Patents by Inventor Kyoung Hwan Choi
Kyoung Hwan Choi 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: 20240087225Abstract: The interaction system includes: an infrastructure image sensor-based 3D cloud restoration module configured to create a 3D cloud point using a multi-view image received from an infrastructure sensor; a real-time 3D map creation and learning update module configured to generate subset data composed of point clouds into a 3D map using 3D point information received from the infrastructure image sensor-based 3D cloud restoration module; an object estimation module in a 3D space configured to recognize and track an object existing in a 3D space based on the 3D map received from the real-time 3D map creation and learning update module; and a dangerous situation recognition and interaction module in space configured to receive information on an object existing in the 3D space from the object estimation module in the 3D space, recognize a dangerous situation, and provide dangerous situation related information.Type: ApplicationFiled: September 13, 2023Publication date: March 14, 2024Inventors: JinWoo KIM, Ki Tae KIM, MyungWook PARK, Kyoung Hwan AN, Jeong Dan CHOI
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Publication number: 20240080228Abstract: A data receiving device may include a dummy stage block. The dummy stage block may include m dummy stages, wherein m is a natural number greater than or equal to two. Each of the m dummy stages may be configured to remove inter-symbol interference (ISI) from a dummy input signal using dummy coefficient information to generate a dummy output signal free of the ISI. Each of the m dummy stages may be further configured to output the dummy output signal. A normal stage block may include n normal stages, wherein n is a natural number greater than or equal to two. Each of the n normal stages may be configured to remove ISI from an input signal using coefficient information to generate an output signal free of the ISI and may be further configured to output the output signal.Type: ApplicationFiled: April 13, 2023Publication date: March 7, 2024Inventors: Jin Ook JUNG, Jae Woo PARK, Myoung Bo KWAK, Young Min KU, Kyoung Jun ROH, Jung Hwan CHOI
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Patent number: 11548962Abstract: A self-healing polymer network containing a physical crosslinking agent, a composition therefor, and an optical element comprising the same is provided. The self-healing polymer network comprises a polymer derived from monomers including self-healing monomers each having a first polymerizable functional group and at least one of urethane, urea, or amide group chemically linked to the first polymerizable functional group, wherein the polymer has a backbone formed by polymerizing the first polymerizable functional groups of the self-healing monomers and a plurality of side groups each having at least one of urethane, urea, or amide group chemically linked to the backbone. In addition, the self-healing polymer network comprises a physical crosslinking agent which is an alcohol mixture having at least two of monool, diol, triol, and tetraol or the higher polyol and crosslinking the polymer by physically crosslinking the urethane, urea, or amide group of the side groups.Type: GrantFiled: May 11, 2018Date of Patent: January 10, 2023Assignee: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Dong Hack Suh, Kyoung Hwan Choi, Jeong Seop Oh
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Publication number: 20200216581Abstract: A self-healing polymer network containing a physical crosslinking agent, a composition therefor, and an optical element comprising the same is provided. The self-healing polymer network comprises a polymer derived from monomers including self-healing monomers each having a first polymerizable functional group and at least one of urethane, urea, or amide group chemically linked to the first polymerizable functional group, wherein the polymer has a backbone formed by polymerizing the first polymerizable functional groups of the self-healing monomers and a plurality of side groups each having at least one of urethane, urea, or amide group chemically linked to the backbone. In addition, the self-healing polymer network comprises a physical crosslinking agent which is an alcohol mixture having at least two of monool, diol, triol, and tetraol or the higher polyol and crosslinking the polymer by physically crosslinking the urethane, urea, or amide group of the side groups.Type: ApplicationFiled: May 11, 2018Publication date: July 9, 2020Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Dong Hack SUH, Kyoung Hwan CHOI, Jeong Seop OH
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Patent number: 9399826Abstract: A thin film deposition apparatus and a thin film deposition method using an electric field are provided. The thin film deposition apparatus includes: a first substrate; a plurality of electrodes in a 2D arrangement on the first substrate; and a solution provided on the plurality of electrodes and in which charged nanoparticles are distributed, wherein the charged nanoparticles are selectively deposited on at least a part of the plurality of electrodes by independently applying a voltage to each of the plurality of electrodes.Type: GrantFiled: May 15, 2014Date of Patent: July 26, 2016Assignees: SAMSUNG ELECTRONICS CO., LTD., The Regents of The University of CaliforniaInventors: Jin S. Heo, Hwi-yeol Park, Kyung-hoon Cho, Kyoung-hwan Choi, Se-jung Kim, Michael J. Heller, Young-jun Song
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Patent number: 9379404Abstract: An electrolyte membrane for a fuel cell includes: an inorganic ionic conductor including a trivalent metal element, a pentavalent metal element, phosphorous, and oxygen; and a polymer.Type: GrantFiled: May 1, 2013Date of Patent: June 28, 2016Assignees: SAMSUNG ELECTRONICS CO., LTD., NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITYInventors: Pil-won Heo, Ki-hyun Kim, Takashi Hibino, Chan-ho Pak, Kyoung-hwan Choi
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Publication number: 20150329984Abstract: A thin film deposition apparatus and a thin film deposition method using an electric field are provided. The thin film deposition apparatus includes: a first substrate; a plurality of electrodes in a 2D arrangement on the first substrate; and a solution provided on the plurality of electrodes and in which charged nanoparticles are distributed, wherein the charged nanoparticles are selectively deposited on at least a part of the plurality of electrodes by independently applying a voltage to each of the plurality of electrodes.Type: ApplicationFiled: May 15, 2014Publication date: November 19, 2015Applicants: The Regents of the University of California, SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin S. HEO, Hwi-yeol PARK, Kyung-hoon CHO, Kyoung-hwan CHOI, Se-jung KIM, Michael J. Heller, Young-jun SONG
