Patents by Inventor Ja Kwan GOO

Ja Kwan GOO 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).

  • Thermoplastic resin composition and molded products thereof
    Patent number: 9631087
    Abstract: A thermoplastic resin composition according to the present invention is characterized by comprising: (A) a polycarbonate resin; and (B) a biphenyl group-containing (meth)acrylic copolymer. As such, the refractive index of the biphenyl group-containing (meth)acrylic copolymer (B) can be approximately from 1.495 to 1.640. The thermoplastic resin composition exhibits superior balance of material properties such as impact strength, internal scratch resistance, transparency, thermal resistance and appearance.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: April 25, 2017
    Assignee: LOTTE ADVANCED MATERIALS CO., LTD.
    Inventors: Jin Hwa Chung, Kee Hae Kwon, Joo Hyun Jang, Ja Kwan Goo, Kwang Soo Park
  • Thermoplastic (meth)acrylate copolymer, resin composition comprising same, and molded products thereof
    Patent number: 9353200
    Abstract: Disclosed herein is a thermoplastic (meth)acrylate copolymer, which includes a derivative unit obtained from a monomer mixture including: (A) an aromatic (meth)acrylate having an index of refraction from about 1.580 to about 1.700; and (B) a monofunctional unsaturated monomer.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: May 31, 2016
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Jin Hwa Chung, Kee Hae Kwon, Joo Hyun Jang, Yong Hee Kang, Ja Kwan Goo, Man Suk Kim, Kwang Soo Park
  • Flame retardant acrylic-based copolymer, resin composition comprising same and molding form thereof
    Patent number: 9273173
    Abstract: The present invention provides a flame retardant acrylic-based copolymer which includes a derivative unit obtained from a monomer mixture comprising: (A) a (meth)acrylic monomer; (B) at least one vinyl monomer selected from the group consisting of an aromatic vinyl monomer and an unsaturated nitrile monomer; and (C) a phosphorus-based (meth)acrylic monomer. The flame retardant acrylic copolymer has high refractivity and exhibits excellent flame retardancy and scratch resistance.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: March 1, 2016
    Assignee: CHEIL INDUSTRIES INC.
    Inventors: Joo Hyun Jang, Kee Hae Kwon, Jin Hwa Chung, Yong Hee Kang, Ja Kwan Goo, Man Suk Kim, Kwang Soo Park
  • THERMOPLASTIC (METH)ACRYLATE COPOLYMER, RESIN COMPOSITION COMPRISING SAME, AND MOLDED PRODUCTS THEREOF
    Publication number: 20140371344
    Abstract: Disclosed herein is a thermoplastic (meth)acrylate copolymer, which includes a derivative unit obtained from a monomer mixture including: (A) an aromatic (meth)acrylate having an index of refraction from about 1.580 to about 1.700; and (B) a monofunctional unsaturated monomer.
    Type: Application
    Filed: December 29, 2011
    Publication date: December 18, 2014
    Inventors: Jin Hwa Chung, Kee Hae Kwon, Joo Hyun Jang, Yong Hee Kang, Ja Kwan Goo, Man Suk Kim, Kwang Soo Park
  • THERMOPLASTIC RESIN COMPOSITION AND MOLDED PRODUCTS THEREOF
    Publication number: 20140371375
    Abstract: A thermoplastic resin composition according to the present invention is characterized by comprising: (A) a polycarbonate resin; and (B) a biphenyl group-containing (meth)acrylic copolymer. As such, the refractive index of the biphenyl group-containing (meth)acrylic copolymer (B) can be approximately from 1.495 to 1.640. The thermoplastic resin composition exhibits superior balance of material properties such as impact strength, internal scratch resistance, transparency, thermal resistance and appearance.
    Type: Application
    Filed: December 5, 2012
    Publication date: December 18, 2014
    Inventors: Jin Hwa Chung, Kee Hae Kwon, Joo Hyun Jang, Ja Kwan Goo, Kwang Soo Park
  • FLAME RETARDANT ACRYLIC-BASED COPOLYMER, RESIN COMPOSITION COMPRISING SAME AND MOLDING FORM THEREOF
    Publication number: 20140346418
    Abstract: The present invention provides a flame retardant acrylic-based copolymer which includes a derivative unit obtained from a monomer mixture comprising: (A) a (meth)acrylic monomer; (B) at least one vinyl monomer selected from the group consisting of an aromatic vinyl monomer and an unsaturated nitrile monomer; and (C) a phosphorus-based (meth)acrylic monomer. The flame retardant acrylic copolymer has high refractivity and exhibits excellent flame retardancy and scratch resistance.
    Type: Application
    Filed: November 28, 2012
    Publication date: November 27, 2014
    Inventors: Joo Hyun Jang, Kee Hae Kwon, Jin Hwa Chung, Yong Hee Kang, Ja Kwan Goo, Man Suk Kim, Kwang Soo Park
  • (Meth)Acrylic Copolymer, Method for Preparing the Same and Thermoplastic Resin Composition Comprising the Same
    Publication number: 20140187688
    Abstract: A (meth)acrylic copolymer is a copolymer of a monomer mixture including a phosphorus-based (meth)acrylic monomer represented by Formula 1, and a monofunctional unsaturated monomer. The (meth)acrylic copolymer can have improved refractive index, excellent flame resistance, transparency, scratch resistance and/or environment-friendliness: wherein R1 is hydrogen or methyl, R2 is a substituted or unsubstituted C1-C20 hydrocarbon group, R3 and R4 are the same or different and are each independently a substituted or unsubstituted C6-C20 cyclic hydrocarbon group, m is an integer from 1 to 10, and n is an integer from 0 to 5.
    Type: Application
    Filed: June 27, 2013
    Publication date: July 3, 2014
    Inventors: Joo Hyun JANG, Kee Hae KWON, Bo Eun KIM, Yong Hee KANG, Ja Kwan GOO, Man Suk KIM, Il Jin KIM, Kwang Soo PARK, Natarajan Senthilkumar, Jo Won LEE