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).

  • Patent number: 8410198
    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: Grant
    Filed: December 7, 2010
    Date of Patent: April 2, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Ywan-Hee Lee, Doo-Han Ha, Jin-Young Huh, Young-Seok Chang
  • Patent number: 8367770
    Abstract: One aspect of the invention relates to an acrylate-vinyl aromatic-unsaturated nitrile graft copolymer. The acrylate-vinyl aromatic-unsaturated nitrile graft copolymer can include: a double layered rubbery polymer comprising an inner core layer of alkylacrylate-vinyl aromatic copolymer and an outer core layer of alkylacrylate polymer; and a vinyl aromatic-unsaturated nitrile copolymer shell layer grafted onto the double layered rubbery polymer. Another aspect of the invention relates to a weatherable thermoplastic resin composition including the foregoing acrylate-vinyl aromatic-unsaturated nitrile graft copolymer.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: February 5, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Doo Han Ha, Jun Hwan An
  • Publication number: 20120329910
    Abstract: Disclosed is a thermoplastic resin composition that includes: a polyester resin (A); an epoxy-modified glass fiber (C); and a hydrolysis resistant additive (D) comprising an alicyclic epoxy compound, a carbodiimide compound, or a combination thereof.
    Type: Application
    Filed: December 22, 2011
    Publication date: December 27, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ywan-Hee LEE, Doo-Han HA, Jin-Young HUH
  • Patent number: 8314182
    Abstract: A resin composition having good scratch resistance includes about 5 to about 50 parts by weight of core-shell graft resin (A) and about 95 to about 50 parts by weight of resin (B) which includes about 40 to about 100% by weight of (meth)acrylic acid alkyl ester. The outer shell of the core-shell graft resin (A) comprises (meth)acrylic acid alkyl ester.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: November 20, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Doo Han Ha, Bong Jae Jeong
  • Publication number: 20120270965
    Abstract: Provided are a thermoplastic resin composition including (A) a core-shell structured copolymer including a shell polymerized from at least an acrylic-based compound, (B) an acrylic-based polymer polymerized from at least an acryl-based monomer, and (C) a surface-controlling agent, and a molded product using the same.
    Type: Application
    Filed: June 28, 2012
    Publication date: October 25, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: In-Chol KIM, Doo-Han HA, Tae-Woog JANG, Dong-Hui CHU
  • Publication number: 20120270988
    Abstract: Provided are a thermoplastic resin composition including a thermoplastic resin and an amorphous sheet-shaped metal particle having a ratio of thickness relative to long diameter of about 1:20 to about 1:1, and a molded product using the same.
    Type: Application
    Filed: June 28, 2012
    Publication date: October 25, 2012
    Applicant: Cheil Industries Inc.
    Inventors: Hyung-Tak Lee, Doo-Han Ha, Jin-Kyung Cho, Young-Chul Kwon
  • Publication number: 20120264882
    Abstract: Provided are a thermoplastic resin composition that includes (A) about 60 to about 95 wt % of a base resin including (A-1) polyalkyl(meth)acrylate resin and (A-2) a vinyl-based copolymer; and (B) about 5 to about 40 wt % of a core-shell structured copolymer including a polymer of at least two compounds selected from an aromatic vinyl compound, a vinyl cyanide compound, and an acrylic-based compound, grafted on a rubbery polymer, and a molded product using the same.
    Type: Application
    Filed: June 28, 2012
    Publication date: October 18, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Dong-Hui CHU, Doo-Han HA, In-Chol KIM, Sung-Hun JIN
  • Publication number: 20120264869
    Abstract: Provided are a thermoplastic resin composition including a thermoplastic resin and a metal particle obtained by punching that has a ratio of thickness relative to long diameter of about 1:7 to about 1:1, and a molded product using the same.
    Type: Application
    Filed: June 28, 2012
    Publication date: October 18, 2012
    Applicant: Cheil Industries Inc.
    Inventors: Hyung-Tak LEE, Doo-Han HA, Jin-Kyung CHO, Young-Chul KWON
  • Publication number: 20120232184
    Abstract: Provided are an environmentally-friendly polyamide resin composition that includes (A-1) a first polyamide resin including polyamide 11, polyamide 1010, or a combination thereof, (B) a glass fiber having a cross-sectional aspect ratio of about 1.5 or more, and (C) a branched graft copolymer including a polyolefin main chain, and optionally (A-2) second polyamide resin including a C6 organic chain in one repeating unit, and a molded product using the same.
    Type: Application
    Filed: May 24, 2012
    Publication date: September 13, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Young-Chul KWON, Doo-Han HA, Hyung-Tak LEE, Bong-Jae LEE, Chang-Do JUNG
  • Publication number: 20120214932
    Abstract: Disclosed is a polyphenylene ether-based resin composition that includes (A) a base resin including (A-1) polyphenylene ether-based resin and (A-2) polyamide resin, (B) carbon nanotubes, (C) a styrene-based copolymer, and (D) an olefin-based copolymer.
