Patents by Inventor Eun-Ho SOHN
Eun-Ho SOHN 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: 20240194372Abstract: The present invention relates to an insulating gas used for electrical insulation or arc extinguishing of an electrical device, and an electrical device for insulating electricity using the same. The insulating gas of the present invention, which may replace SF6 gas, consists of a mixed gas of trifluoromethyl trifluorovinyl ether (CF3OCFCF2) and a carrier gas. The insulating gas of the present invention has the characteristics of a low boiling point, high dielectric strength, low toxicity, and a low global warming potential (GWP=1 or less), and thus may replace SF6, and the low global warming potential with no loss of high insulating capacity and arc extinguishing capability may reduce greenhouse gases.Type: ApplicationFiled: October 25, 2021Publication date: June 13, 2024Applicants: KOREA ELECTRO TECHNOLOGY RESEARCH INSTITUTE, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Ki Dong SONG, Yeon Ho OH, Hyun Jae JANG, In Joon PARK, Won Wook SO, Shin Hong YOOK, Sang Goo LEE, Hong suk KANG, Ju Hyeon KIM, Ji Hoon BAIK, Eun Ho SOHN, Myoung Sook LEE, Bong Jun CHANG
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Publication number: 20240101810Abstract: The present invention relates to a composition for forming a composite polymer film, a method for preparing the composition for forming a composite polymer film, a composite polymer film and a method for preparing the composite polymer film. The composition for forming a composite polymer film comprises: a fluorine-based polymer solution comprising a fluorine-based polymer; and polyvinylidene fluoride nanoparticles dispersed in the fluorine-based polymer solution. The method for preparing the composition for forming a composite polymer film comprises the steps of: preparing a fluorine-based polymer solution comprising a fluorine-based polymer; and dispersing polyvinylidene fluoride nanoparticles in the fluorine-based polymer solution. The composite polymer film comprises: a polymer matrix formed from a fluorine-based polymer; and polyvinylidene fluoride nanoparticles dispersed in the polymer matrix.Type: ApplicationFiled: September 4, 2020Publication date: March 28, 2024Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Eun Ho SOHN, Shin Hong YOOK, Hong Suk KANG, In Joon PARK, Sang Goo LEE, Soo Bok LEE, Won Wook SO, Hyeon Jun HEO, Dong Je HAN, Seon Woo KIM
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Publication number: 20230278944Abstract: The present invention relates to a method for preparing a perfluorodialkyl ether, comprising the steps of: (A) preparing a perfluorodialkyl ether from a compound represented by Formula 1 in the presence of a metal fluoride; and (B) isolating the perfluorodialkyl ether, and to an apparatus for preparing perfluorodialkyl ether, comprising: a reactor for preparing a perfluorodialkyl ether from a compound represented by Formula 1 in the presence of a metal fluoride; a reactant supplier for introducing the compound represented by Formula 1 into the reactor; and a discharge unit for discharging the perfluorodialkyl ether from the upper portion of the reactor.Type: ApplicationFiled: July 26, 2021Publication date: September 7, 2023Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTEInventors: Sang Goo LEE, In Joon PARK, Won Wook SO, Shin Hong YOOK, Hong Suk KANG, Eun Ho SOHN, Ki Dong SONG, Yeon Ho OH, Hyun Jae JANG
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Publication number: 20230100403Abstract: According to an embodiment of the present invention, provided is a process for polymerizing molecular weight—adjustable polymer, comprising: a reactant supply step of supplying a gaseous monomer, a surfactant, and an initiator; a polymerization reaction step of performing a polymerization reaction in which the monomer, the surfactant, and the initiator participate; and a product discharging step of discharging the polymer compound produced by the polymerization reaction, wherein the flow rate of the supplied initiator is inversely proportional to the molecular weight of the polymer compound, and the molecular weight of the polymer compound produced by the polymerization reaction is adjusted by controlling the flow rate of the initiator.Type: ApplicationFiled: February 22, 2021Publication date: March 30, 2023Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Hong Suk KANG, In Joon PARK, Shin Hong YOOK, Eun-Ho SOHN, Sang Goo LEE, Soo Bok LEE, Won Wook SO
