Patents by Inventor Joon-Khee Yoon

Joon-Khee Yoon 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).

  • Publication number: 20140175006
    Abstract: A method of preparing a composite membrane module includes preparing a single membrane module to which a hollow fiber support layer is potted; and forming an active layer on a surface of the hollow fiber support layer through interfacial polymerization by bringing a surface of the hollow fiber support layer into contact with a first solution comprising an amine and a second solution comprising an acyl halide (in that order). The method can form an active layer having a uniform thickness and good processability. A composite hollow fiber membrane module prepared by the method exhibits a good salt rejection rate.
    Type: Application
    Filed: December 23, 2013
    Publication date: June 26, 2014
    Applicant: Cheil Industries Inc.
    Inventors: Young Hun Kim, Joon Khee Yoon
  • Patent number: 8739978
    Abstract: Disclosed is a porous membrane with high tensile strength, good elongation at break, and good water permeability, and a method for manufacturing the same. The porous membrane comprises a bead structure including plural spherical crystallites, wherein macro voids isolated from one another with the plural spherical crystallites are formed in an outer surface side of the porous membrane.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: June 3, 2014
    Assignee: Kolon Industries Inc.
    Inventors: Joon-Khee Yoon, Moo-Seok Lee
  • Patent number: 8201485
    Abstract: A tubular braid and a composite hollow fiber membrane using the same are disclosed. The tubular braid is made by braiding yarns, the yarn made by combining thin filament and thick filament, wherein the thin filament is comprised of a plurality of monofilament having a fineness of 0.01 to 0.4 denier, and the thick filament is comprised of at least one monofilament having a fineness of 3 to 50 denier. Also, the composite hollow fiber membrane using the tubular braid of the present invention can realize excellent water permeability, high mechanical strength, good filtration reliability, great peeling strength, low dope permeation, and high stiffness.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: June 19, 2012
    Assignee: KOLON Industries, Inc.
    Inventors: Moo-Seok Lee, Joon-Khee Yoon, Sung-Hak Choi, Yong-Cheol Shin
  • Publication number: 20110155659
    Abstract: Disclosed is a porous membrane with high tensile strength, good elongation at break, and good water permeability, and a method for manufacturing the same. The porous membrane comprises a bead structure including plural spherical crystallites, wherein macro voids isolated from one another with the plural spherical crystallites are formed in an outer surface side of the porous membrane.
    Type: Application
    Filed: August 17, 2009
    Publication date: June 30, 2011
    Applicant: KOLON INDUSTRIES, INC.
    Inventors: Joon-Khee Yoon, Moo-Seok Lee
  • Publication number: 20100024631
    Abstract: A tubular braid and a composite hollow fiber membrane using the same are disclosed. The tubular braid is made by braiding yarns, the yarn made by combining thin filament and thick filament, wherein the thin filament is comprised of a plurality of monofilament having a fineness of 0.01 to 0.4 denier, and the thick filament is comprised of at least one monofilament having a fineness of 3 to 50 denier. Also, the composite hollow fiber membrane using the tubular braid of the present invention can realize excellent water permeability, high mechanical strength, good filtration reliability, great peeling strength, low dope permeation, and high stiffness.
    Type: Application
    Filed: February 5, 2008
    Publication date: February 4, 2010
    Applicant: Kolon Industries, Inc.
    Inventors: Moo-Seok Lee, Joon-Khee Yoon, Sung-Hak Choi, Yong-Cheol Shin