Patents by Inventor Hye Mi Nam

Hye Mi Nam 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: 11655318
    Abstract: A method of preparing super absorbent polymer includes carrying out a crosslinking polymerization of a monomer mixture comprising a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups, a forming agent, a foam-promoting agent and a silicone-based surfactant in the presence of an internal crosslinking agent to form a hydrogel polymer; drying, pulverizing and classifying the hydrogel polymer to form a base polymer powder; and further crosslinking a surface of the base polymer powder in the presence of a surface crosslinking agent to form a surface crosslinked layer. The method produces super absorbent polymer having not only an excellent absorbent capacity and an absorbency under load but also the rewetting phenomenon can be effectively prevented.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 23, 2023
    Inventors: Sang Gi Lee, Hye Mi Nam, Min Ho Hwang, Soo Jin Lee, Tae Hwan Jang
  • Patent number: 11635421
    Abstract: A SAP evaluation apparatus includes: a main body installed with a lifting bar that is raised or lowered; a container portion installed under the lifting bar in the main body and having an internal containing space for containing an absorber; an operating portion connected to the lifting bar and having a lifting plate that is raised or lowered within the containing space and applies pressure to the absorber and an injection portion for injecting an ink in the direction of the absorber; a dispersion measurement portion for measuring the dispersion of the ink through the absorber; and a controller installed at the main body to measure absorption of the ink into the absorber and measure swelling capacity of the absorber while the ink is injected into the absorber.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: April 25, 2023
    Inventors: Yeon Soo Kim, Hye Mi Nam, Hyunsup Lee, Sang Gi Lee, Chang Hun Han, Myung Han Lee, Hyejin Han
  • Patent number: 11618805
    Abstract: The present invention relates to a method for preparing a superabsorbent polymer, and a superabsorbent polymer prepared thereby. A superabsorbent polymer prepared by the preparation method exhibits minimized deterioration of physical properties after being pulverized, and thus basic absorbance performance is excellent and an excellent liquid permeability and absorbance rate can be exhibited.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: April 4, 2023
    Inventors: Hye Mi Nam, Min Ho Hwang, Sang Gi Lee, Tae Hwan Jang, Soo Jin Lee
  • Patent number: 11407848
    Abstract: A method is provided for preparing a super absorbent polymer capable of exhibiting an excellent absorption rate by including a uniform porous structure through a simple and economical process. The method includes: performing a crosslinking polymerization of a water-soluble ethylenically unsaturated monomer to form a hydrogel polymer; drying and pulverizing the hydrogel polymer; classifying the pulverized polymer into polymer particles having a particle size of at least 10 to 150 ?m, polymer particles having a particle size of 150 to 200 ?m, and polymer particles having a particle size of 200 to 850 ?m to form a base polymer powder having a particle size of 150 to 850 ?m; and surface-crosslinking the base polymer powder, wherein in the crosslinking polymerization step, the foaming polymerization proceeds in the presence of polymer particles having an average particle size of 10 to 200 ?m obtained in the classifying step and an anionic surfactant.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: August 9, 2022
    Inventors: Moo Kon Kim, Sang Gi Lee, Hye Mi Nam, Chang Hun Lee, Tae Yun Kim
  • Patent number: 11384208
    Abstract: A super absorbent polymer according to the present invention has an excellent discoloration resistance property even under high temperature/high humidity conditions, while maintaining excellent absorption performance, and is preferably used for hygienic materials such as diapers, and thus can exhibit excellent performance.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: July 12, 2022
    Inventors: Sang Gi Lee, Hye Mi Nam, Soo Jin Lee, Chang Sun Han, Moo Kon Kim
  • Publication number: 20220162310
    Abstract: The present invention relates to: an antibody to T cell Immunoreceptor with Ig and Tyrosine-Based Inhibitory Motif Domains (TIGIT), or an antigen-binding fragment thereof; a nucleic acid encoding same; a vector carrying the nucleic acid; a cell transformed with the vector; a method for producing the antibody or the antigen-binding fragment thereof; and a composition and a composition for combined administration, which comprise same and are for preventing or treating cancer.