    Type: Application
    Filed: April 30, 2012
    Publication date: August 23, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jin-Young HUH, Doo-Han HA
  • Publication number: 20120172499
    Abstract: Disclosed are an acrylic-based resin composition including (A) a first acrylic-based copolymer having a core-shell structure including a rubber having an average particle diameter of about 0.1 to about 0.30 ?m, (B) a second acrylic-based copolymer having a core-shell structure including a rubber having an average particle diameter of about 0.35 to about 0.6 ?m, (C) a vinyl-based copolymer, (D) an ultraviolet (UV) stabilizer, and (E) an UV absorber; and a molded product made using the same.
    Type: Application
    Filed: September 21, 2011
    Publication date: July 5, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Hee-Seok NA, Doo-Han HA, Young-Sin KIM, Ji-Eun PARK
  • Publication number: 20120172515
    Abstract: Polyphenylene ether thermoplastic resin compositions are formed by adding a polyamide resin to a composition of a polyphenylene ether resin and a polystyrene resin. The composition can have improved heat deflection temperature while maintaining fluidity of polyphenylene ether.
    Type: Application
    Filed: November 21, 2011
    Publication date: July 5, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jin Kyung CHO, Do Hoon CHANG, Doo Han HA, Ywan Hee LEE, Jin Young HUH
  • Publication number: 20120165425
    Abstract: A polycarbonate resin composition including (A) a mixed resin including (A1) a polycarbonate resin; (A2) a polybutylene terephthalate resin; and (A3) a polycarbonate-polysiloxane copolymer; and (B) a graft copolymer including an unsaturated compound including an acrylic-based compound graft-polymerized into a rubber.
    Type: Application
    Filed: July 27, 2011
    Publication date: June 28, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jung-Eun PARK, Doo-Han HA
  • Publication number: 20120157606
    Abstract: Disclosed are a polyamide resin composition that includes (A) a crystalline polyamide mixed resin including an aliphatic group and at least two different crystalline polyamide resins, (B) a non-crystalline polyamide resin including an aromatic group, and (C) a glass fiber, and a molded product manufacture using the same.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 21, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Ywan-Hee LEE, Young-Seok CHANG, Jin-Kyung CHO, Doo-Han HA, Jin-Young HUH
  • Patent number: 8202938
    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: Grant
    Filed: November 5, 2009
    Date of Patent: June 19, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Byung-Choon Lee, Doo-Han Ha, Tae-Uk Kim, Jae-Hoon Jeong, Il-Jin Kim
  • Publication number: 20120129989
    Abstract: Provided is a thermoplastic resin composition that includes (A) a base resin including (A-1) a polycarbonate resin and (A-2) a polyester resin, (B) a styrene-based polymer, (C) an impact-reinforcing agent and (D) a phenol-based antioxidant.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Bang-Duk KIM, Jung-Eun PARK, Doo-Han HA
  • Publication number: 20120129993
    Abstract: A polycarbonate resin composition includes about 100 parts by weight of a base resin including a polycarbonate resin (A) and a polycarbonate-polysiloxane copolymer (B); and about 0.1 to about 10 parts by weight of polyalkylaryl siloxane (C) having a refractive index of about 1.42 to about 1.59. The composition can exhibit high gloss and blackness and can have excellent impact resistance, heat resistance, light resistance, and mar resistance (resistance to fine scratches).
    Type: Application
    Filed: October 10, 2011
    Publication date: May 24, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Doo Han HA, Young Chul KWON
  • Publication number: 20120065318
    Abstract: A polyester/polycarbonate alloy resin composition that includes (A) a base resin including (A-1) a polyester resin and (A-2) a polycarbonate resin; (B) a copolymer of a vinyl cyanide compound and an aromatic vinyl compound; and (C) a modified acrylic-based polymer is provided.
    Type: Application
    Filed: November 21, 2011
    Publication date: March 15, 2012
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jung-Eun PARK, In-Sik SHIM, Bang-Duk KIM, Doo-Han HA
  • Patent number: 8133943
    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: Grant
    Filed: November 18, 2009
    Date of Patent: March 13, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Jin-Kyung Cho, Hyung-Tak Lee, Doo-Han Ha, Chang-Do Jung
  • Patent number: 8133958
    Abstract: One aspect of the invention relates to a methacrylate resin prepared by suspension polymerization using a polyalkylacrylate-acrylic acid as a suspension stabilizer. The suspension stabilizer is used in an amount of about 0.05 to about 0.25 parts by weight per 100 parts by weight of a monomer mixture. Another aspect of the invention relates to a method for preparing a methacrylate resin, which comprises: preparing a mixture by mixing an initiator and a chain-transfer agent with a monomer mixture comprising at least about 50% by weight of alkyl methacrylate; and adding the mixture to an aqueous solution of polyalkylacrylate-acrylic acid to conduct suspension polymerization.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: March 13, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Jae Hoon Jeong, Doo Han Ha, Jung Ho Jang