Patents by Inventor Hyun-kyung Yoon
Hyun-kyung Yoon 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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Patent number: 11918632Abstract: The present invention provides a method for preventing or treating liver cancer in a subject comprising administrating at least one selected from the group consisting of an Ssu72 peptide, a polynucleotide encoding the Ssu72 peptide and an expression vector containing the polynucleotide to the subject.Type: GrantFiled: July 25, 2022Date of Patent: March 5, 2024Assignees: CUROGEN TECHNOLOGY CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITYInventors: Chang Woo Lee, Jin Kwan Lee, Hyun Soo Kim, Jae-kyung Kim, Joon Sup Yoon
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Patent number: 11249060Abstract: The present invention relates to a method for quantitatively analyzing Cl, remaining after synthesis, in zinc ferrite synthesized using chloride precursors such as zinc chloride and iron chloride, and provides a method capable of using, in a quantitative analysis method of Cl remaining after synthesis of an inorganic material, AQF-IC, which has been used only in the quantitative analysis of an organic sample since gaseous Cl, discharged after burning zinc ferrite in an automatic quick furnace (AQF) by using an Sn capsule and tungsten oxide (WO3), is analyzed through ion chromatography (IC).Type: GrantFiled: July 16, 2018Date of Patent: February 15, 2022Inventors: Sangwoo Kim, Hyun Kyung Yoon, Sumin Na, Jieun Kim, Hyun Woo Nho
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Publication number: 20200333303Abstract: The present invention relates to a method for quantitatively analyzing Cl, remaining after synthesis, in zinc ferrite synthesized using chloride precursors such as zinc chloride and iron chloride, and provides a method capable of using, in a quantitative analysis method of Cl remaining after synthesis of an inorganic material, AQF-IC, which has been used only in the quantitative analysis of an organic sample since gaseous Cl, discharged after burning zinc ferrite in an automatic quick furnace (AQF) by using an Sn capsule and tungsten oxide (WO3), is analyzed through ion chromatography (IC).Type: ApplicationFiled: July 16, 2018Publication date: October 22, 2020Applicant: LG Chem, Ltd.Inventors: Sangwoo Kim, Hyun Kyung Yoon, Sumin Na, Jieun Kim, Hyun Woo Nho
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Publication number: 20180230316Abstract: The present invention relates to an anti-reflective film comprising: a hard coating layer and a low refractive layer which comprises a binder resin comprising a cross-linked polymer of a photopolymerizable compound, two or more kinds of fluorine-containing compounds comprising photoreactive functional groups, and polysilsesquioxane substituted by one or more reactive functional groups; and inorganic fine particles dispersed in the binder resin.Type: ApplicationFiled: March 10, 2017Publication date: August 16, 2018Inventors: Boo Kyung KIM, Yeong Rae CHANG, Dong Hyun KIM, Hyun Kyung YOON, Seok Hoon JANG, Yu Ra LEE, Jin Seok BYUN
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Patent number: 7740812Abstract: The present invention relates to a method and an apparatus for continuously separating aromatic dialdehyde from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene. The method for continuously separating aromatic dialdehyde includes the steps of congealing aromatic dialdehyde by cooling the gas-phase reaction mixture including the aromatic dialdehyde, which is obtained by gas-phase oxidation of dimethylbenzene, to 5-70° C. and separating the congealed aromatic dialdehyde from the remaining reaction mixture. Using the method and apparatus in accordance with the present invention, aromatic dialdehyde can be effectively and selectively separated from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene in high yield.Type: GrantFiled: June 2, 2008Date of Patent: June 22, 2010Assignee: LG Chem, Ltd.Inventors: Jong-Hyun Chae, Won-Ho Lee, Dong-Il Lee, Hyun-Kyung Yoon
