Patents by Inventor Bong Ju KWAK

Bong Ju KWAK 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).

  • Composition for forming reverse osmosis membrane protection layer, method for preparing reverse osmosis membrane using same, reverse osmosis membrane, and water treatment module
    Patent number: 11577971
    Abstract: The present specification provides a composition comprising a material of Chemical Formula 1: having a molecular weight of 500,000 to 700,000 where R1 and R2 are the same as or different from each other, and each independently is hydrogen, deuterium, or an alkyl group, and n is from 10,000 to 20,000, for forming a reverse osmosis membrane protective layer, a method for preparing a reverse osmosis membrane using the same, a reverse osmosis membrane and a water-treatment module.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 14, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Ayoung Lee, Sung Kyung Park, Chong Kyu Shin, Bong Ju Kwak
  • Method for manufacturing water treatment separator, water treatment separator manufactured using same, and water treatment module comprising water treatment separator
    Patent number: 10688449
    Abstract: The present specification provides a method for manufacturing a water-treatment separation membrane, the method comprising: preparing a porous support; forming a polyamide active layer on the porous support by using an interfacial polymerization of an aqueous solution comprising an amine compound and an organic solution comprising an acyl halide compound; and coating a coating solution comprising a random copolymer comprising the monomers represented by Chemical Formulae 1 to 3 onto the polyamide active layer, in which a content of the random copolymer is 0.5 wt % to 2 wt % based on a total weight of the coating solution, a water-treatment separation membrane manufactured by using the same, and a water treatment module comprising the water-treatment separation membrane.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: June 23, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Byoungsoo Lee, Taehyeong Kim, Hyungjoon Jeon, Youngju Lee, Chong Kyu Shin, Bong Ju Kwak
  • Water treatment membrane production method, water treatment membrane produced using same, and water treatment module comprising water treatment membrane
    Patent number: 10632428
    Abstract: The present specification relates to a method for manufacturing a water-treatment membrane, a water-treatment membrane manufactured using the same, and a water-treatment module including the water-treatment membrane.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: April 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Byoungsoo Lee, Hyung Joon Jeon, Hyelim Kang, Chong Kyu Shin, Bong Ju Kwak
  • COMPOSITION FOR FORMING REVERSE OSMOSIS MEMBRANE PROTECTION LAYER, METHOD FOR PREPARING REVERSE OSMOSIS MEMBRANE USING SAME, REVERSE OSMOSIS MEMBRANE, AND WATER TREATMENT MODULE
    Publication number: 20190291058
    Abstract: The present specification provides a composition comprising a material of Chemical Formula 1: having a molecular weight of 500,000 to 700,000 where R1 and R2 are the same as or different from each other, and each independently is hydrogen, deuterium, or an alkyl group, and n is from 10,000 to 20,000, for forming a reverse osmosis membrane protective layer, a method for preparing a reverse osmosis membrane using the same, a reverse osmosis membrane and a water-treatment module.
    Type: Application
    Filed: September 29, 2017
    Publication date: September 26, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Ayoung LEE, Sung Kyung PARK, Chong Kyu SHIN, Bong Ju KWAK
  • METHOD FOR MANUFACTURING WATER TREATMENT SEPARATOR, WATER TREATMENT SEPARATOR MANUFACTURED USING SAME, AND WATER TREATMENT MODULE COMPRISING WATER TREATMENT SEPARATOR
    Publication number: 20180318765
    Abstract: The present specification provides a method for manufacturing a water-treatment separation membrane, the method comprising: preparing a porous support; forming a polyamide active layer on the porous support by using an interfacial polymerization of an aqueous solution comprising an amine compound and an organic solution comprising an acyl halide compound; and coating a coating solution comprising a random copolymer comprising the monomers represented by Chemical Formulae 1 to 3 onto the polyamide active layer, in which a content of the random copolymer is 0.5 wt % to 2 wt % based on a total weight of the coating solution, a water-treatment separation membrane manufactured by using the same, and a water treatment module comprising the water-treatment separation membrane.
    Type: Application
    Filed: May 18, 2017
    Publication date: November 8, 2018
    Inventors: Byoungsoo LEE, Taehyeong KIM, Hyungjoon JEON, Youngju LEE, Chong Kyu SHIN, Bong Ju KWAK
  • WATER TREATMENT MEMBRANE PRODUCTION METHOD, WATER TREATMENT MEMBRANE PRODUCED USING SAME, AND WATER TREATMENT MODULE COMPRISING WATER TREATEMENT MEMBRANE
    Publication number: 20180178170
    Abstract: The present specification relates to a method for manufacturing a water-treatment membrane, a water-treatment membrane manufactured using the same, and a water-treatment module including the water-treatment membrane.
    Type: Application
    Filed: May 9, 2016
    Publication date: June 28, 2018
    Inventors: Byoungsoo LEE, Hyung Joon JEON, Hyelim KANG, Chong Kyu SHIN, Bong Ju KWAK