Patents by Inventor Seul Ah LEE

Seul Ah LEE 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: 11969707
    Abstract: The method for preparing a super absorbent polymer according to the present disclosure has a feature that it is possible to reduce the generation of a fine powder during production of the super absorbent polymer while maintaining excellent physical properties of the super absorbent polymer, including centrifuge retention capacity (CRC) and vortex removal time.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: April 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Jaeyul Kim, Jong Hun Song, Gicheul Kim, Yoon Jae Min, Ki Hyun Kim, Seul Ah Lee, In Yong Jeong, Heechang Woo
  • Patent number: 11970443
    Abstract: Provided are a novel crosslinking agent compound, and a superabsorbent polymer prepared by using the same. More particularly, provided are a crosslinking agent compound having a novel structure, which exhibits excellent crosslinking property and thermal degradability, and a superabsorbent polymer prepared by using the same.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: April 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Won Taeck Lim, Wonmun Choi, Gicheul Kim, Ki Hyun Kim, Seul Ah Lee
  • 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: 20240026040
    Abstract: A continuous polymerization reactor for super absorbent polymer is disclosed. The continuous polymerization reactor includes a cylindrical body; a discharge part with a diameter decreasing downward, positioned at a lower part of the body; an inlet positioned at an upper part of and connected to the body, into which a monomer composition is introduced; an outlet positioned at a lower part of the discharge part, from which hydrogel polymer is discharged; and a discharge valve opening or closing the outlet, wherein a ratio (H1/D1) of a sum (H1) of a height of the body and a height of the discharge part to a diameter (D1) of the body is 2 to 4. In addition, a continuous polymerization reaction system comprising the continuous polymerization reactor is also disclosed.
    Type: Application
    Filed: June 20, 2022
    Publication date: January 25, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Gyunhyeok AHN, Yoon Jae MIN, Seul Ah LEE, Gicheul KIM, Hee Kwan PARK, Kyunghoon MIN
  • Patent number: 11731105
    Abstract: The present invention relates to a super absorbent polymer. The super absorbent polymer contains polymer particles formed of large pores in a certain amount or more, and thus can exhibit large surface area and excellent initial absorption capacity. Therefore, when the super absorbent polymer is used, it can provide a sanitary material such as a diaper or a sanitary napkin which can quickly absorb body fluids and impart a dry and soft touch feeling.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: August 22, 2023
    Inventors: Ki Hyun Kim, Kyu Pal Kim, Gi Cheul Kim, Seul Ah Lee, Sang Gi Lee
  • Publication number: 20230201801
    Abstract: The present disclosure relates to a super absorbent polymer, and a preparation method thereof. More specifically, it relates to a super absorbent polymer prepared such that agglomeration between pulverized particles is suppressed, and drying efficiency and uniformity of particle size distribution are improved by including a carboxylic acid-based additive having a specific structure and hydrophobic particles before drying the hydrogel polymer, and a preparation method thereof.
    Type: Application
    Filed: September 10, 2021
    Publication date: June 29, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Yu Jin Kim, Hyeon Choi, Seongkyun Kang, Kiyoul Yoon, Gicheul Kim, Yoon Jae Min, Seul Ah Lee, Ui Seok Chung
  • Publication number: 20230149898
    Abstract: The present disclosure relates to a preparation method of a super absorbent polymer. More specifically, it relates to a preparation method of a super absorbent polymer with improved permeability and anti-caking efficiency while having a high absorption rate by adding an additive having a specific structure to the hydrogel polymer polymerized in the presence of an encapsulated foaming agent, followed by coarse pulverization.
    Type: Application
    Filed: November 10, 2021
    Publication date: May 18, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Seul Ah LEE, Yoon Jae MIN, Ui Seok CHUNG, Gicheul KIM
  • Publication number: 20230111749
    Abstract: The present disclosure relates to a super absorbent polymer and a preparation method of the same. More specifically, it relates to a super absorbent polymer having a reduced extractable content without deterioration in absorption performance, and to a preparation method of the super absorbent polymer capable of producing the above-described super absorbent polymer by performing a polymerization reaction in the presence of a foaming agent and a carboxylic acid-based additive having a specific structure.