    Type: Application
    Filed: May 22, 2020
    Publication date: May 26, 2022
    Inventors: Hye-Young PARK, Eun Jung SONG, Eun Hee LEE, Hye In YUM, Hye Mi NAM, Mun Kyung KIM, Jee Won LEE, Joong Hyuk SHEEN, Min Kyu HUR, So Jung LIM, Ok Jae LIM, Yang Mi LIM, Jong Hwa WON
  • Patent number: 11325101
    Abstract: The present invention relates to a super absorbent polymer having not only excellent absorption rate and absorbency under load but also excellent rewetting properties, and a method for preparing the same.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: May 10, 2022
    Inventors: Sang Gi Lee, Hye Mi Nam, Min Ho Hwang, Soo Jin Lee, Tae Hwan Jang
  • Patent number: 11071968
    Abstract: The present invention relates to a method for preparing superabsorbent polymer that has not only excellent permeability and absorption speed, but also minimized absorbency under pressure decrease rate, and superabsorbent polymer prepared thereby.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: July 27, 2021
    Inventors: Min Ho Hwang, Hye Mi Nam, Sang Gi Lee, Soo Jin Lee, Tae Hwan Jang
  • Patent number: 11059025
    Abstract: The present invention relates to a super absorbent resin, and the super absorbent resin can exhibit a fast absorption rate and high gel strength even in a partially swollen state through the size optimization of partially swollen gel particles. Therefore, the use of the super absorbent resin can effectively prevent a rewetting phenomenon.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: July 13, 2021
    Inventors: Sang Gi Lee, Hye Mi Nam, Min Ho Hwang, Soo Jin Lee, Tae Hwan Jang
  • Publication number: 20210061932
    Abstract: A method of preparing super absorbent polymer includes carrying out a crosslinking polymerization of a monomer mixture comprising a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups, a forming agent, a foam-promoting agent and a silicone-based surfactant in the presence of an internal crosslinking agent to form a hydrogel polymer; drying, pulverizing and classifying the hydrogel polymer to form a base polymer powder; and further crosslinking a surface of the base polymer powder in the presence of a surface crosslinking agent to form a surface crosslinked layer. The method produces super absorbent polymer having not only an excellent absorbent capacity and an absorbency under load but also the rewetting phenomenon can be effectively prevented.
    Type: Application
    Filed: September 30, 2020
    Publication date: March 4, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Sang Gi Lee, Hye Mi Nam, Min Ho Hwang, Soo Jin Lee, Tae Hwan Jang
  • Publication number: 20210046449
    Abstract: The present invention relates to an olefin polymer and a method for producing the same. The super absorbent polymer can exhibit excellent absorbent properties even in a swollen state and thus exhibit excellent anti-rewetting effects. Accordingly, when the super absorbent polymer is used, it is possible to provide a sanitary material such as a diaper or a sanitary napkin which can give a smooth touch feeling even after the body fluid is discharged.
    Type: Application
    Filed: October 30, 2020
    Publication date: February 18, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Hye Mi Nam, Sang Gi Lee, Min Ho Hwang, Soo Jin Lee, Chang Sun Han
  • Patent number: 10857044
    Abstract: The present invention relates to a method for a superabsorbent polymer. The preparation method controls the time from the addition of a foaming agent to the initiation of a polymerization reaction, thereby forming an appropriate pore structure in a superabsorbent polymer. The superabsorbent polymer produced through the preparation method can exhibit a remarkably improved absorption rate while exhibiting excellent absorption performance.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: December 8, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Min Ho Hwang, Sang Gi Lee, Hye Mi Nam, Soo Jin Lee, Tae Hwan Jang
  • Patent number: 10850260
    Abstract: A super absorbent polymer and a method for producing the same are disclosed herein. In some embodiments, the super absorbent polymer includes a base polymer powder including a cross-linked polymer, and first and second surface cross-linked layers formed on the base polymer powder. The first and second surface cross-linked layers are formed by further cross-linking the cross-linked polymer in the presence of a surface crosslinking agent, wherein the first and second surface cross-linked layers each include a cross-linked structure derived from epoxy-based and non-epoxy-based surface crosslinking agents. The super absorbent polymer can exhibit excellent absorbent properties even in a swollen state and thus exhibit excellent anti-rewetting effects. Accordingly, when the super absorbent polymer is used, it is possible to provide a sanitary material such as a diaper or a sanitary napkin which can give a smooth touch feeling even after the body fluid is discharged.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: December 1, 2020
    Inventors: Hye Mi Nam, Sang Gi Lee, Min Ho Hwang, Soo Jin Lee, Chang Sun Han
  • Patent number: 10822441
