Patents by Inventor Kyuong Sik CHIN

Kyuong Sik CHIN 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).

  • Patent number: 10316185
    Abstract: Disclosed herein is a polycarbonate resin composition. The polycarbonate resin composition includes a polycarbonate resin, inorganic fillers, an impact modifier comprising a modified olefin-based copolymer, and olefin wax containing a reactive group comprising at least one of a carboxylic acid group, a carboxylic acid anhydride group, an epoxy group, and a glycidyl group, wherein the inorganic fillers comprise flake-type fillers and needle-like fillers. The polycarbonate resin composition has excellent properties in terms of appearance, mechanical properties, and dimensional stability.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 11, 2019
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Ki Hong Choi, Seung Shik Shin, Kyuong Sik Chin
  • Patent number: 10227488
    Abstract: Disclosed herein are a thermoplastic resin composition and a molded article produced from the thermoplastic resin composition. The thermoplastic resin composition includes: a polycarbonate resin; a rubber-modified vinyl graft copolymer; inorganic fillers comprising talc and wollastonite; maleic anhydride-modified olefin wax; and a phosphorus compound represented by the following Formula 1, wherein a weight ratio of the talc to the wollastonite ranges from about 1:0.1 to about 1:0.9, and a weight ratio of the talc to the phosphorus compound ranges from about 1:0.005 to about 1:0.05: wherein R1 and R2 are the same or different and are each independently a hydrogen atom or a C1 to C10 alkyl group and R3 is a C10 to C30 alkyl group. The thermoplastic resin composition can have excellent properties in terms of impact resistance, stiffness, dimensional stability, appearance, and balance therebetween.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: March 12, 2019
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Ki Hong Choi, Seung Shik Shin, Hyun Ho Lee, Kyuong Sik Chin, Sung Hun Choi, Dong In Ha
  • Publication number: 20170369703
    Abstract: A thermoplastic resin composition of the present invention includes a polycarbonate resin; a rubber-modified aromatic vinyl graft copolymer; a polyester resin; a glycol-modified polyester resin having about 10 mol % to about 60 mol % of a cyclohexanedimethanol (CHDM) content based on a total amount of a diol component; and a vinyl copolymer including an epoxy group. The thermoplastic resin composition has good impact resistance, flowability, external appearance and the like.
    Type: Application
    Filed: April 22, 2016
    Publication date: December 28, 2017
    Inventors: Dong In HA, Seung Shik SHIN, Kyuong Sik CHIN
  • Publication number: 20170342262
    Abstract: Disclosed herein is a polycarbonate resin composition. The polycarbonate resin composition includes a polycarbonate resin, inorganic fillers, an impact modifier comprising a modified olefin-based copolymer, and olefin wax containing a reactive group comprising at least one of a carboxylic acid group, a carboxylic acid anhydride group, an epoxy group, and a glycidyl group, wherein the inorganic fillers comprise flake-type fillers and needle-like fillers. The polycarbonate resin composition has excellent properties in terms of appearance, mechanical properties, and dimensional stability.
    Type: Application
    Filed: December 28, 2015
    Publication date: November 30, 2017
    Inventors: Ki Hong CHOI, Seung Shik SHIN, Kyuong Sik CHIN
  • Publication number: 20170275448
    Abstract: A thermoplastic resin composition of the present invention comprises: about 100 parts by weight of a polycarbonate resin; about 10 to about 140 parts by weight of a (meth)acrylic-based resin which comprises a repeating unit represented by chemical formula 1; about 10 to about 80 parts by weight of an aromatic phosphate ester-based compound; and about 10 to 110 parts by weight of a glass fiber, wherein the difference in refractive index between the glass fiber and a resin mixture comprising the polycarbonate resin, the (meth)acrylic-based resin, and the aromatic phosphate ester-based compound is about 0.02 or less. The thermoplastic resin composition has excellent transparency and mechanical strength such as impact resistance, flexural modulus, etc.
    Type: Application
    Filed: December 29, 2014
    Publication date: September 28, 2017
    Inventors: Pil Ho KIM, Seung Shik SHIN, Kyuong Sik CHIN
  • Publication number: 20170190908
    Abstract: Disclosed herein are a thermoplastic resin composition and a molded article produced from the thermoplastic resin composition. The thermoplastic resin composition includes: a polycarbonate resin; a rubber-modified vinyl graft copolymer; inorganic fillers comprising talc and wollastonite; maleic anhydride-modified olefin wax; and a phosphorus compound represented by the following Formula 1, wherein a weight ratio of the talc to the wollastonite ranges from about 1:0.1 to about 1:0.9, and a weight ratio of the talc to the phosphorus compound ranges from about 1:0.005 to about 1:0.05: wherein R1 and R2 are the same or different and are each independently a hydrogen atom or a C1 to C10 alkyl group and R3 is a C10 to C30 alkyl group. The thermoplastic resin composition can have excellent properties in terms of impact resistance, stiffness, dimensional stability, appearance, and balance therebetween.
