Patents by Inventor Ayoung LEE

Ayoung 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).

  • Reverse osmosis membrane, manufacturing method therefor, and water treatment module
    Patent number: 11883785
    Abstract: Provided is a reverse osmosis membrane comprising: a support layer comprising a support and a polysulfone layer; and an active layer, wherein a compression modulus is from 20 MPa to 40 MPa, to a method for manufacturing the same, and a water-treatment module.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: January 30, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Ayoung Lee, Yun Seok Choe, Chong Kyu Shin, Phill Lee
  • 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
  • Feed spacer having three-layered structure, and reverse osmosis membrane filter module including same
    Patent number: 11484841
    Abstract: Provided is a feed spacer having a three-layer structure, in which a set forming the feed spacer is formed in a three-layer structure, so that the set, which is in contact with a reverse osmosis membrane, convects raw water to a center of the structure of the feed spacer and a laminar flow velocity gradient is generated at the center to decrease a polarization phenomenon of a reverse osmosis filter module and minimize pressure loss, and a reverse osmosis membrane filter module including the feed spacer.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: November 1, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Ayoung Lee, Dae Hun Kim, Bumjoo Kim, Chong Kyu Shin, Phill Lee, Kyunghoon Min
  • Feed spacer and reverse osmosis filter module including same
    Patent number: 11478750
    Abstract: Provided is a feed spacer, in which angles of strands are differently formed in one feed spacer according to a flow direction of raw water, so that a differential pressure decrease region and a recovery increase region are separated to perform multiple functions, and a reverse osmosis filter module including the feed spacer.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: October 25, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Dae Hun Kim, Ayoung Lee, Kyunghoon Min, Bumjoo Kim, Ye Hoon Im
  • REVERSE OSMOSIS MEMBRANE, MANUFACTURING METHOD THEREFOR, AND WATER TREATMENT MODULE
    Publication number: 20210001279
    Abstract: Provided is a reverse osmosis membrane comprising: a support layer comprising a support and a polysulfone layer; and an active layer, wherein a compression modulus is from 20 MPa to 40 MPa, to a method for manufacturing the same, and a water-treatment module.
    Type: Application
    Filed: May 9, 2019
    Publication date: January 7, 2021
    Inventors: Ayoung LEE, Yun Seok CHOE, Chong Kyu SHIN, Phill LEE
  • FEED SPACER AND REVERSE OSMOSIS FILTER MODULE INCLUDING SAME
    Publication number: 20200114313
    Abstract: Provided is a feed spacer, in which angles of strands are differently formed in one feed spacer according to a flow direction of raw water, so that a differential pressure decrease region and a recovery increase region are separated to perform multiple functions, and a reverse osmosis filter module including the feed spacer.
    Type: Application
    Filed: November 13, 2018
    Publication date: April 16, 2020
    Inventors: Dae Hun KIM, Ayoung LEE, Kyunghoon MIN, Bumjoo KIM, Ye Hoon IM
  • FEED SPACER HAVING THREE-LAYERED STRUCTURE, AND REVERSE OSMOSIS MEMBRANE FILTER MODULE INCLUDING SAME
    Publication number: 20200086276
    Abstract: Provided is a feed spacer having a three-layer structure, in which a set forming the feed spacer is formed in a three-layer structure, so that the set, which is in contact with a reverse osmosis membrane, convects raw water to a center of the structure of the feed spacer and a laminar flow velocity gradient is generated at the center to decrease a polarization phenomenon of a reverse osmosis filter module and minimize pressure loss, and a reverse osmosis membrane filter module including the feed spacer.
    Type: Application
    Filed: October 17, 2018
    Publication date: March 19, 2020
    Inventors: Ayoung LEE, Dae Hun KIM, Bumjoo KIM, Chong Kyu SHIN, Phill LEE, Kyunghoon MIN
  • 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