Patents by Inventor Doo Han Ha

Doo Han Ha 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: 20110281995
    Abstract: Disclosed are a polycarbonate resin composition that includes (A) about 5 wt % to about 89 wt % of a polycarbonate resin; (B) about 10 wt % to about 94 wt % of a polycarbonate-polysiloxane copolymer; and (C) about 1 wt % to about 70 wt % of a modified acrylic-based copolymer, and a molded product made using the polycarbonate thermoplastic resin composition.
    Type: Application
    Filed: December 29, 2010
    Publication date: November 17, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Doo-Han HA, Young-Chul KWON
  • Patent number: 8053534
    Abstract: Disclosed is a thermoplastic resin composition that includes: (A) about 55 to about 95 wt % of a polycarbonate resin; (B) about 1 to about 40 wt % of a polyalkyl(meth)acrylate resin having a weight average molecular weight of about 1,000,000 g/mol or more; and (C) about 0.001 to about 10 wt % of a polysiloxane resin, and a molded product made using the same.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: November 8, 2011
    Assignee: Cheil Industries, Inc.
    Inventors: Byung-Choon Lee, Tae-Uk Kim, Doo-Han Ha
  • Patent number: 8044143
    Abstract: Disclosed are a polyester/polycarbonate alloy resin composition that includes: (A) a mixed resin including (A-1) a polycarbonate resin having a weight average molecular weight ranging from about 30,000 to about 200,000 g/mol and (A-2) a polyester resin having an intrinsic viscosity of about 0.85 to about 1.52 dl/g; (B) an acryl-based resin; and (C) an impact-reinforcing agent, and a molded product made using the polyester/polycarbonate alloy resin composition.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: October 25, 2011
    Assignee: Cheil Industries Inc.
    Inventors: Jung-Eun Park, Bang-Duk Kim, In-Sik Shim, Doo-Han Ha
  • Patent number: 8003727
    Abstract: Disclosed herein is a scratch resistant flame retardant thermoplastic resin composition comprising: 100 parts by weight of a base resin comprising (A) about 1 to about 99% by weight of a polycarbonate resin and (B) about 99 to about 1% by weight of a modified methacrylate resin; and (C) about 1 to about 50 parts by weight of a flame retardant.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: August 23, 2011
    Assignee: Cheil Industries Inc.
    Inventors: Bok Nam Jang, In Chul Jung, Hee Jung Park, Doo Han Ha, Jin Hwan Choi
  • Publication number: 20110159293
    Abstract: Disclosed is a polycarbonate resin composition that includes (A) a polycarbonate resin, (B) a rubber modified vinyl-based graft copolymer including a rubbery polymer having an average particle diameter of about 0.05 to about 0.5 ?m, and (C) a rubber modified vinyl-based copolymer including a rubber-phase particle having an average particle diameter of about 0.6 to about 10 ?m as a dispersion phase. A molded product using the polycarbonate resin composition is also provided.
    Type: Application
    Filed: December 29, 2010
    Publication date: June 30, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jung-Eun Park, Doo-Han Ha
  • Publication number: 20110144239
    Abstract: A glass fiber-reinforced polyester resin composition including: (A) about 30 to about 80 wt % of two or more kinds of polyester resin; (B) about 20 to about 70 wt % of a vinyl-based copolymer including an acrylic-based graft copolymer, a rubber modified vinyl-based graft copolymer, a copolymer of aromatic vinyl monomers and unsaturated nitrile monomers, or a combination thereof; and (C) about 10 to about 100 parts by weight of glass fiber, based on about 100 parts by weight of the total amount of the polyester resin (A) and the vinyl-based copolymer (B), wherein the polyester resin includes polyethylene terephthalate resin having crystallinity of about 40% or more, is provided.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 16, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ywan-Hee LEE, Doo-Han HA, Jin-Young HUH, Young-Seok CHANG
  • Publication number: 20110027510
    Abstract: A polyamide clay composite composition including (A) 100 parts by weight of a base resin containing (A-1) 30 to 99.9% by weight of a polyamide resin and (A-2) 0.1 to 70% by weight of a polyolefin resin, (B) 3 to 30 parts by weight of an olefin oligomer with respect to 100 parts by weight of the basin resin, and (C) 0.5 to 5 parts by weight of a layered clay compound, and a fuel transport tube prepared using the same are provided.
