Patents by Inventor Don Keun Lee

Don Keun 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).

  • Acrylic resin having excellent transparency, fluidity and scratch-resistance
    Patent number: 8933185
    Abstract: An acrylic resin that can have excellent transparency, flowability and scratch-resistance property is prepared by polymerizing a monomer mixture comprising about 10 to about 25% by weight of (meth)acrylic acid alkyl ester monomer, about 50 to about 80% by weight of aromatic vinyl compound, and about 10 to about 25% by weight of vinyl cyanide compound.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: January 13, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Don Keun Lee, Yu Ho Kim
  • Thermoplastic resin composition having good scratch resistance and molded article made therefrom
    Patent number: 8344043
    Abstract: The present invention provides a thermoplastic resin composition that can have improved scratch resistance comprising: (A) about 10 to about 20% by weight of a rubber modified aromatic vinyl graft copolymer resin; (B) about 30 to about 50% by weight of polymethylmethacrylate (PMMA) resin; and (C) about 40 to about 60% by weight of an aromatic vinyl copolymer resin including about 5 to about 50% by weight of a (meth)acrylate alkyl ester. The thermoplastic resin composition of the present invention can have a good balance of various properties such as scratch resistance, impact strength, colorability, gloss, and injection molding properties.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: January 1, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Sung Hun Jin, Chang Min Hong, Dong Hui Chu, Tae Woog Jang, In Chol Kim, Yu Ho Kim, Don Keun Lee
  • Acrylic Resin Having Excellent Transparency, Fluidity and Scratch-Resistance
    Publication number: 20120271022
    Abstract: An acrylic resin that can have excellent transparency, flowability and scratch-resistance property is prepared by polymerizing a monomer mixture comprising about 10 to about 25% by weight of (meth)acrylic acid alkyl ester monomer, about 50 to about 80% by weight of aromatic vinyl compound, and about 10 to about 25% by weight of vinyl cyanide compound.
    Type: Application
    Filed: June 27, 2012
    Publication date: October 25, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Don Keun Lee, Yu Ho Kim
  • Thermoplastic Resin Composition Having Good Scratch Resistance and Molded Article Made Therefrom
    Publication number: 20110152402
    Abstract: The present invention provides a thermoplastic resin composition that can have improved scratch resistance comprising: (A) about 10 to about 20% by weight of a rubber modified aromatic vinyl graft copolymer resin; (B) about 30 to about 50% by weight of polymethylmethacrylate (PMMA) resin; and (C) about 40 to about 60% by weight of an aromatic vinyl copolymer resin including about 5 to about 50% by weight of a (meth)acrylate alkyl ester. The thermoplastic resin composition of the present invention can have a good balance of various properties such as scratch resistance, impact strength, colorability, gloss, and injection molding properties.
    Type: Application
    Filed: December 17, 2010
    Publication date: June 23, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Sung Hun Jin, Chang Min Hong, Dong Hui Chu, Tae Woog Jang, In Chol Kim, Yu Ho Kim, Don Keun Lee