermal polymerization initiator before drying the hydrogel polymer.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 18, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Hyungki YOON, Young Jae HUR, Jin Hyuck JU, Taebin AHN, Dong Hoon PARK, Kwangin SHIN, Jae Soon KIM
  • Patent number: 11613613
    Abstract: The present invention relates to superabsorbent polymer and a method for preparing the same. The present invention can provide a superabsorbent polymer in which a hydrophobic material having an HLB of 0-6, a hydrophilic polymer and a surface cross-linking agent are mixed into a base resin, thereby having improved rewetting characteristics and permeability through surface-modification of the base resin.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: March 28, 2023
    Inventors: Bohee Park, Dae Woo Nam, Young Jae Hur, Yeon Woo Hong, Jiyoon Jeong
  • Patent number: 11466131
    Abstract: Provided are a superabsorbent polymer and a preparation method thereof, including preparing a base resin and conducting surface modification of the base resin in the presence of an inorganic filler. The method of preparing the superabsorbent polymer of the present invention may provide a superabsorbent polymer having improved rewetting property and liquid permeability.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: October 11, 2022
    Inventors: Young Jae Hur, Dae Woo Nam, Bohee Park, Sujin Kim
  • Patent number: 11370856
    Abstract: The present invention relates to super absorbent polymer and a method for preparing the same. According to the super absorbent polymer and preparation method for the same of the present invention, super absorbent polymer having improved rewet property and vortex time can be provided.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: June 28, 2022
    Inventors: Dae Woo Nam, Ki Hyun Kim, Jun Kyu Kim, Young Jae Hur
  • Publication number: 20220098373
    Abstract: A method of preparing a superabsorbent polymer includes preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked in the presence of a sodium polycarboxylate surfactant; and heating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin, wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more. The superabsorbent polymer provides improved rewetting property and liquid permeability.
    Type: Application
    Filed: September 16, 2020
    Publication date: March 31, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Dong Hoon Park, Young Jae Hur, Taebin Ahn, Jihye Ryu
  • Publication number: 20220080387
    Abstract: A method of preparing a superabsorbent polymer includes preparing a base resin in which an acrylic acid-based monomer having acidic groups which are at least partially neutralized and an internal crosslinking agent are crosslinked; and heating the base resin in the presence of a surface crosslinking agent to carry out surface modification of the base resin, wherein the internal crosslinking agent includes a first epoxy crosslinking agent having an epoxy equivalent weight of 100 g/eq or more to less than 130 g/eq, and a second epoxy crosslinking agent having an epoxy equivalent weight of 130 g/eq or more. A superabsorbent polymer having improved rewetting property liquid permeability is also provided.
    Type: Application
    Filed: September 16, 2020
    Publication date: March 17, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Young Jae Hur, Taebin Ahn, Dong Hoon Park, Jihye Ryu
  • Publication number: 20210147640
    Abstract: Provided are a superabsorbent polymer and a preparation method thereof, including preparing a base resin and conducting surface modification of the base resin in the presence of an inorganic filler. The method of preparing the superabsorbent polymer of the present invention may provide a superabsorbent polymer having improved rewetting property and liquid permeability.
    Type: Application
    Filed: September 17, 2019
    Publication date: May 20, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Young Jae Hur, Dae Woo Nam, Bohee Park, Sujin Kim
  • Publication number: 20210113989
    Abstract: The present invention relates to superabsorbent polymer and a method for preparing the same. According to the method for preparing superabsorbent polymer of the present invention, superabsorbent polymer having improved rewet property and absorption speed can be provided.
    Type: Application
    Filed: November 28, 2018
    Publication date: April 22, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Young Jae Hur, Dae Woo Nam, Bohee Park, Seongbeom Heo
  • Patent number: 10960102
    Abstract: A superabsorbent polymer which has excellent initial absorbency and keeps water from flowing out under pressure even after the passage of a long period of time, in which the superabsorbent polymer keeps water from flowing out under pressure even after the passage of a long period of time to exhibit excellent absorbency, and also has an anti-caking property under conditions of high temperature and high humidity to improve storage stability, is provided. The superabsorbent polymer composition of the present invention may be used to improve physical properties of a variety of diapers, potty training pants, incontinence pads, etc., thereby being applied to production of personal absorbent hygiene products having high absorbency and excellent storage stability under conditions of high temperature and high humidity.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: March 30, 2021
    Inventors: Wook Hwan Noh, Jun Kyu Kim, Jong Hyuk Kwon, Young Jae Hur, Ki Han Kim
  • Publication number: 20210023529
    Abstract: Provided is a method of preparing a superabsorbent polymer. More specifically, provided is a method of preparing a superabsorbent polymer capable of exhibiting improved initial absorbency and a rapid absorption rate by polymerizing monomers having acidic groups, of which part is neutralized with a basic material including potassium hydroxide, in the presence of an encapsulated foaming agent.
    Type: Application
    Filed: December 10, 2019
    Publication date: January 28, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Seul Ah Lee, Gicheul Kim, Dae Woo Nam, Ki Hyun Kim, Jun Kyu Kim, Young Jae Hur
  • Publication number: 20210009725
    Abstract: The present invention relates to super absorbent polymer and a method for preparing the same. According to the super absorbent polymer and preparation method for the same of the present invention, super absorbent polymer having improved rewet property and vortex time can be provided.