    Type: Application
    Filed: November 10, 2021
    Publication date: April 13, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Ui Seok CHUNG, Yoon Jae MIN, Seul Ah LEE, Gicheul KIM
  • Patent number: 11578175
    Abstract: The present disclosure relates to a preparation method of a super absorbent polymer containing a novel cross-linking agent compound. The preparation method of a super absorbent polymer of the present disclosure can provide a super absorbent polymer exhibiting excellent absorption properties and an excellent deodorizing effect by including a cross-linking agent with a novel structure. Therefore, according to the present disclosure, since a separate additive for a deodorizing property is not required, processability and economic efficiency of the manufacturing process can be improved.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: February 14, 2023
    Inventors: Seul Ah Lee, Ki Hyun Kim, Gicheul Kim, Wonmun Choi, Won Taeck Lim
  • Patent number: 11504696
    Abstract: The present invention relates to a super absorbent polymer. The super absorbent polymer exhibits excellent initial absorption capacity, and thus can provide a sanitary material such as a diaper or a sanitary napkin which can quickly absorb body fluids and impart a dry and soft touch feeling.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: November 22, 2022
    Inventors: Kyu Pal Kim, Gi Cheul Kim, Ki Hyun Kim, Seul Ah Lee, Sang Gi Lee
  • Patent number: 11498050
    Abstract: A method of preparing a superabsorbent polymer, which enables the preparation of the superabsorbent polymer exhibiting an improved absorption rate while maintaining excellent absorption performances is provided.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: November 15, 2022
    Inventors: Kyu Pal Kim, Jinuk Choi, Sang Hwa Lee, Gicheul Kim, Ki Hyun Kim, Seul Ah Lee
  • Publication number: 20210387162
    Abstract: The present disclosure relates to a superabsorbent polymer composition and a method for preparing the superabsorbent polymer composition. More specifically, according to a superabsorbent polymer composition and a method for preparing the same of the present disclosure, a superabsorbent polymer composition having improved anticaking efficiency without deterioration of absorption performance can be provided.
    Type: Application
    Filed: July 21, 2020
    Publication date: December 16, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Seul Ah Lee, Ki Hyun Kim, Gicheul Kim, Tae Yun Kim
  • Publication number: 20210146336
    Abstract: The method for preparing a super absorbent polymer according to the present disclosure has a feature that it is possible to reduce the generation of a fine powder during production of the super absorbent polymer while maintaining excellent physical properties of the super absorbent polymer, including centrifuge retention capacity (CRC) and vortex removal time.
    Type: Application
    Filed: November 8, 2019
    Publication date: May 20, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Jaeyul Kim, Jong Hun Song, Gicheul Kim, Yoon Jae Min, Ki Hyun Kim, Seul Ah Lee, In Yong Jeong, Heechang Woo
  • Publication number: 20210094017
    Abstract: Provided is a method of preparing a superabsorbent polymer. More particularly, provided is a method of preparing a superabsorbent polymer having a rapid absorption rate and an improved water retention capacity by additional heat treatment while using a thermally degradable internal crosslinking agent and an encapsulated foaming agent at the same time during polymerization.
    Type: Application
    Filed: December 12, 2019
    Publication date: April 1, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Jinuk Choi, Yesol Yang, Sanghwa Lee, Gicheul Kim, Ki Hyun Kim, Seul Ah Lee
  • Publication number: 20210031169
    Abstract: The present invention relates to a super absorbent polymer. The super absorbent polymer exhibits excellent initial absorption capacity, and thus can provide a sanitary material such as a diaper or a sanitary napkin which can quickly absorb body fluids and impart a dry and soft touch feeling.
    Type: Application
    Filed: August 14, 2018
    Publication date: February 4, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Kyu Pal Kim, Gi Cheul Kim, Ki Hyun Kim, Seul Ah Lee, Sang Gi Lee
  • 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: 20200369595
    Abstract: Provided are a novel crosslinking agent compound, and a superabsorbent polymer prepared by using the same. More particularly, provided are a crosslinking agent compound having a novel structure, which exhibits excellent crosslinking property and thermal degradability, and a superabsorbent polymer prepared by using the same.
    Type: Application
    Filed: October 18, 2019
    Publication date: November 26, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Won Taeck Lim, Wonmun Choi, Gicheul Kim, Ki Hyun Kim, Seul Ah Lee
  • Publication number: 20200368722
    Abstract: A method of preparing a superabsorbent polymer, which enables the preparation of the superabsorbent polymer exhibiting an improved absorption rate while maintaining excellent absorption performances is provided.
    Type: Application
    Filed: November 15, 2019
    Publication date: November 26, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Kyu Pal Kim, Jinuk Choi, Sang Hwa Lee, Gicheul Kim, Ki Hyun Kim, Seul Ah Lee
  • Patent number: 10823906
    Abstract: Disclosed are a backlight unit for planar lighting apparatuses and a manufacturing method thereof. The backlight unit simplifies a layer structure to be formed into the shape of a vehicle interior trim part, and has a thin thickness and improved flexibility. The backlight unit includes a light emitting device configured to emit light; a light guide panel having polycarbonate and configured to disperse the light received from a light emitting device; a reflective sheet having fibers and provided below the light guide panel to reflect the light dispersed by the light guide panel; and an acrylic adhesive sheet interposed between the light guide panel and the reflective sheet. The reflective sheet includes pores.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: November 3, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hong Chan Jeon, Hong Mo Koo, Mi Jung Yun, Dong Kyu Oh, Seul Ah Lee, Byoung Chul Park
  • Patent number: 10795564
    Abstract: Disclosed are a content display control method and a user terminal for performing the content display control method. The content display control method enables a user to see a text and a content corresponding thereto at one time by fixing the content in a specific area of a screen as the user scrolls the screen. Also, the content display control method may unfix the content fixed in the screen when a text displayed on the screen according to the user's scrolling is irrelevant to the content.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: October 6, 2020
    Assignee: KAKAO CORP.
    Inventors: Seung Hyun Ko, Seul Ah Lee, Young Soo Kim