    Type: Application
    Filed: December 28, 2016
    Publication date: July 6, 2017
    Inventors: Ki Hong CHOI, Seung Shik SHIN, Hyun Ho LEE, Kyuong Sik CHIN, Sung Hun CHOI, Dong In HA
  • Patent number: 9340671
    Abstract: Disclosed herein are a thermoplastic resin composition and a molded article produced therefrom. The thermoplastic resin composition includes a thermoplastic resin, an inorganic filler, and a maleic anhydride (MAH)-grafted rubber, and has a coefficient of linear expansion from about 20×10?6 cm/cm° C. to about 35×10?6 cm/cm° C., as measured in accordance with ASTM D696. The thermoplastic resin composition can exhibit low shrinkage, excellent impact resistance and excellent flexural modulus and can have a good balance therebetween.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: May 17, 2016
    Assignee: Cheil Industries Inc.
    Inventors: Dong In Ha, Dong Min Park, Seung Shik Shin, Kyuong Sik Chin
  • Patent number: 9133323
    Abstract: A flame retardant thermoplastic resin composition includes (a) a polycarbonate resin, (b) an impact modifier, and (c) resorcinol bis(diphenyl phosphate). The impact modifier includes (b1) a large rubber particle-modified vinyl graft copolymer wherein the rubber particle has an average particle diameter of about 0.3 to about 0.7 ?m, and (b2) a small rubber particle-modified graft copolymer wherein the rubber particle has an average particle diameter of about 0.05 to about 0.27 ?m. The flame retardant thermoplastic resin composition can have excellent flowability, mold formability, flame retardancy, impact strength, and gloss characteristics.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: September 15, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Hwan Seok Park, Seung Shik Shin, Kyuong Sik Chin, Yun Ku Nam, Jong Tae Yoon
  • Publication number: 20150183986
    Abstract: A thermoplastic resin composition includes a polycarbonate resin, a rubber-modified aromatic vinyl copolymer resin, a phosphorus flame retardant, fillers, a flow promoter, and a modified polyolefin resin, wherein the flow promoter includes an alicyclic hydrocarbon resin. The thermoplastic resin composition can exhibit excellent properties in terms of stiffness, impact resistance, fluidity, flame retardancy, and the like, and can be formed as a thin film.
    Type: Application
    Filed: December 29, 2014
    Publication date: July 2, 2015
    Inventors: Pil Ho KIM, Seung Shik SHIN, Kyuong Sik CHIN, Ki Hong CHOI
  • Patent number: 9034959
    Abstract: A polycarbonate resin composition includes: (D) about 1 to about 10 parts by weight of a silicon-based resin; (E) about 1 to about 10 parts by weight of a core-shell graft copolymer; and (F) about 1 to about 20 parts by weight of a flame retardant, with respect to about 100 parts by weight of a base resin including: (A) about 70 to about 90 wt % of a polycarbonate resin; (B) about 9 to about 25 wt % of a polysiloxane-polycarbonate copolymer; and (C) about 1 to about 10 wt % of an aromatic vinyl-based graft copolymer. The polycarbonate resin composition can have improved releaseability and external appearance, and excellent impact strength and coloring.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: May 19, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Kyuong-Sik Chin, Jong-Tae Yoon, Seung-Shik Shin
  • Publication number: 20150094414
    Abstract: A thermoplastic resin composition includes: a base resin including a polyarylene ether resin and an aromatic vinyl polymer; a flame retardant; and an impact modifier, wherein the impact modifier is a rubber-modified vinyl graft copolymer in which an unsaturated monomer including about 95 wt % to about 99 wt % of an aromatic vinyl compound and about 1 wt % to about 5 wt % of a vinyl cyanide compound is grafted to a rubbery polymer; the base resin and the flame retardant form a continuous phase; and the impact modifier forms a dispersed phase. The thermoplastic resin composition can have excellent properties in terms of impact resistance, flame retardancy, and balance therebetween.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Inventors: Jo Won LEE, Dong Min PARK, Seung Shik SHIN, Kyuong Sik CHIN
  • Publication number: 20150005422
    Abstract: Disclosed herein are a thermoplastic resin composition and a molded article produced therefrom. The thermoplastic resin composition includes a thermoplastic resin, an inorganic filler, and a maleic anhydride (MAH)-grafted rubber, and has a coefficient of linear expansion from about 20×10?6 cm/cm° C. to about 35×10?6 cm/cm° C., as measured in accordance with ASTM D696. The thermoplastic resin composition can exhibit low shrinkage, excellent impact resistance and excellent flexural modulus and can have a good balance therebetween.
