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: 20230081156
    Abstract: Provided are a matting polymer composition having excellent weather resistance and impact resistance, and a matte sheet including the same. The matting polymer composition according to the present disclosure includes two kinds of styrene-acrylonitrile copolymers having different acrylonitrile contents, and a matting agent, and thus, a molded article manufactured by an extrusion or injection process has mechanical properties such as excellent weather resistance and impact resistance, and also may show an effective matting effect and excellent appearance quality.
    Type: Application
    Filed: August 31, 2022
    Publication date: March 16, 2023
    Inventors: Doo Han HA, Soo Wan KIM, Sung Wook HA
  • Publication number: 20230073124
    Abstract: The present disclosure relates to a matting agent including polymer particles, a matting polymer composition including a matting agent, and a method of producing polymer particles. The polymer particles may be produced by a simple process using a suspension polymerization method, and is relatively easy to control a degree of crosslinking. In addition, in a case where a matting polymer composition is prepared using a matting agent including the polymer particles, it is possible to manufacture a molded article having excellent appearance and matting effect without deterioration of the existing mechanical properties such as impact strength and tensile strength of a thermoplastic polymer, and in particular, an excellent matting effect may be exerted even in the extrusion processing, which has been difficult to achieve in the related art.
    Type: Application
    Filed: August 30, 2022
    Publication date: March 9, 2023
    Inventors: Doo Han HA, Soo Wan KIM, Sung Wook HA
  • Publication number: 20230073380
    Abstract: The present disclosure relates to a matting agent including emulsion polymer particles, a matting polymer composition including a matting agent, and a method of producing emulsion polymer particles. The emulsion polymer particles may be produced by a simple process using an emulsion polymerization method, and have the advantage of being relatively easy to control a degree of crosslinking. In addition, in a case where a matting polymer composition is prepared using a matting agent including the emulsion polymer particles, it is possible to manufacture a molded article having excellent appearance and matting effect without deterioration of the existing mechanical properties such as impact strength and tensile strength of a thermoplastic polymer, and in particular, an excellent matting effect may be exerted even in the extrusion processing, which has been difficult to achieve in the related art.
    Type: Application
    Filed: August 31, 2022
    Publication date: March 9, 2023
    Inventors: Doo Han HA, Soo Wan KIM
  • Patent number: 9657167
    Abstract: A thermoplastic resin composition includes a thermoplastic resin; a pearlescent pigment; and a pigment that is not the same as the pearlescent pigment, wherein the pearlescent pigment and pigment have da and db satisfying da<15 and db<15 in an L*a*b* colorimetric system, respectively.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: May 23, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hye-Young Kim, Doo-Han Ha, Jin-Young Huh, Young-Sin Kim, Ywan-Hee Lee
  • Patent number: 9150725
    Abstract: A flame retardant polycarbonate resin composition that can have excellent scratch resistance and impact resistance includes: (A) about 10 to about 89 wt % of a polycarbonate resin; (B) about 10 to about 89 wt % of a polycarbonate-polysiloxane copolymer; (C) about 1 to about 70 wt % of a modified (meth)acrylic copolymer resin; and (D) about 1 to about 50 parts by weight of a phosphorus-based flame retardant, based on about 100 parts by weight of components (A)+(B)+(C).
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: October 6, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Doo Han Ha, Young Chul Kwon
  • Patent number: 9102827
    Abstract: A transparent thermoplastic resin composition includes (A) a methylmethacrylate-styrene-acrylonitrile-butadiene copolymer (g-MABS) which is a graft resin having a core-shell structure and including butadiene with an average particle size of about 700 to about 1800 ?; (B) a methylmethacrylate-styrene-acrylonitrile-butadiene copolymer (g-MABS) which is a graft resin having a core-shell structure and including butadiene with an average particle size of about 2000 to about 4000 ?; (C) dimethyl polysiloxane; and (D) a base resin which includes (meth)acrylic acid alkyl ester in an amount of about 40 to about 100% by weight.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: August 11, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Dong Hui Chu, Doo Han Ha, In Chol Kim
  • Patent number: 9096704
    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: Grant
    Filed: June 2, 2009
    Date of Patent: August 4, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Ki Bo Chang, Doo Han Ha, Dong Wook Jung, Jae Hun Jung
  • Patent number: 9090767
