Patents by Inventor Sang Deuk Lee
Sang Deuk Lee 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: 12207523Abstract: A transparent touch display apparatus includes a light-emitting device on an emission area of a device substrate and a touch electrode on a transmission area of the device substrate. The light-emitting device includes a first electrode, a light-emitting layer and a second electrode. The touch electrode includes the same material as the second electrode. An encapsulating element is disposed on the light-emitting device and the touch electrode. An over-coat layer is disposed between the device substrate and the light-emitting device, and between the device substrate and the touch electrode. A first link wire electrically connected to the second electrode of the light-emitting device and a second link wire electrically connected to the touch electrode are disposed between the device substrate and the over-coat layer.Type: GrantFiled: December 22, 2021Date of Patent: January 21, 2025Assignee: LG Display Co., Ltd.Inventors: Hwi Deuk Lee, Yang Sik Lee, Se Eung Lee, Sang Hyuck Bae
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Patent number: 11572263Abstract: According to one embodiment of the present invention, a tube opening and closing device capable of opening and closing a lid of a tube and comprising a container, a lid coupled to the container so as to enable the container to be blocked, and a joint part for connecting the container and a first side of the lid comprises: a tube supporting rack having a plurality of openings formed on one surface thereof, wherein the containers of the tubes can be inserted into each of the plurality of openings; an opening and closing part positioned at an upper part of the tube supporting rack, rotating around a first rotary shaft and having a coupling groove in which a second side of the lid, which faces the first side of the tube, can be accommodated; and a driving part for rotating the opening and closing part, wherein the lid can be opened and closed with respect to the container through the rotation of the opening and closing part.Type: GrantFiled: April 26, 2017Date of Patent: February 7, 2023Assignee: BIOINFRA CO., LTD.Inventor: Sang Deuk Lee
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Publication number: 20190135605Abstract: According to one embodiment of the present invention, a tube opening and closing device capable of opening and closing a lid of a tube and comprising a container, a lid coupled to the container so as to enable the container to be blocked, and a joint part for connecting the container and a first side of the lid comprises: a tube supporting rack having a plurality of openings formed on one surface thereof, wherein the containers of the tubes can be inserted into each of the plurality of openings; an opening and closing part positioned at an upper part of the tube supporting rack, rotating around a first rotary shaft and having a coupling groove in which a second side of the lid, which faces the first side of the tube, can be accommodated; and a driving part for rotating the opening and closing part, wherein the lid can be opened and closed with respect to the container through the rotation of the opening and closing part.Type: ApplicationFiled: April 26, 2017Publication date: May 9, 2019Applicant: BIOINFRA CO., LTD.Inventor: Sang Deuk LEE
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Patent number: 10138188Abstract: Disclosed is a novel catalyst for producing a methanol precursor. The use of the catalyst enables the production of a methanol precursor and methanol with high efficiency under low temperature and low pressure conditions. Also disclosed are a methanol precursor produced using the catalyst and methanol produced using the methanol precursor.Type: GrantFiled: July 19, 2017Date of Patent: November 27, 2018Assignee: Korea Institute of Science and TechnologyInventors: Hyun Joo Lee, Hyunah Choo, Seungmi Yeo, Tran Huyen Dang, Jieon Lee, Soon Hyeok Hong, Dabon Lee, Sang Deuk Lee
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Patent number: 10125344Abstract: The apparatus includes: a pretreatment tank where biomass and a first acid solution are stirred to extract sugar components from the biomass; a hydrolysis tank where water is added to the pretreated mixture transferred from the pretreatment tank such that the concentration of the acid is reduced and the sugar components are hydrolyzed to produce an acid hydrolyzate; a first sugar-acid separation tank where the acid hydrolyzate is separated into a second acid solution and a first hydrolyzate; a second sugar-acid separation tank where the first hydrolyzate is separated into a third acid solution and a second hydrolyzate; a fermentation tank where the second hydrolyzate is fermented to produce bioenergy; and an acid solution concentration tank where a mixture of the second acid solution transferred from the first sugar-acid separation tank and the third acid solution transferred from the second sugar-acid separation tank is concentrated to a higher level for reuse.Type: GrantFiled: September 21, 2015Date of Patent: November 13, 2018Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Young Soon Um, Hong Gon Kim, Byoung Sung Ahn, Sang Deuk Lee, Chang Soo Kim, Dong Jin Suh, Kyung Min Lee