    Type: Application
    Filed: March 20, 2019
    Publication date: January 14, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Dae Woo Nam, Ki Hyun Kim, Jun Kyu Kim, Young Jae Hur
  • Publication number: 20200308352
    Abstract: The present invention relates to superabsorbent polymer and a method for preparing the same. The present invention can provide a superabsorbent polymer in which a hydrophobic material having an HLB of 0-6, a hydrophilic polymer and a surface cross-linking agent are mixed into a base resin, thereby having improved rewetting characteristics and permeability through surface-modification of the base resin.
    Type: Application
    Filed: November 29, 2018
    Publication date: October 1, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Bohee Park, Dae Woo Nam, Young Jae Hur, Yeon Woo Hong, Jiyoon Jeong
  • Patent number: 9808786
    Abstract: A method of preparing a superabsorbent polymer is provided, which is able to improve physical properties and to recycle fine powder generated during the preparation process. Particularly, a method of preparing a superabsorbent polymer capable of improving physical properties by using a base resin including a water-containing gel polymer and a base-treated fine powder regranulated body, which are different from each other in degree of neutralization, during preparation of the superabsorbent polymer, is provided.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: November 7, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Tae Young Won, Jin Hyun Bae, Jun Kyu Kim, Jong Hyuk Kwon, Young Jae Hur, Yun Kim
  • Patent number: 9539294
    Abstract: A composition includes an isolated bacteriophage Str-PAP-1 having the ability to kill Streptococcus parauberis cells specifically by infecting the same, and may be used to prevent and treat Streptococcus parauberis infections. The bacteriophage Str-PAP-1 that is an active ingredient of the composition has the ability to kill Streptococcus parauberis cells and characteristically has the genome represented by nucleotide sequence of SEQ. ID. NO: 1.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: January 10, 2017
    Assignee: INTRON BIOTECHNOLOGY, INC.
    Inventors: Seong Jun Yoon, Soo Youn Jun, An Sung Kwon, Young Jae Hur, Jung Mi Kim, Sang Hyeon Kang
  • Publication number: 20160235882
    Abstract: A superabsorbent polymer which has excellent initial absorbency and keeps water from flowing out under pressure even after the passage of a long period of time, in which the superabsorbent polymer keeps water from flowing out under pressure even after the passage of a long period of time to exhibit excellent absorbency, and also has an anti-caking property under conditions of high temperature and high humidity to improve storage stability, is provided. The superabsorbent polymer composition of the present invention may be used to improve physical properties of a variety of diapers, potty training pants, incontinence pads, etc., thereby being applied to production of personal absorbent hygiene products having high absorbency and excellent storage stability under conditions of high temperature and high humidity.
    Type: Application
    Filed: December 11, 2014
    Publication date: August 18, 2016
    Applicant: LG Chem, Ltd.
    Inventors: Wook Hwan Noh, Jun Kyu Kim, Jong Hyuk Kwon, Young Jae Hur, Ki Han Kim
  • Publication number: 20160045895
    Abstract: A method of preparing a superabsorbent polymer is provided, which is able to improve physical properties and to recycle fine powder generated during the preparation process. Particularly, a method of preparing a superabsorbent polymer capable of improving physical properties by using a base resin including a water-containing gel polymer and a base-treated fine powder regranulated body, which are different from each other in degree of neutralization, during preparation of the superabsorbent polymer, is provided.
    Type: Application
    Filed: September 12, 2014
    Publication date: February 18, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Tae Young Won, Jin Hyun Bae, Jun Kyu Kim, Jong Hyuk Kwon, Young Jae Hur, Yun Kim
  • Publication number: 20150306159
    Abstract: A composition includes an isolated bacteriophage Str-PAP-1 having the ability to kill Streptococcus parauberis cells specifically by infecting the same, and may be used to prevent and treat Streptococcus parauberis infections. The bacteriophage Str-PAP-1 that is an active ingredient of the composition has the ability to kill Streptococcus parauberis cells and characteristically has the genome represented by nucleotide sequence of SEQ. ID. NO: 1.
    Type: Application
    Filed: April 28, 2015
    Publication date: October 29, 2015
    Inventors: Seong Jun Yoon, Soo Youn Jun, An Sung Kwon, Young Jae Hur, Jung Mi Kim, Sang Hyeon Kang
  • Patent number: 8507620
    Abstract: The present invention relates to a process for preparing a water absorbent resin, particularly to a process for preparing a water absorbent resin which can resolve the uneven size of the fine pulverized gel-type resin and long pulverizing time those are the problems of prior process for preparing the water absorbent resin, by carrying out the pulverizing process of the gel-type resin divided into the coarse pulverizing process which is carried out with the internal cross-linking polymerization, and the fine pulverizing process. According to the preparation process, it is possible to mass-produce the water absorbent resin showing excellent absorption under pressure and low extractable content.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: August 13, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Jun-Kyu Kim, Jong-Hyuk Kwon, Young-Jae Hur, Yun-Kyung Do