Patents by Inventor Sang-ok Kim
Sang-ok Kim 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: 20240155775Abstract: A lend moving apparatus includes a circuit board including a mounting groove, an image sensor arranged within the mounting groove of the circuit board, and a first epoxy arranged within the mounting groove. The mounting groove includes a first side surface and a second side surface that face each other, and a third side surface and a fourth side surface that face each other. The circuit board includes at least one application groove provided on the first side surface and/or the second side surface of the mounting groove. The at least one application groove includes an opening opened toward the upper surface of the circuit board. At least a portion of the first epoxy is arranged in the at least one application groove.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Applicant: LG INNOTEK CO.,LTD.Inventors: Do Yun KIM, Seong Min LEE, Eun Mi KIM, Sang Ok PARK
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Patent number: 11973179Abstract: A method of manufacturing a cathode active material for a lithium secondary battery according to embodiments of the present invention includes performing a first heat treatment on a first mixture of a transition metal precursor and a lithium precursor at a first calcination temperature to obtain a preliminary lithium-transition metal composite oxide particle; and performing a second heat treatment on a second mixture obtained by adding the lithium precursor to the preliminary lithium-transition metal composite oxide particle at a second calcination temperature which is lower than the first calcination temperature to form a lithium-transition metal composite oxide particle.Type: GrantFiled: September 22, 2021Date of Patent: April 30, 2024Assignee: SK ON CO., LTD.Inventors: Sang Bok Kim, Jik Soo Kim, Jeong Bae Yoon, Seung Ok Lee, Ji Hoon Choi
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Publication number: 20240120137Abstract: A mounting jig for manufacturing a tiling display device can include a supporting member, a plurality of jig magnets fixed to the supporting member, a hinge structure configured to rotate the plurality of jig magnets, and a guard rail configured to rotate in response to a rotation of the plurality of jig magnets, to reduce damage caused during detachment or attachment. The tiling display device includes a plurality of display devices disposed in the form of tiles. Each of the plurality of display devices includes a plurality of display elements, a plurality of circuits, a plurality of lines and a plurality of parts. The plurality of display elements can be a light emitting diode (LED) or a micro-LED including an n-type semiconductor layer, a p-type semiconductor layer, and a light emitting layer.Type: ApplicationFiled: December 18, 2023Publication date: April 11, 2024Applicant: LG Display Co., Ltd.Inventors: Han Seok KIM, Sung Hwan YOON, Sang Ok SEON, Jae Jun KIM
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Patent number: 11905302Abstract: The present disclosure relates to a prelithiation solution and a method for preparing a prelithiated anode using the same. The prelithiation solution and the method for preparing a prelithiated anode using the same according to the present disclosure allow uniform intercalation of lithium ions throughout the anode chemically in a solution via a simple process of immersing the anode in a prelithiation solution having a sufficiently low redox potential as compared to an anode active material. A prelithiated anode prepared by this method has an ideal initial coulombic efficiency and a lithium secondary battery with a high energy density can be prepared based thereon. In addition, the prepared anode is advantageously applicable to large-scale production due to superior stability even in dry air.Type: GrantFiled: December 14, 2020Date of Patent: February 20, 2024Assignee: Korea Institute of Science and TechnologyInventors: Minah Lee, Jihyun Hong, Kyung Yoon Chung, Jin-Yoo Suh, Sang Ok Kim, Hyungseok Kim, Inyeong Kang, Ju Young Jang, Jin Kwan Choi
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Patent number: 11411219Abstract: Disclosed is a calcined carbon material for a magnesium battery anode. The calcined carbon material includes catalytic carbon nanotemplates having a network structure in which nanofibers are entangled three-dimensionally. The calcined carbon material can be used as a magnesium battery anode material. Also disclosed is a method for preparing the calcined carbon material.Type: GrantFiled: March 13, 2020Date of Patent: August 9, 2022Assignees: Korea Institute of Science and Technology, Korea University Research and Business FoundationInventors: Hee-Dae Lim, Si Hyoung Oh, Hun-Gi Jung, Minah Lee, Hyungseok Kim, Sang Ok Kim, Young Soo Yun