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Publication number: 20180179130Abstract: Disclosed is a novel catalyst for producing a methanol precursor. The use of the catalyst enables the production of a methanol precursor and methanol with high efficiency under low temperature and low pressure conditions. Also disclosed are a methanol precursor produced using the catalyst and methanol produced using the methanol precursor.Type: ApplicationFiled: July 19, 2017Publication date: June 28, 2018Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hyun Joo LEE, Hyunah CHOO, Seungmi YEO, Tran Huyen DANG, Jieon LEE, Soon Hyeok HONG, Dabon LEE, Sang Deuk LEE
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Publication number: 20170218322Abstract: The apparatus includes: a pretreatment tank where biomass and a first acid solution are stirred to extract sugar components from the biomass; a hydrolysis tank where water is added to the pretreated mixture transferred from the pretreatment tank such that the concentration of the acid is reduced and the sugar components are hydrolyzed to produce an acid hydrolyzate; a first sugar-acid separation tank where the acid hydrolyzate is separated into a second acid solution and a first hydrolyzate; a second sugar-acid separation tank where the first hydrolyzate is separated into a third acid solution and a second hydrolyzate; a fermentation tank where the second hydrolyzate is fermented to produce bioenergy; and an acid solution concentration tank where a mixture of the second acid solution transferred from the first sugar-acid separation tank and the third acid solution transferred from the second sugar-acid separation tank is concentrated to a higher level for reuse.Type: ApplicationFiled: September 21, 2015Publication date: August 3, 2017Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Young Soon UM, Hong Gon KIM, Byoung Sung AHN, Sang Deuk LEE, Chang Soo KIM, Dong Jin SUH, Kyung Min LEE
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Patent number: 9638404Abstract: The present invention relates to a portable flashlight, and more particularly to a portable flashlight which has a wireless switching function for turning on or off the flashlight by means of a radio signal in addition to a manual switch provided on the outside of the flashlight. The flashlight can not only be turned on or off by means of an external radio signal, but also be used in various ways such as turning on a part of the lamp or intermittently turning on the flashlight. A flashlight according to the present invention includes a power supply part, a lamp for generating a light by means of the power from the power supply part, and a manual switch connected between the lamp and the power supply part for switching the flashlight, characterized by further including a radio switch in addition to or instead of the manual switch, wherein the radio switch consists of a radio receiver for receiving an external radio signal to operate the radio switch.Type: GrantFiled: May 1, 2013Date of Patent: May 2, 2017Inventor: Sang Deuk Lee
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Patent number: 9518035Abstract: A method for preparing glycidol using glycerol includes mixing glycerol with urea in the presence of at least one zinc-based catalyst selected from the group consisting of Zn(NO3)2, ZnCl2, ZnO and Zn(OAc)2 under a pressure of 0.5-10 kPa at a temperature of 100-170° C. to obtain glycerol carbonate; filtering the glycerol carbonate mixed with the zinc-based catalyst through an adsorbent including a polymer resin coordinated with amine groups to separate the zinc-based catalyst and glycerol carbonate from each other; and carrying out reaction of the glycerol carbonate separated from the zinc-based catalyst in the presence of an anion alkali metal salt catalyst that is Na, K, Rb, Cs or a mixture thereof containing at least one anion selected from the group consisting of Cl?, Br?, I?, NO3?, NO2? and acetate under a pressure of 0.13-6.67 kPa at a temperature of 140-250° C. to obtain glycidol.Type: GrantFiled: February 4, 2016Date of Patent: December 13, 2016Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hyun Joo Lee, Byoung Sung Ahn, Sang Deuk Lee, Ji Sik Choi, Hyejeong Lee, Hye Jin Lee