    Type: Application
    Filed: November 17, 2009
    Publication date: February 3, 2011
    Applicants: HYUNDAI MOTOR COMPANY
    Inventors: Choon Soo Lee, Min Hee Lee, Joung Sook Hong, Jin Young Huh, Doo Han Ha
  • Publication number: 20110027512
    Abstract: A conductive polyamide composite composition including (A) 100 parts by weight of a base resin containing (A-1) 50 to 99% by weight of a polyamide resin and (A-2) 1 to 50% by weight of a polyolefin resin, (B) 0.1 to 20 parts by weight of an olefin-copolymer with respect to 100 parts by weight of the base resin, (C) 1 to 15 parts by weight of a carbon black, (D) 0.01 to 5 parts by weight of carbon nanotubes, (E) 0.01 to 10 parts by weight of a plasticizer, and (F) 0.01 to 2 parts by weight of a resin stabilize, and a fuel transport tube prepared using the same are provided.
    Type: Application
    Filed: November 18, 2009
    Publication date: February 3, 2011
    Applicants: HYUNDAI MOTOR COMPANY
    Inventors: Choon Soo Lee, Min Hee Lee, Joung Sook Hong, Jin Young Huh, Doo Han Ha
  • Publication number: 20100327234
    Abstract: Disclosed are a polyphenylene-ether-based thermoplastic resin composition that includes: (A) a mixed resin of (A-1) a polyphenylene-ether-based resin and (A-2) a polyamide resin; (B) a styrene-based copolymer resin; (C) a conductive additive; and (D) mica, a method of preparing the same, and a molded product using the same.
    Type: Application
    Filed: June 2, 2010
    Publication date: December 30, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: In-Sik SHIM, Jin-Young HUH, Doo-Han HA
  • Patent number: 7833603
    Abstract: An optical disc includes an active disc on which information is recorded and a dummy disc for protecting the active disc. The active disc and the dummy disc are bonded to form a single body, and the dummy disc is made of methylmethacrylate-acrylonitrile-butadiene-styrene copolymer (MABS) resin.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: November 16, 2010
    Assignee: Cheil Industries Inc.
    Inventors: Bong Jae Jeong, Doo Han Ha
  • Publication number: 20100168332
    Abstract: Disclosed are a polylactic acid resin composition that includes (A) about 10 to about 80 wt % of a polylactic acid resin; (B) about 5 to about 50 wt % of a rubber modified vinyl-based graft copolymer; (C) about 10 to about 80 wt % of a vinyl-based copolymer; and (D) about 5 to about 75 wt % of poly(meth)acrylic acid alkyl ester, and a molded product made using the same.
    Type: Application
    Filed: December 30, 2009
    Publication date: July 1, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Young-Mi CHUNG, Doo-Han HA, Chang-Do JUNG
  • Publication number: 20100160560
    Abstract: Disclosed is a thermoplastic resin composition that includes: (A) about 55 to about 95 wt % of a polycarbonate resin; (B) about 1 to about 40 wt % of a polyalkyl(meth)acrylate resin having a weight average molecular weight of about 1,000,000 g/mol or more; and (C) about 0.001 to about 10 wt % of a polysiloxane resin, and a molded product made using the same.
    Type: Application
    Filed: December 2, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Byung-Choon LEE, Tae-Uk KIM, Doo-Han HA
  • Publication number: 20100160529
    Abstract: The present invention relates generally to a glass fiber-reinforced polyester resin composition including: (A) about 30 to about 80 wt % of a polyester resin; (B) about 5 to about 30 wt % of a vinyl-based copolymer; and (C) about 10 to about 50 wt % of a glass fiber with a cross-sectional aspect ratio of about 1.5 or more; and a molded product using the same.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ywan-Hee LEE, Doo-Han HA, Bang-Duk KIM, In-Sik SHIM, Young-Seok CHANG
  • Publication number: 20100160499
    Abstract: Disclosed is a polylactic acid/polycarbonate resin composition including (A) about 100 parts by weight of a mixed resin including: (a1)) about 10 to about 90 wt % of a polycarbonate resin and (a2) about 10 to about 90 wt % of a polylactic acid resin; (B) about 1 to about 50 parts by weight of a flame retardant based on about 100 parts by weight of the mixed resin; (C) about 1 to about 30 parts by weight of an acryl-based copolymer based on about 100 parts by weight of the mixed resin; and (D) about 1 to about 20 parts by weight of an impact-reinforcing agent based on about 100 parts by weight of the mixed resin.
