Patents by Inventor Jun Ho CHOE
Jun Ho CHOE 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).
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Publication number: 20260242225Abstract: The present invention relates to a carbon nanotube dispersion exhibiting low viscosity and little change in viscosity over time, which includes carbon nanotubes, a dispersant, and a dispersion medium, wherein the dispersant contains a first dispersant and a second dispersant in a weight ratio of 100:10 to 90, the first dispersant is a dispersant containing an N atom, the second dispersant is a compound containing a sulfonic group, a hydroxyl group, and an aromatic ring in a molecular structure, and the carbon nanotubes and the dispersant are present in a weight ratio of 100:25 to 500.Type: ApplicationFiled: July 1, 2024Publication date: August 20, 2026Applicant: LG CHEM, LTD.Inventors: Yu Jin WOO, Young Jin JANG, Jae Moon JUN, Jun Ho CHOE, Ki Youl YOON
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Patent number: 12692383Abstract: The present disclosure relates to a resin composition including a base resin including a first graft copolymer, a second graft copolymer and a maleimide-based copolymer; a polyolefin elastomer; a polyolefin graft copolymer; and a polyolefin wax. The present disclosure also relates to a molded product molded from the resin composition.Type: GrantFiled: September 28, 2021Date of Patent: July 28, 2026Assignee: LG CHEM, LTD.Inventors: Dae San Jung, Jun Ho Choe, Seong Lyong Kim, Ho Namgung, Seok Hee Jo
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Patent number: 12679968Abstract: The present invention relates to a thermoplastic resin composition including a diene-based graft polymer; a first polymer including a vinyl cyanide-based monomer and an alkyl-substituted styrene-based monomer; a second polymer including a vinyl cyanide-based monomer, an aromatic vinyl-based monomer, and a (meth)acrylate-based monomer; a third polymer including a vinyl cyanide-based monomer and an alkyl-unsubstituted styrene-based monomer and having a weight-average molecular weight of 80,000 to 220,000 g/mol; a fourth polymer including a vinyl cyanide-based monomer and an alkyl-unsubstituted styrene-based monomer and having a weight-average molecular weight of 1,500,000 to 5,000,000 g/mol; and a fifth polymer including an olefin-based monomer and having a density of 970 to 1,000 kg/m3 measured in accordance with ASTM D1505, wherein the fifth polymer is included in 0.10 to 3.Type: GrantFiled: September 14, 2022Date of Patent: July 14, 2026Assignee: LG CHEM, LTD.Inventors: Jun Ho Choe, Ho Namgung, Seong Lyong Kim, Dae San Jung
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Patent number: 12006428Abstract: The present invention provides a thermoplastic resin composition which comprises: a first polymer formed by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; a second polymer comprising an aromatic vinyl-based monomer unit and a vinyl cyanide-based monomer unit; a third polymer formed by graft polymerization of an olefin-based polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; and a fourth polymer comprising an olefin-based monomer unit and having a density of 0.92 to 0.94 g/cm3 as measured in accordance with ASTM D1505, a softening point of 100 to 120° C. as measured in accordance with ASTM D1525, and a melt flow index of 5 to 7 g/10 min as measured in accordance with ASTM D1238 at 190° C. and 2.16 kg, wherein the thermoplastic resin composition comprises the fourth polymer at 1 to 10 wt %.Type: GrantFiled: October 6, 2020Date of Patent: June 11, 2024Assignee: LG CHEM, LTD.Inventors: Jun Ho Choe, Seung Cheol Ryoo, Seong Lyong Kim, Dae San Jung
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Publication number: 20240132713Abstract: The present invention relates to a thermoplastic resin composition including a diene-based graft polymer; a first polymer including a vinyl cyanide-based monomer and an alkyl-substituted styrene-based monomer; a second polymer including a vinyl cyanide-based monomer, an aromatic vinyl-based monomer, and a (meth)acrylate-based monomer; a third polymer including a vinyl cyanide-based monomer and an alkyl-unsubstituted styrene-based monomer and having a weight-average molecular weight of 80,000 to 220,000 g/mol; a fourth polymer including a vinyl cyanide-based monomer and an alkyl-unsubstituted styrene-based monomer and having a weight-average molecular weight of 1,500,000 to 5,000,000 g/mol; and a fifth polymer including an olefin-based monomer and having a density of 970 to 1,000 kg/m3 measured in accordance with ASTM D1505, wherein the fifth polymer is included in 0.10 to 3.Type: ApplicationFiled: September 14, 2022Publication date: April 25, 2024Applicant: LG CHEM, LTD.Inventors: Jun Ho CHOE, Ho NAMGUNG, Seong Lyong KIM, Dae San JUNG
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Publication number: 20230210598Abstract: A surgical skill training system includes: a data collecting unit configured to collect actual surgical skill data on a patient of an operating surgeon; an image providing server configured to generate a 3-dimensional (3D) surgical image for surgical skill training, based on the actual surgical skill data; and a user device configured to display the 3D surgical image, wherein the image providing server includes: a patient image generating unit configured to generate a patient image, based on patient information of the patient; a surgical stage classifying unit configured to classify the actual surgical skill data into actual surgical skill data for each surgical stage performed by the operating surgeon; and a 3D image generating unit configured to generate the 3D surgical image by using the patient image, and feature information detected from the actual surgical skill data.Type: ApplicationFiled: April 20, 2021Publication date: July 6, 2023Applicant: SAMSUNG LIFE PUBLIC WELFARE FOUNDATIONInventor: Jun Ho CHOE
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Publication number: 20230174770Abstract: The present disclosure relates to a resin composition including a base resin including a first graft copolymer, a second graft copolymer and a maleimide-based copolymer; a polyolefin elastomer; a polyolefin graft copolymer; and a polyolefin wax. The present disclosure also relates to a molded product molded from the resin composition.Type: ApplicationFiled: September 28, 2021Publication date: June 8, 2023Applicant: LG CHEM, LTD.Inventors: Dae San JUNG, Jun Ho CHOE, Seong Lyong KIM, Ho NAMGUNG, Seok Hee JO
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Publication number: 20220177688Abstract: The present invention provides a thermoplastic resin composition which comprises: a first polymer formed by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; a second polymer comprising an aromatic vinyl-based monomer unit and a vinyl cyanide-based monomer unit; a third polymer formed by graft polymerization of an olefin-based polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer; and a fourth polymer comprising an olefin-based monomer unit and having a density of 0.92 to 0.94 g/cm3 as measured in accordance with ASTM D1505, a softening point of 100 to 120° C. as measured in accordance with ASTM D1525, and a melt flow index of 5 to 7 g/10 min as measured in accordance with ASTM D1238 at 190° C. and 2.16 kg, wherein the thermoplastic resin composition comprises the fourth polymer at 1 to 10 wt %.Type: ApplicationFiled: October 6, 2020Publication date: June 9, 2022Inventors: Jun Ho CHOE, Seung Cheol RYOO, Seong Lyong KIM, Dae San JUNG