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Patent number: 9475995Abstract: Disclosed are a gas to liquids (GTL)—floating production, storage and offloading (FPSO) system that can be used in offshore oil-gas fields or stranded gas fields and a method for producing synthetic fuel using the same. More particularly, the disclosure relates to a GTL-FPSO system capable of producing liquid synthetic fuel from gas extracted from stranded gas fields or associated gas extracted from oil-gas fields, including a reforming reactor and a liquid hydrocarbon producer, and a method for producing the same.Type: GrantFiled: January 27, 2016Date of Patent: October 25, 2016Assignee: Korea Institute of Science and TechnologyInventors: Dong Ju Moon, Yun Ju Lee, Jung Shik Kang, Moonju Park, Sojung Kim, Sang Deuk Lee, Hyunjoo Lee
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Publication number: 20160244419Abstract: A method for preparing glycidol using glycerol includes mixing glycerol with urea in the presence of at least one zinc-based catalyst selected from the group consisting of Zn(NO3)2, ZnCl2, ZnO and Zn(OAc)2 under a pressure of 0.5-10 kPa at a temperature of 100-170° C. to obtain glycerol carbonate; filtering the glycerol carbonate mixed with the zinc-based catalyst through an adsorbent including a polymer resin coordinated with amine groups to separate the zinc-based catalyst and glycerol carbonate from each other; and carrying out reaction of the glycerol carbonate separated from the zinc-based catalyst in the presence of an anion alkali metal salt catalyst that is Na, K, Rb, Cs or a mixture thereof containing at least one anion selected from the group consisting of Cl?, Br?, I?, NO3?, NO2? and acetate under a pressure of 0.13-6.67 kPa at a temperature of 140-250° C. to obtain glycidol.Type: ApplicationFiled: February 4, 2016Publication date: August 25, 2016Inventors: Hyun Joo LEE, Byoung Sung AHN, Sang Deuk LEE, Ji Sik CHOI, Hyejeong LEE, Hye Jin LEE
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Publication number: 20160137926Abstract: Disclosed are a gas to liquids (GTL)—floating production, storage and offloading (FPSO) system that can be used in offshore oil-gas fields or stranded gas fields and a method for producing synthetic fuel using the same. More particularly, the disclosure relates to a GTL-FPSO system capable of producing liquid synthetic fuel from gas extracted from stranded gas fields or associated gas extracted from oil-gas fields, including a reforming reactor and a liquid hydrocarbon producer, and a method for producing the same.Type: ApplicationFiled: January 27, 2016Publication date: May 19, 2016Inventors: Dong Ju MOON, Yun Ju Lee, Jung Shik Kang, Moonju Park, Sojung Kim, Sang Deuk Lee, Hyunjoo Lee
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Patent number: 9272959Abstract: Disclosed are a gas to liquids (GTL)-floating production, storage and offloading (FPSO) system that can be used in offshore oil fields or stranded gas fields and a method for producing synthetic fuel using the same. More particularly, the disclosure relates to a GTL-FPSO system capable of producing liquid synthetic fuel from gas extracted from stranded gas fields or associated gas extracted from oil fields, including a reforming reactor and a liquid hydrocarbon producer, and a method for producing the same.Type: GrantFiled: January 10, 2013Date of Patent: March 1, 2016Assignee: Korea Institute of Science and TechnologyInventors: Dong Ju Moon, Yun Ju Lee, Jung Shik Kang, Moonju Park, Sojung Kim, Sang Deuk Lee, Hyunjoo Lee
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Publication number: 20160025317Abstract: The present invention relates to a portable flashlight, and more particularly to a portable flashlight which has a wireless switching function for turning on or off the flashlight by means of a radio signal in addition to a manual switch provided on the outside of the flashlight. The flashlight can not only be turned on or off by means of an external radio signal, but also be used in various ways such as turning on a part of the lamp or intermittently turning on the flashlight. A flashlight according to the present invention includes a power supply part, a lamp for generating a light by means of the power from the power to supply part, and a manual switch connected between the lamp and the power supply part for switching the flashlight, characterized by further including a radio switch in addition to or instead of the manual switch, wherein the radio switch consists of a radio receiver for receiving an external radio signal to operate the radio switch.Type: ApplicationFiled: May 1, 2013Publication date: January 28, 2016Inventor: Sang Deuk LEE