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Publication number: 20210347787Abstract: The present disclosure relates to a prelithiation solution and a method for preparing a prelithiated anode using the same. The prelithiation solution and the method for preparing a prelithiated anode using the same according to the present disclosure allow uniform intercalation of lithium ions throughout the anode chemically in a solution via a simple process of immersing the anode in a prelithiation solution having a sufficiently low redox potential as compared to an anode active material. A prelithiated anode prepared by this method has an ideal initial coulombic efficiency and a lithium secondary battery with a high energy density can be prepared based thereon. In addition, the prepared anode is advantageously applicable to large-scale production due to superior stability even in dry air.Type: ApplicationFiled: December 14, 2020Publication date: November 11, 2021Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Minah LEE, Jihyun HONG, Kyung Yoon CHUNG, Jin-Yoo SUH, Sang Ok KIM, Hyungseok KIM, Inyeong KANG, Ju Young JANG, Jin Kwan CHOI
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Publication number: 20210167386Abstract: Disclosed is a calcined carbon material for a magnesium battery anode. The calcined carbon material includes catalytic carbon nanotemplates having a network structure in which nanofibers are entangled three-dimensionally. The calcined carbon material can be used as a magnesium battery anode material. Also disclosed is a method for preparing the calcined carbon material.Type: ApplicationFiled: March 13, 2020Publication date: June 3, 2021Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATIONInventors: Hee-Dae LIM, Si Hyoung OH, Hun-Gi JUNG, Minah LEE, Hyungseok KIM, Sang Ok KIM, Young Soo YUN
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Patent number: 10818922Abstract: An anode active material for a sodium ion secondary battery, a sodium ion secondary battery including an anode active material, and an electric device including the sodium ion secondary battery are disclosed. The anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide represented by Co2.4Sn0.6O4. The sodium ion secondary battery includes an anode made of an anode active material composed of a cobalt tin spinel oxide represented by Chemical Formula 1 below: Co2+xSn1-xO4,??Chemical Formula 1 where x is a real number satisfying 0?x?0.9; an electrolyte; and a cathode. The sodium ion secondary battery has high capacity characteristics. The electric device including the sodium ion secondary battery includes an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, and an electric power storage system.Type: GrantFiled: February 6, 2019Date of Patent: October 27, 2020Assignee: Korea Institute of Science and TechnologyInventors: Kyung Yoon Chung, Hun-Gi Jung, Ji-Young Kim, Ghulam Ali, Mobinul Islam, Sang Ok Kim, Hyungseok Kim
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Publication number: 20190319265Abstract: The present disclosure relates to an anode active material for a sodium ion secondary battery, a method for preparing the same, and a sodium ion secondary battery including the same. More particularly, the anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide obtained by a simple precipitation process, and can be applied to a sodium ion secondary battery having high capacity characteristics.Type: ApplicationFiled: February 6, 2019Publication date: October 17, 2019Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Kyung Yoon CHUNG, Hun-Gi JUNG, Ji-Young KIM, Ghulam ALI, Mobinul ISLAM, Sang Ok KIM, Hyungseok KIM
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Patent number: 10432215Abstract: The present disclosure in some embodiments provides a transmit data structure and a communication method using the same, which can minimize the loss of the transmit data during the transmission and reception of the transmit data by optical camera communication.Type: GrantFiled: December 21, 2017Date of Patent: October 1, 2019Assignee: YUYANG DNU Co., Ltd.Inventors: Sang Ok Kim, Byung Oh Kim, Sang Ho Yoon, Tae Hoon Lee, Jung Il Han, Jung Ho Lee
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Publication number: 20190188663Abstract: Provided are a method of relaying, by a payment gateway server, a payment using a representative card connected to a plurality of general cards, the method comprising steps of: (a) acquiring card information of a card set as a payment card among the plurality of general cards connected to the representative card when a payment approval is requested using the representative card; and (b) requesting the payment approval to a card company server using the acquired card information of the payment card and processing such that the payment approval made using the payment card is completed.Type: ApplicationFiled: February 8, 2018Publication date: June 20, 2019Inventors: Jong Yoon KIM, Woo Kyung CHANG, Bom Shik KIM, Joo Yun LEE, Myeong Suk CHOI, Dong Chul KIM, Sang Ok KIM, Bo Rim LEE, Jae Kyung LEE