    Type: Application
    Filed: November 18, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jin-Kyung CHO, Hyung-Tak LEE, Doo-Han HA, Chang-Do JUNG
  • Publication number: 20100160559
    Abstract: Disclosed is a polylactic acid/polycarbonate resin composition including (A) a mixed resin including (a1) a polycarbonate resin and (a2) a polylactic acid resin, and (B) a modified acrylic-based resin, and a molded product made using the same.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Hyung-Tak Lee, Doo-Han Ha, Chang-Do Jung, Young-Chul Kwon, Jin-Kyung Cho, Young-Mi Chung, Byung-Choon Lee
  • Publication number: 20100160558
    Abstract: Disclosed are a polyhydroxy alkanoate resin composition including (A) a polyhydroxy alkanoate resin and (B) a vinyl-based copolymer resin including (B-1) a copolymer including two or more monomers comprising an aromatic vinyl monomer, an unsaturated nitrile monomer, an acryl-based monomer, or a combination thereof; and (B-2) a rubber-modified vinyl-based graft copolymer and a molded product fabricated using the same.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Young-Mi CHUNG, Chang-Do JUNG, Doo-Han HA
  • Publication number: 20100160532
    Abstract: Disclosed are a polyester/polycarbonate alloy resin composition that includes: (A) a mixed resin including (A-1) a polycarbonate resin having a weight average molecular weight ranging from about 30,000 to about 200,000 g/mol and (A-2) a polyester resin having an intrinsic viscosity of about 0.85 to about 1.52 dl/g; (B) an acryl-based resin; and (C) an impact-reinforcing agent, and a molded product made using the polyester/polycarbonate alloy resin composition.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jung-Eun PARK, Bang-Duk KIM, In-Sik SHIM, Doo-Han HA
  • Publication number: 20100125112
    Abstract: Disclosed is a natural fiber-reinforced polylactic acid resin composition that includes (A) a first polylactic acid resin; and (B) a natural fiber surface-treated with a second polylactic acid resin. The second polylactic acid resin can include a different isomer from the first polylactic acid resin, or alternatively, when measured under isothermal conditions after quenching from about 240° C. to a crystallization temperature, a spherulite crystal is first formed at a surface of the natural fiber and the growth rate at the surface is faster than at other positions. A molded product made using the natural fiber-reinforced polylactic acid resin composition is also disclosed.
    Type: Application
    Filed: November 16, 2009
    Publication date: May 20, 2010
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Young-Mi CHUNG, Chang-Do JUNG, Doo-Han HA
  • Publication number: 20100113697
    Abstract: Disclosed is a thermoplastic resin composition that includes (A) a polycarbonate resin, (B) a modified acryl-based copolymer resin, (C) a polysiloxane copolymer including an aryl group, and (D) a core-shell graft copolymer.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 6, 2010
    Inventors: Byung-Choon LEE, Doo-Han HA, Tae-Uk KIM, Jae-Hoon JEONG, Il-Jin KIM
  • Publication number: 20090240002
    Abstract: Disclosed herein is an impact modifier formed by graft polymerizing about 45 to about 70% by weight of a rubber polymer with about 30 to about 55% by weight of a methacrylate-based monomer, wherein said rubber polymer is prepared by polymerizing about 0.1 to about 1 part by weight of an antioxidant with about 100 parts by weight of a monomer mixture comprising about 30 to about 45% by weight of a diene-based monomer and about 55 to about 70% by weight of alkyl acrylate. The methacrylate-based resin composition of the present invention using the aforementioned impact modifier may have improved transparency, impact resistance and a good appearance.
    Type: Application
    Filed: June 2, 2009
    Publication date: September 24, 2009
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ki Bo CHANG, Doo Han HA, Dong Wook JUNG, Jae Hun JUNG