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Patent number: 7696387Abstract: The present invention relates to a novel method for preparing a catalyst for partial oxidation of methylbenzenes, comprising, (a) a step of preparing a solution or slurry of the compounds comprising tungsten; (b) a step of supporting the solution or slurry obtained in the step (a) on inorganic carrier; (c) a step of drying the catalyst obtained in the step (b); and (d) a step of calcining the dried catalyst obtained in the step (c), characterized in that the ratio of the pore volume of inorganic carrier and the volume of the solution or slurry in the step (b) is 1:0.9˜1.1, and the catalyst provides superior aromatic aldehydes selectivity to those prepared by the conventional impregnation or heat evaporation method over a wide range of conversion rate.Type: GrantFiled: May 17, 2006Date of Patent: April 13, 2010Assignee: LG Chem, Ltd.Inventors: Won Ho Lee, Dong Il Lee, Jong Hyun Chae, Hyun Kyung Yoon
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Patent number: 7538253Abstract: The present invention relates to a novel method for preparing a catalyst of the formula (1), WOx wherein, W represents tungsten atom, O represents oxygen atom x represents a value determined by oxidative state of W, for partial oxidation of methylbenzenes, the method comprising: (a) a step of preparing tungsten oxide slurry by wet milling; (b) a step of supporting the slurry obtained in the step (a) on fire-resistance inorganic carrier by impregnation; (c) a step of drying the catalyst obtained in the step (b); and (d) a step of calcining the dried catalyst obtained in the step (c), and can reduce the reaction temperature on the basis of equivalent yield in the preparation of corresponding aromatic aldehyde from methylbenzenes since the catalyst has increased the surface areas compared to the conventional one, and thus has high conversion rate.Type: GrantFiled: November 21, 2006Date of Patent: May 26, 2009Assignee: LG Chem Ltd.Inventors: Won Ho Lee, Dong Il Lee, Jong Hyun Chae, Hyun Kyung Yoon
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Publication number: 20080302132Abstract: The present invention relates to a method and an apparatus for continuously separating aromatic dialdehyde from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene. The method for continuously separating aromatic dialdehyde includes the steps of congealing aromatic dialdehyde by cooling the gas-phase reaction mixture including the aromatic dialdehyde, which is obtained by gas-phase oxidation of dimethylbenzene, to 5-70° C. and separating the congealed aromatic dialdehyde from the remaining reaction mixture. Using the method and apparatus in accordance with the present invention, aromatic dialdehyde can be effectively and selectively separated from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene in high yield.Type: ApplicationFiled: June 2, 2008Publication date: December 11, 2008Inventors: Jong-Hyun Chae, Won-Ho Lee, Dong-Il Lee, Hyun-Kyung Yoon
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Patent number: 7429682Abstract: A catalyst for gas phase oxidation of methylbenzenes in the presence of molecular oxygen to produce corresponding aromatic aldehydes, a method for preparing the catalyst, and a method for producing aromatic aldehydes from methylbenzenes by using the catalyst. The catalyst comprises a compound represented by the following formula (1): WaXbYcOx ??(1) wherein W represents a tungsten atom, X represents one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs, Y represents one or more elements selected from the group consisting of Fe, Co, Ni, Cu, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Sn, Mg, Ca, Sr, and Ba, O stands for an oxygen atom, and the ratio of a:b:c is 12:0.001˜1:0˜5.Type: GrantFiled: November 22, 2006Date of Patent: September 30, 2008Assignee: LG Chem, Ltd.Inventors: Won Ho Lee, Hyun Kyung Yoon, Dong Il Lee, Jong Hyun Chae, Ji Hyang Son, In Kyu Park, Won Jae Lee
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Patent number: 7393983Abstract: The present invention relates to a method and an apparatus for continuously separating aromatic dialdehyde from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene. The method for continuously separating aromatic dialdehyde includes the steps of congealing aromatic dialdehyde by cooling the gas-phase reaction mixture including the aromatic dialdehyde, which is obtained by gas-phase oxidation of dimethylbenzene, to 5-70° C. and separating the congealed aromatic dialdehyde from the remaining reaction mixture. Using the method and apparatus in accordance with the present invention, aromatic dialdehyde can be effectively and selectively separated from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene in high yield.Type: GrantFiled: May 9, 2006Date of Patent: July 1, 2008Assignee: LG Chem, Ltd.Inventors: Jong-Hyun Chae, Won-Ho Lee, Dong-Il Lee, Hyun-Kyung Yoon