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Publication number: 20210395424Abstract: Disclosed is a blood-compatible polymer represented by Formula 1. A polymer obtained by grafting a fluorinated methacrylate onto a polyvinylidene fluoride copolymer and provided in one aspect of the present invention is a polymer with blood compatibility, and may provide a blood-compatible material with hydrophobicity. In addition, it is possible to provide a material with controlled contact angle and surface energy properties by controlling the hydrogen fluoride length of the fluorinated methacrylate monomer for modification. Furthermore, it is possible to provide coating with controlled surface properties and blood compatibility through a simple process. Furthermore, it is possible to provide a freestanding polymer film with blood compatibility.Type: ApplicationFiled: June 18, 2021Publication date: December 23, 2021Inventors: Eun Ho Sohn, Dong Je Han, Hyeon Jun Heo, Jeong Kim, In Joon Park, Jong Wook Ha, Soo Bok Lee, Hong Suk Kang, Sang Goo Lee, Shin Hong Yook
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Patent number: 10934167Abstract: The present invention relates to a preparation method of trifluoroamine oxide comprising the steps of producing an intermediate product by reacting nitrogen trifluoride and nitrous oxide in the presence of a reaction catalyst; and producing trifluoroamine oxide by reacting the intermediate product with sodium fluoride in vacuum condition up to 100 mmHg.Type: GrantFiled: May 31, 2019Date of Patent: March 2, 2021Assignees: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, SK-MATERIALS CO., LTD.Inventors: Hong Suk Kang, In Joon Park, Soo Bok Lee, Won Wook So, Shin Hong Yook, Eun-ho Sohn, Beom Sik Kim, Junghun Kwak, Byunghyang Kwon
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Publication number: 20210047184Abstract: The present invention relates to a preparation method of trifluoroamine oxide which comprises the steps of producing an intermediate product by reacting nitrogen trifluoride and nitrous oxide in the presence of a reaction catalyst wherein the unreacted gas containing nitrogen (N2) produced in the course of the reaction is removed and instead nitrogen trifluoride and nitrous oxide are injected additionally; and producing trifluoroamine oxide by reacting the intermediate product with sodium fluoride.Type: ApplicationFiled: May 31, 2019Publication date: February 18, 2021Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, SK-MATERIALS CO., LTD.Inventors: Hong Suk Kang, In Joon Park, Soo Bok Lee, Won Wook So, Shin Hong Yook, Eun-ho Sohn, Beom Sik Kim, Junghun Kwak, Byunghyang Kwon
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Publication number: 20200407223Abstract: The present invention relates to a preparation method of trifluoroamine oxide comprising the steps of producing an intermediate product by reacting nitrogen trifluoride and nitrous oxide in the presence of a reaction catalyst; and producing trifluoroamine oxide by reacting the intermediate product with sodium fluoride in vacuum condition up to 100 mmHg.Type: ApplicationFiled: May 31, 2019Publication date: December 31, 2020Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, SK-MATERIALS CO., LTD., SK-MATERIALS CO., LTD.Inventors: Hong Suk Kang, In Joon Park, Soo Bok Lee, Won Wook So, Shin Hong Yook, Eun-ho Sohn, Beom Sik Kim, Junghun Kwak, Byunghyang Kwon
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Publication number: 20200385563Abstract: In an aspect of the present invention, a fluoropolymer represented by formula 1 is provided. The fluoropolymer provided in one aspect of the present invention can obtain low surface energy and high light transmittance, and thus can be applied to various applications requiring such properties. In particular, when the fluoropolymer is coated on glass, the surface energy can be lowered to 19 mN/m or less and the light transmittance can be increased by 2% or more. At the same time, it has the effect of exhibiting excellent pencil hardness. In addition, the fluoropolymer provided in one aspect of the present invention can be applied as a surface coating and membrane material of various products due to its high solubility in general organic solvents, despite having very low surface energy during coating.Type: ApplicationFiled: June 26, 2020Publication date: December 10, 2020Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Eun-Ho SOHN, In Joon PARK, Soo Bok LEE, Jong-Wook HA