    Type: Application
    Filed: June 19, 2014
    Publication date: January 1, 2015
    Inventors: Dong In HA, Dong Min PARK, Seung Shik SHIN, Kyuong Sik CHIN
  • Publication number: 20140184035
    Abstract: Disclosed herein is a television housing and a method of fabricating the same. The television housing includes a stainless steel (SUS) frame and a plastic member adjoining at least one surface of the stainless steel frame. The plastic member includes: a base resin including about 60 wt % to about 95 wt % of (A) a polycarbonate resin and about 5 wt % to about 40 wt % of (B) a rubber-modified aromatic vinyl graft copolymer resin; and about 5 parts by weight to about 25 parts by weight of (C) bondable glass fibers based on about about 100 parts by weight of the base resin including the (A) polycarbonate resin and the (B) rubber-modified aromatic vinyl graft copolymer resin, and has a tensile strength from about 70 MPa to about 130 MPa at about 23° C. The plastic member employs the bondable glass fibers, and thus can prevent whitening due to an ejector pin upon release at high temperature.
    Type: Application
    Filed: December 18, 2013
    Publication date: July 3, 2014
    Applicant: Cheil Industries Inc.
    Inventors: Jo Won LEE, Kyuong Sik CHIN, Ji Yea KIM, Sang Ki PARK, Seung Shik SHIN
  • Publication number: 20130289179
    Abstract: A polycarbonate resin composition includes: (D) about 1 to about 10 parts by weight of a silicon-based resin; (E) about 1 to about 10 parts by weight of a core-shell graft copolymer; and (F) about 1 to about 20 parts by weight of a flame retardant, with respect to about 100 parts by weight of a base resin including: (A) about 70 to about 90 wt % of a polycarbonate resin; (B) about 9 to about 25 wt % of a polysiloxane-polycarbonate copolymer; and (C) about 1 to about 10 wt % of an aromatic vinyl-based graft copolymer. The polycarbonate resin composition can have improved releaseability and external appearance, and excellent impact strength and coloring.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 31, 2013
    Inventors: Kyuong-Sik CHIN, Jong-Tae YOON, Seung-Shik SHIN
  • Publication number: 20130281568
    Abstract: A flame retardant thermoplastic resin composition includes (a) a polycarbonate resin, (b) an impact modifier, and (c) resorcinol bis(diphenyl phosphate). The impact modifier includes (b1) a large rubber particle-modified vinyl graft copolymer wherein the rubber particle has an average particle diameter of about 0.3 to about 0.7 ?m, and (b2) a small rubber particle-modified graft copolymer wherein the rubber particle has an average particle diameter of about 0.05 to about 0.27 ?m. The flame retardant thermoplastic resin composition can have excellent flowability, mold formability, flame retardancy, impact strength, and gloss characteristics.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 24, 2013
    Inventors: Hwan Seok PARK, Seung Shik SHIN, Kyuong Sik CHIN, Yun Ku NAM, Jong Tae YOON
  • Publication number: 20120172504
    Abstract: A thermoplastic resin composition includes a polycarbonate resin/impact modifier system, a polystyrene resin having a predetermined molecular weight, and a phosphorus flame retardant. The impact modifier includes a particular rubber particle size and is formed of particular monomers. The composition can exhibit improved flame retardancy, impact resistance, fluidity, and appearance.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 5, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Kyuong Sik CHIN, Seung Shik SHIN, Yun Ku NAM, Hwan Seok PARK
  • Publication number: 20120165460
    Abstract: The present invention discloses a polycarbonate resin composition which includes a polycarbonate resin (A), a polycarbonate-polysiloxane copolymer (B), and a siloxane copolyester (C), wherein the siloxane copolyester (C) is present in an amount of about 0.1 to about 6 wt % based on 100 wt % of a base resin including the polycarbonate resin (A), polycarbonate-polysiloxane copolymer (B), and siloxane copolyester (C). The composition can have excellent mold release properties and appearance.
    Type: Application
    Filed: September 22, 2011
    Publication date: June 28, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Hwan Seok PARK, Jin Seong LEE, Jong Tae YOON, Yun Ku NAM, Min Jung KANG, Seung Shik SHIN, Woo Jung KIM, Kyuong Sik CHIN