    Abstract: The present invention relates to a super absorbent polymer. In the super absorbent polymer according to the present invention, the content of each of the super absorbent polymer particles having different surface shapes among particles constituting the polymer is optimized, and this not only an absorbent capacity and an absorbency under load are excellent but also the rewetting phenomenon can be effectively prevented.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: November 3, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Sang Gi Lee, Hye Mi Nam, Min Ho Hwang, Soo Jin Lee, Tae Hwan Jang
  • Patent number: 10759912
    Abstract: Provided are a superabsorbent polymer and a preparation method thereof. The superabsorbent polymer may effectively avoid a rewetting phenomenon after absorbing liquid, because a saline solution hardly remains in the empty spaces between swollen gel particles. Accordingly, the superabsorbent polymer may be used to provide hygienic materials, such as diapers, sanitary napkins, etc., which have a fluffy texture even after body fluid is discharged thereto.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: September 1, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Soo Jin Lee, Sang Gi Lee, Hye Mi Nam, Min Ho Hwang, Chang Sun Han
  • Publication number: 20200270403
    Abstract: The present invention relates to a method for preparing a superabsorbent polymer, and a superabsorbent polymer prepared thereby. A superabsorbent polymer prepared by the preparation method exhibits minimized deterioration of physical properties after being pulverized, and thus basic absorbance performance is excellent and an excellent liquid permeability and absorbance rate can be exhibited.
    Type: Application
    Filed: May 11, 2020
    Publication date: August 27, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hye Mi Nam, Min Ho Hwang, Sang Gi Lee, Tae Hwan Jang, Soo Jin Lee
  • Patent number: 10696800
    Abstract: The present invention relates to a method for preparing a superabsorbent polymer, and a superabsorbent polymer prepared thereby. A superabsorbent polymer prepared by the preparation method exhibits minimized deterioration of physical properties after being pulverized, and thus basic absorbance performance is excellent and an excellent liquid permeability and absorbance rate can be exhibited.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: June 30, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Hye Mi Nam, Min Ho Hwang, Sang Gi Lee, Tae Hwan Jang, Soo Jin Lee
  • Publication number: 20200197909
    Abstract: The present invention relates to a method for preparing superabsorbent polymer that has not only excellent permeability and absorption speed, but also minimized absorbency under pressure decrease rate, and superabsorbent polymer prepared thereby.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 25, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Min Ho Hwang, Hye Mi Nam, Sang Gi Lee, Soo Jin Lee, Tae Hwan Jang
  • Patent number: 10654959
    Abstract: The present invention provides a method for preparing a superabsorbent polymer, the method comprising the steps of: forming a function gel polymer by cross-linked polymerization of a monomer mixture under the presence of an internal cross-linking agent, the monomer mixture including a water-soluble ethylene-based unsaturated monomer having an acid group at least part of which is neutralized, a carbonate, a volatile organic solvent, a surfactant, and a bubble promoting agent; forming a base resin powder by drying, grinding, and classifying the function gel polymer; and forming a surface cross-linked layer by additional cross-linking of the surface of the base resin powder under the presence of a surface cross-linking agent. The method for preparing a superabsorbent polymer may provide a superabsorbent polymer which has a porous structure, thereby exhibiting an excellent absorption rate while exhibiting excellent gel strength.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: May 19, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Soo Jin Lee, Hye Mi Nam, Sang Gi Lee, Min Ho Hwang, Tae Hwan Jang
  • Patent number: 10653812
    Abstract: Provided is a method of preparing a superabsorbent polymer which exhibits more improved liquid permeability and absorption rate while maintaining excellent absorption performance. The method of preparing the superabsorbent polymer may include the steps of: performing crosslinking polymerization of water-soluble ethylene-based unsaturated monomers having acidic groups which are at least partially neutralized in the presence of an internal crosslinking agent to form a water-containing gel polymer including a crosslinked polymer; drying, pulverizing, and size-sorting the water-containing gel polymer to form a base polymer powder; performing surface-crosslinking of the base polymer powder using a surface-crosslinking solution including one or more surface-crosslinking agents in the presence of first alumina particles; and adding second alumina particles to the surface-crosslinked base polymer powder and then mixing them with each other.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: May 19, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Min Ho Hwang, Hye Mi Nam, Sang Gi Lee, Soo Jin Lee, Tae Hwan Jang