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Publication number: 20190132000Abstract: The present disclosure in some embodiments provides a transmit data structure and a communication method using the same, which can minimize the loss of the transmit data during the transmission and reception of the transmit data by optical camera communication.Type: ApplicationFiled: December 21, 2017Publication date: May 2, 2019Inventors: Sang Ok KIM, Byung Oh KIM, Sang Ho YOON, TAE HOON LEE, JUNG IL HAN, Jung Ho LEE
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Patent number: 9997919Abstract: An apparatus for operating a distributed generator in connection with a power system includes an input unit which receives a parameter calculated using power system information and a voltage and a current at a point of common coupling with the distributed generator, with which the distributed generator is connected, a calculation unit which calculates an operating power factor instruction value and an active output instruction value using the parameter and the voltage and current at the point of common coupling with the distributed generator input to the input unit, and a control communication unit which determines and transmits the operating power factor instruction value and the active output instruction value according to the voltage at the point of common coupling with the distributed generator input to the input unit and an admissible voltage upper limit at the point of common coupling with the distributed generator to the distributed generator.Type: GrantFiled: September 27, 2013Date of Patent: June 12, 2018Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Seong Soo Cho, Won Wook Jung, Il Keun Song, Sang Ok Kim, Joon Ho Choi
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Patent number: 9673633Abstract: Provided are an apparatus and method for minimizing a distribution loss which reconstructs the system construction of a distribution system in consideration of section load characteristics of mutually different distribution system. The apparatus for minimizing a distribution loss which determines a loss calculation period for detecting a loss minimization time point using mutually different distribution systems, calculates loss values of mutually different distribution systems set according to each time point of the loss calculation period, and calculates a total loss value, and selects the mutually different distribution systems one by one during the loss calculation period, and calculates a loss value for specific systems of each distribution system in consideration of a change of a section load in each selected distribution system, determines a loss minimization time point using the specific system loss value of each distribution system and the total loss value.Type: GrantFiled: September 30, 2011Date of Patent: June 6, 2017Assignee: Korea Electric Power CorporationInventors: Moon-Jong Jang, Bok-Nam Ha, Sung-Woo Lee, Sang-Ok Kim, Dong-Wan Seo, Won Namkoong
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Patent number: 9575482Abstract: The present invention relates to an apparatus and method for performing adjustment to optimize the voltage for each distribution network in a power distribution system. The apparatus for adjusting a voltage in the power distribution system adjusts the voltage by switching a switch that lies on a path in the power distribution system. The apparatus determines a switch that is to become a switching target from among switches lying on the path, obtains a voltage optimization value of the determined switching target switch, selects a switch having the minimum voltage optimization value by changing the switching target switch to another switch in order to obtain the voltage optimization value, and adjusts the voltage through switching of the selected switch.Type: GrantFiled: September 30, 2011Date of Patent: February 21, 2017Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Won Namkoong, Bok-Nam Ha, Sung-Woo Lee, In-Yong Seo, Moon-Jong Jang, Dong-Wan Seo, Sang-Ok Kim
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Publication number: 20160072290Abstract: An apparatus for operating a distributed generator in connection with a power system includes an input unit which receives a parameter calculated using power system information and a voltage and a current at a point of common coupling with the distributed generator, with which the distributed generator is connected, a calculation unit which calculates an operating power factor instruction value and an active output instruction value using the parameter and the voltage and current at the point of common coupling with the distributed generator input to the input unit, and a control communication unit which determines and transmits the operating power factor instruction value and the active output instruction value according to the voltage at the point of common coupling with the distributed generator input to the input unit and an admissible voltage upper limit at the point of common coupling with the distributed generator to the distributed generator.Type: ApplicationFiled: September 27, 2013Publication date: March 10, 2016Applicant: KOREA ELECTRIC POWER CORPORATIONInventors: Seong Soo CHO, Won Wook JUNG, Il Keun SONG, Sang Ok KIM, Joon Ho CHOI