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Patent number: 9199950Abstract: Disclosed is a method for producing glycidol by successive catalytic reactions. The method includes a series of reactions for the preparation of glycerol carbonate from glycerol and the decarboxylation of the glycerol carbonate. Specifically, the method includes i) reacting glycerol with a dialkyl carbonate to prepare glycerol carbonate, and ii) subjecting the glycerol carbonate to decarboxylation wherein a base is added as a catalyst in step i) and is allowed to react with an acid to form a metal salt after step i), and the salt is used as a catalyst in step ii). According to the method, inexpensive and easy-to-purchase acid and base catalysts can be used to produce glycidol from glycerol, a by-product of biodiesel production, as a starting material in high yield with high selectivity in a convenient, simple, and environmentally friendly way. In addition, the method eliminates the need to separate the base catalyst.Type: GrantFiled: June 24, 2014Date of Patent: December 1, 2015Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hyun Joo Lee, Byoung Sung Ahn, Sang Deuk Lee, Jungho Jae, Ji Sik Choi
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Patent number: 9199890Abstract: Disclosed are a gas to liquids (GTL)-floating production, storage and offloading (FPSO) system that can be used in offshore oil fields or stranded gas fields and a method for producing synthetic fuel using the same. More particularly, the disclosure relates to a GTL-FPSO system capable of producing liquid synthetic fuel from gas extracted from stranded gas fields or associated gas extracted from oil fields, including a reforming reactor and a liquid hydrocarbon producer, and a method for producing the same.Type: GrantFiled: November 24, 2010Date of Patent: December 1, 2015Assignee: Korea Institute of Science and TechnologyInventors: Dong Ju Moon, Yun Ju Lee, Jung Shik Kang, Moonju Park, Sojung Kim, Sang Deuk Lee, Hyunjoo Lee
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Publication number: 20150239858Abstract: Disclosed is a method for producing glycidol by successive catalytic reactions. The method includes a series of reactions for the preparation of glycerol carbonate from glycerol and the decarboxylation of the glycerol carbonate. Specifically, the method includes i) reacting glycerol with a dialkyl carbonate to prepare glycerol carbonate, and ii) subjecting the glycerol carbonate to decarboxylation wherein a base is added as a catalyst in step i) and is allowed to react with an acid to form a metal salt after step i), and the salt is used as a catalyst in step ii). According to the method, inexpensive and easy-to-purchase acid and base catalysts can be used to produce glycidol from glycerol, a by-product of biodiesel production, as a starting material in high yield with high selectivity in a convenient, simple, and environmentally friendly way. In addition, the method eliminates the need to separate the base catalyst.Type: ApplicationFiled: June 24, 2014Publication date: August 27, 2015Inventors: Hyun Joo LEE, Byoung Sung AHN, Sang Deuk LEE, Jungho JAE, Ji Sik CHOI
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Patent number: 8969600Abstract: Disclosed is a method for producing glycidol by decarboxylation of glycerol carbonate. In the method, an ionic liquid catalyst is added for the reaction. According to the method glycidol can be produced in high yield and selectivity. The method enables the production of glycidol in an easy, simple and environmentally friendly way.Type: GrantFiled: February 5, 2013Date of Patent: March 3, 2015Assignee: Korea Institute of Science and TechnologyInventors: Hyun Joo Lee, Sang Deuk Lee, Byoung Sung Ahn, Chang Soo Kim, Ji Sik Choi
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Patent number: 8894956Abstract: Disclosed is an sorbent for removing sulfur dioxide (SO2) contained in combustion flue gases or in the atmosphere by using a diamine-based ionic liquid or a diamine compound supported by a polymer resin. To be specific, the present invention relates to a method of using a tertiary diamine compound immobilized on a polymer surface as a SO2 sorbent and also relates to a novel sorbent for absorbing or adsorbing a sulfur dioxide hydrate (SO2.H2O) formed by a bond between SO2 and water.Type: GrantFiled: November 22, 2013Date of Patent: November 25, 2014Assignee: Korea Institute of Science and TechnologyInventors: Hyun Joo Lee, Seung Rok Lim, Kean Im Lee, Chang Soo Kim, Hoon Sik Kim, Ji Sik Choi, Sang Deuk Lee
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Publication number: 20140294718Abstract: Disclosed is an sorbent for removing sulfur dioxide (SO2) contained in combustion flue gases or in the atmosphere by using a diamine-based ionic liquid or a diamine compound supported by a polymer resin. To be specific, the present invention relates to a method of using a tertiary diamine compound immobilized on a polymer surface as a SO2 sorbent and also relates to a novel sorbent for absorbing or adsorbing a sulfur dioxide hydrate (SO2.H2O) formed by a bond between SO2 and water.Type: ApplicationFiled: November 22, 2013Publication date: October 2, 2014Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hyun Joo LEE, Seung Rok LIM, Kean Im LEE, Chang Soo KIM, Hoon Sik KIM, Ji Sik CHOI, Sang Deuk LEE