Patents by Inventor Jong-Hyuk KWON

Jong-Hyuk KWON 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: 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
  • 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
  • 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
  • Patent number: 8754838
    Abstract: A discharge circuit of a device including a drive circuit operating by an inputted negative voltage includes: a discharge unit connected between a first input terminal receiving the negative voltage and a second input terminal receiving a ground voltage, and configured to discharge the negative voltage to the ground voltage of the second input terminal in response to a control signal; and a control unit connected between the first input terminal and a third input terminal receiving an operation voltage corresponding to a normal operation mode and an abnormal operation mode of the drive circuit, and configured to generate the control signal in response to an operation signal for determining an operation state and a non-operation state in the normal operation mode of the drive circuit.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: June 17, 2014
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Jong-Hyuk Kwon, Tae-Kyoung Kang, Kwon-Young Oh
  • Patent number: 8623783
    Abstract: The present invention relates to an absorbent resin surface-modified with a cationic polymer compound. According to the present invention, the use of a cationic polymer compound can provide a simple and economical way to prepare an absorbent resin surface-modified with a cationic polymer compound with enhanced absorption rate and absorbency, overcoming the problem with the conventional absorbent resin having low absorption rate and poor absorbency.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: January 7, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Jong-Hyuk Kwon, Jun-Kyu Kim
  • 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
  • Publication number: 20120309619
    Abstract: The present invention relates to an absorbent resin surface-modified with a cationic polymer compound. According to the present invention, the use of a cationic polymer compound can provide a simple and economical way to prepare an absorbent resin surface-modified with a cationic polymer compound with enhanced absorption rate and absorbency, overcoming the problem with the conventional absorbent resin having low absorption rate and poor absorbency.
    Type: Application
    Filed: February 8, 2011
    Publication date: December 6, 2012
    Inventors: Jong-Hyuk Kwon, Jun-Kyu Kim
  • Publication number: 20110301303
    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: Application
    Filed: June 7, 2011
    Publication date: December 8, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Jun-Kyu KIM, Jong-Hyuk KWON, Young-Jae HUR, Yun-Kyung DO
  • Publication number: 20090309824
    Abstract: A discharge circuit of a device including a drive circuit operating by an inputted negative voltage includes: a discharge unit connected between a first input terminal receiving the negative voltage and a second input terminal receiving a ground voltage, and configured to discharge the negative voltage to the ground voltage of the second input terminal in response to a control signal; and a control unit connected between the first input terminal and a third input terminal receiving an operation voltage corresponding to a normal operation mode and an abnormal operation mode of the drive circuit, and configured to generate the control signal in response to an operation signal for determining an operation state and a non-operation state in the normal operation mode of the drive circuit.
    Type: Application
    Filed: April 21, 2009
    Publication date: December 17, 2009
    Inventors: Jong-Hyuk KWON, Tae-Kyoung Kang, Kwon-Young Oh