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Publication number: 20140244061Abstract: The present invention relates to an apparatus and method for performing adjustment to optimize the voltage for each distribution network in a power distribution system. The apparatus for adjusting a voltage in the power distribution system adjusts the voltage by switching a switch that lies on a path in the power distribution system. The apparatus determines a switch that is to become a switching target from among switches lying on the path, obtains a voltage optimization value of the determined switching target switch, selects a switch having the minimum voltage optimization value by changing the switching target switch to another switch in order to obtain the voltage optimization value, and adjusts the voltage through switching of the selected switch.Type: ApplicationFiled: September 30, 2011Publication date: August 28, 2014Applicant: KOREA ELECTRIC POWER CORPORATIONInventors: Won Namkoong, Bok-Nam Ha, Sung-Woo Lee, In-Yong Seo, Moon-Jong Jang, Dong-Wan Seo, Sang-Ok Kim
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Publication number: 20140232186Abstract: Provided are an apparatus and method for minimizing a distribution loss which reconstructs the system construction of a distribution system in consideration of section load characteristics of mutually different distribution system. The apparatus for minimizing a distribution loss which determines a loss calculation period for detecting a loss minimization time point using mutually different distribution systems, calculates loss values of mutually different distribution systems set according to each time point of the loss calculation period, and calculates a total loss value, and selects the mutually different distribution systems one by one during the loss calculation period, and calculates a loss value for specific systems of each distribution system in consideration of a change of a section load in each selected distribution system, determines a loss minimization time point using the specific system loss value of each distribution system and the total loss value.Type: ApplicationFiled: September 30, 2011Publication date: August 21, 2014Applicant: KOREA ELECTRIC POWER CORPORATIONInventors: Moon-Jong Jang, Bok-Nam Ha, Sung-Woo Lee, Sang-Ok Kim, Dong-Wan Seo, Won Namkoong
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Patent number: 8741254Abstract: The present invention relates to a method of preparing a porous silicon nanorod structure composed of columnar bundles having a diameter of 50-100 nm and a length of 2-5 ?m, and a lithium secondary cell using the porous silicon nanorod structure as an anode active material. The present invention provides a high-capacity and high-efficiency anode active material for lithium secondary cells, which can overcome the low conductivity of silicon and improve the electrode deterioration attributable to volume expansion because it is prepared by electrodepositing the surface of silicon powder with metal and simultaneously etching the silicon powder partially using hydrofluoric acid.Type: GrantFiled: August 4, 2009Date of Patent: June 3, 2014Assignee: Korea Institute of Science and TechnologyInventors: Joong Kee Lee, Byung Won Cho, Joo Man Woo, Hyung Sun Kim, Kyung Yoon Chung, Won Young Chang, Sang Ok Kim, Sang Eun Park
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Publication number: 20130252068Abstract: Disclosed are a silicon nanostructured material with theoretical storage capacity of energy resulting from electrochemical reaction with lithium improved more than 10 times as compared to the existing graphite material and having superior output characteristics, an electrode including the same, and a secondary battery and an electrochemical capacitor including the electrode as a negative electrode. The physical stability of the electrode active material is improved and an electrode with high performance can be obtained. Since more energy can be stored as compared to the graphite material of the same thickness and high-output performance can be achieved through the nanostructure, energy density can be remarkably improved as compared to the existing lithium-ion battery by about 2 times. An asymmetric lithium-ion secondary battery including the electrode active material is applicable to storage of renewable energy, ubiquitous power source, power supply for machinery and vehicles, or the like.Type: ApplicationFiled: August 24, 2012Publication date: September 26, 2013Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Joong Kee LEE, Won Chang CHOI, Joo Man WOO, Ho Suk CHOI, Jung Sub KIM, Hieu Si NGUYEN, Chairul HUDAYA, A Young KIM, Ji Hun PARK, Sang Ok KIM, Xuyan LIU