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Publication number: 20080021248Abstract: A catalyst for gas phase oxidation of methylbenzenes in the presence of molecular oxygen to produce corresponding aromatic aldehydes, a method for preparing the catalyst, and a method for producing aromatic aldehydes from methylbenzenes by using the catalyst. The catalyst comprises a compound represented by the following formula (1): WaXbYcOx ??(1) wherein W represents a tungsten atom, X represents one or more alkali metals selected from the group consisting of Li, Na, K, Rb, and Cs, Y represents one or more elements selected from the group consisting of Fe, Co, Ni, Cu, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Sn, Mg, Ca, Sr, and Ba, O stands for an oxygen atom, and the ratio of a:b:c is 12:0.001˜1:0˜5.Type: ApplicationFiled: November 22, 2006Publication date: January 24, 2008Inventors: Won Ho Lee, Hyun Kyung Yoon, Dong Il Lee, Jong Hyun Chae, Ji Hyang Son, In Kyu Park, Won Jae Lee
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Patent number: 7183442Abstract: The present invention relates to a method for preparing high-purity terephthalaldehyde from terephthalaldehyde crystal containing impurities by recrystallization using an antisolvent. Low-purity terephthalaldehyde prepared by a conventional method, which contains a small amount of impurities, is dissolved in a solvent and recrystallized using water as antisolvent to obtain high-purity terephthalaldehyde. The invention is significantly advantageous in using water only as antisolvent. Also, the purification process takes short time and is economical and environment-friendly.Type: GrantFiled: December 6, 2005Date of Patent: February 27, 2007Assignee: LG Chem, Ltd.Inventors: Hyun-kyung Yoon, Won-ho Lee, Jong-hyun Chae, Dong-il Lee
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Publication number: 20060276678Abstract: The present invention relates to a method and an apparatus for continuously separating aromatic dialdehyde from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene. The method for continuously separating aromatic dialdehyde includes the steps of congealing aromatic dialdehyde by cooling the gas-phase reaction mixture including the aromatic dialdehyde, which is obtained by gas-phase oxidation of dimethylbenzene, to 5-70° C. and separating the congealed aromatic dialdehyde from the remaining reaction mixture. Using the method and apparatus in accordance with the present invention, aromatic dialdehyde can be effectively and selectively separated from a reaction mixture obtained by gas-phase oxidation of dimethylbenzene in high yield.Type: ApplicationFiled: May 9, 2006Publication date: December 7, 2006Applicant: LG Chem, Ltd.Inventors: Jong-Hyun Chae, Won-Ho Lee, Dong-Il Lee, Hyun-Kyung Yoon
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Publication number: 20060167320Abstract: The present invention relates to a method for preparing high-purity terephthalaldehyde from terephthalaldehyde crystal containing impurities by recrystallization using an antisolvent. Low-purity terephthalaldehyde prepared by a conventional method, which contains a small amount of impurities, is dissolved in a solvent and recrystallized using water as antisolvent to obtain high-purity terephthalaldehyde. The invention is significantly advantageous in using water only as antisolvent. Also, the purification process takes short time and is economical and environment-friendly.Type: ApplicationFiled: December 6, 2005Publication date: July 27, 2006Inventors: Hyun-kyung Yoon, Won-ho Lee, Jong-hyun Chae, Dong-il Lee
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Publication number: 20060094906Abstract: Provided is a catalyst for partial oxidation of methylbenzenes comprising the compound represented by the following formula 1 and, optionally, a fire-resistant inorganic support: WOx??(1) where W stands for a tungsten atom, O stands for an oxygen atom and x is a number determined by the oxidation state of W. Also provided is a method for producing aromatic aldehydes from partial oxidation of methylbenzenes in gas phase using molecular oxygen using the afore-mentioned catalyst. The catalyst of the present invention can be prepared easily compared with conventional multi-component oxide catalysts. And, aromatic aldehydes can be produced from methylbenzenes with high selectivity and yield.Type: ApplicationFiled: October 21, 2005Publication date: May 4, 2006Inventors: Won-ho Lee, Dong-il Lee, Jong-hyun Chae, Hyun-kyung Yoon