    Abstract: Provided are a polycarbonate resin composition that includes (A) a polycarbonate resin, (B) a first rubber modified vinyl-based graft copolymer including a first rubber having an average particle diameter of about 6 to about 20 ?m and a span of about 0.8 to about 2.8 and (C) a second rubber modified vinyl-based graft copolymer including a second rubber having an average particle diameter of about 0.1 to about 0.5 ?m, and a molded product using the same.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: July 28, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Jung-Eun Park, Doo-Han Ha
  • Patent number: 9062191
    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: Grant
    Filed: April 30, 2012
    Date of Patent: June 23, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Jin-Young Huh, Doo-Han Ha
  • Patent number: 8962733
    Abstract: A thermoplastic resin composition includes a thermoplastic resin and a first metal particle, wherein the first metal particle has a ratio of a short diameter relative to a long diameter of about 1/50 to about ?. Also a thermoplastic resin composition includes a thermoplastic resin, a plate-shaped second metal particle, and plate-shaped mica, wherein the plate-shaped mica is included in an amount of about 0.01 parts by weight to about 4.9 parts by weight based on about 100 parts by weight of the thermoplastic resin. In addition a thermoplastic resin composition includes a thermoplastic resin, a plate-shaped third metal particle or a spherical fourth metal particle, and thermally expandable particulate, wherein the thermally expandable particulate includes a polymer particle including a hydrocarbon foamable compound therein.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: February 24, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Young-Sin Kim, Doo-Han Ha, Jin-Young Huh, Hye-Young Kim, Ywan-Hee Lee
  • Patent number: 8946337
    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: Grant
    Filed: June 28, 2012
    Date of Patent: February 3, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Hyung-Tak Lee, Doo-Han Ha, Jin-Kyung Cho, Young-Chul Kwon
  • Patent number: 8907013
    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: Grant
    Filed: December 29, 2010
    Date of Patent: December 9, 2014
    Assignee: Cheil Industries Inc.
    Inventors: Doo-Han Ha, Young-Chul Kwon
  • Patent number: 8835558
    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: Grant
    Filed: December 18, 2009
    Date of Patent: September 16, 2014
    Assignee: 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
  • Patent number: 8829091
    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: Grant
    Filed: October 10, 2011
    Date of Patent: September 9, 2014
    Assignee: Cheil Industries Inc.
    Inventors: Doo Han Ha, Young Chul Kwon
  • Publication number: 20140142212
    Abstract: A transparent thermoplastic resin composition includes (A) a methylmethacrylate-styrene-acrylonitrile-butadiene copolymer (g-MABS) which is a graft resin having a core-shell structure and including butadiene with an average particle size of about 700 to about 1800 ?; (B) a methylmethacrylate-styrene-acrylonitrile-butadiene copolymer (g-MABS) which is a graft resin having a core-shell structure and including butadiene with an average particle size of about 2000 to about 4000 ?; (C) dimethyl polysiloxane; and (D) a base resin which includes (meth)acrylic acid alkyl ester in an amount of about 40 to about 100% by weight.
    Type: Application
    Filed: April 19, 2013
    Publication date: May 22, 2014
    Applicant: Cheil Industries Inc.
    Inventors: Dong Hui CHU, Doo Han HA, In Chol KIM
  • Patent number: 8618191
    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: Grant
    Filed: September 21, 2011
    Date of Patent: December 31, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Hee-Seok Na, Doo-Han Ha, Young-Sin Kim, Ji-Eun Park
  • Patent number: 8618209
    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: Grant
    Filed: December 20, 2011
    Date of Patent: December 31, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Ywan-Hee Lee, Young-Seok Chang, Jin-Kyung Cho, Doo-Han Ha, Jin-Young Huh
  • Patent number: 8546469
    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: October 1, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Ywan-Hee Lee, Doo-Han Ha, Jin-Young Huh, Young-Seok Chang
  • Publication number: 20130231437
    Abstract: The present invention relates to a thermoplastic resin composition, comprising: a base resin comprising (A) a polyphenylene ether resin and (B) an aromatic vinyl-based resin, and (C) glass fibers, wherein the (C) glass fibers include (C1) chopped glass fibers and (C2) milled glass fibers.
    Type: Application
    Filed: April 19, 2013
    Publication date: September 5, 2013
    Applicant: Cheil Industries Inc.
    Inventors: Jin Kyung CHO, Do Hoon CHANG, Jin Young HUH, Ywan Hee LEE, Doo Han HA
  • Publication number: 20130231414
    Abstract: Provided are a polycarbonate resin composition that includes (A) a polycarbonate resin, (B) a first rubber modified vinyl-based graft copolymer including a first rubber having an average particle diameter of about 6 to about 20 ?m and a span of about 0.8 to about 2.8 and (C) a second rubber modified vinyl-based graft copolymer including a second rubber having an average particle diameter of about 0.1 to about 0.5 ?m, and a molded product using the same.
    Type: Application
    Filed: April 19, 2013
    Publication date: September 5, 2013
    Applicant: Cheil Industries Inc.
    Inventors: Jung-Eun PARK, Doo-Han HA