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Publication number: 20140099563Abstract: A fuel cell stack includes a plurality of unit cells, a cooling plate and a block plate. Each unit cell includes a cathode electrode and an anode electrode respectively at opposing sides of an electrolyte membrane, and a separator facing each of the cathode electrode and the anode electrode. The cooling plate is between adjacent unit cells a cooling medium flows in the cooling plate. The block plate is between the cooling plate and an adjacent unit cell of the adjacent unit cells. The block plate blocks the cooling medium flowing in the cooling plate from contacting the adjacent unit cell of the adjacent unit cells.Type: ApplicationFiled: March 12, 2013Publication date: April 10, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae-won SONG, Kyoung-hwan CHOI, Jeong-sik KO, Ji-rae KIM, Jung-seok YI
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Publication number: 20130236813Abstract: An inorganic ion conductor including a trivalent metallic element, a pentavalent metallic element, phosphorus, and oxygen.Type: ApplicationFiled: January 29, 2013Publication date: September 12, 2013Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, SAMSUNG ELECTRONICS CO., LTD.Inventors: Pil-won HEO, Ki-hyun KIM, Hibino Takashi, Chan-ho PAK, Kyoung-hwan CHOI
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Publication number: 20130065152Abstract: A channel plate assembly of a stack for a fuel cell and a method of manufacturing the channel plate assembly. The channel plate assembly of a stack for a fuel cell includes a bridge piece disposed on a channel plate to entirely surround a manifold, and a gasket disposed on the channel plate to cover the bridge piece, wherein the channel plate assembly is manufactured in an integrated fashion.Type: ApplicationFiled: March 29, 2012Publication date: March 14, 2013Applicant: Samsung Electronics, Co., Ltd.Inventors: Joon-hee KIM, Hye-jung CHO, Kyoung-hwan CHOI
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Patent number: 8318366Abstract: A hydrogen generator and a fuel cell using the same includes: a first container containing an aqueous solution of alkaline metal carbonate or bicarbonate; a second container containing a metal hydride; and a supply unit disposed between the first container and the second container. The hydrogen generator has a high hydrogen generating rate, can provide a fuel cell with a high energy density, and the amount of hydrogen generated thereby is easy to control.Type: GrantFiled: July 11, 2008Date of Patent: November 27, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Jin-ho Kim, Jae-yong Lee, Yeong-suk Choi, Kyoung-hwan Choi
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Patent number: 8232021Abstract: A fuel cell stack including an electricity generating unit for generating electrical energy by electrochemically reacting a fuel and an oxidizing agent, the electricity generating unit including: a first separator; a second separator; a membrane electrode assembly (MEA) between the first separator and the second separator, each of the first and second separators including a channel on a surface facing the MEA and a manifold in the surface facing the MEA, the manifold communicating with the channel; and a gasket, positioned at an outer circumference portion of an area where the MEA is positioned, for sealing a space between the first and second separators and for covering an open area of a channel extension area of at least one of the first and second separators where the manifold communicates with the channel.Type: GrantFiled: March 24, 2008Date of Patent: July 31, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Jun-Won Suh, Young-Seung Na, Keun-Yong Lee, Sung-Won Jeong, Chan-Gyun Shin, Kyoung-Hwan Choi, Sang-Kyun Kang
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Patent number: 8227132Abstract: A direct liquid feed fuel cell stack includes a first end plate and a second end plate facing each other, and a plurality of unit cell modules mounted between the first end plate and the second end plate, wherein an electrical circuit that contacts terminals of the unit cell modules is formed on an inner surface of the first end plate.Type: GrantFiled: May 19, 2006Date of Patent: July 24, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Jin-ho Kim, Kyoung Hwan Choi, Hye-Jung Cho
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Publication number: 20120171592Abstract: A unit cell of a fuel cell stack, and a fuel cell stack including the unit cell, where the unit cell includes channel plates including first and second manifolds, a plurality of channels and channel connecting units; hard plates arranged to contact surfaces of the channel connecting units; and gaskets arranged to surround the plurality of channels and first and second manifolds between the channel plates and the hard plates.Type: ApplicationFiled: May 17, 2011Publication date: July 5, 2012Applicant: Samsung Electronics Co., Ltd.Inventors: Tae-won SONG, Jung-seok Yi, Kyoung-hwan Choi, Ji-rae Kim
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Patent number: 8206868Abstract: A direct liquid feed fuel cell system includes fuel cells including an electrolyte membrane, a plurality of cathode electrodes formed on a first surface of the electrolyte membrane, and anode electrodes formed on a second part of the electrolyte membrane; and a high concentration fuel storage unit and a low concentration fuel storage unit which are separated from each other and store a liquid fuel to be supplied to the fuel cell. The liquid fuel in the low concentration fuel storage unit is supplied to the anode electrodes wherein the liquid fuel in the low concentration fuel storage unit is supplied to the anode electrodes when pressure is applied to the low concentration fuel storage unit, such as when the direct liquid feed fuel cell system having the low concentration fuel storage unit is mounted on an electronic device.Type: GrantFiled: August 3, 2006Date of Patent: June 26, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Jae-yong Lee, Hye-jung Cho, Kyoung Hwan Choi
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Patent number: 8129064Abstract: A method of measuring methanol vapor concentration on a real-time basis and a methanol vapor concentration measuring apparatus used in fuel cells. The method of measuring methanol vapor concentration involves using an absorption spectrometry technique, that is, after measuring intensities I0 and I1 of light of a laser before and after passing through a space filled with methanol vapor and into which light is irradiated, the methanol vapor concentration is calculated by substituting the intensities I0 and I1 into an equation defined as I1/I0=exp (K·L·C), where K represents the absorption coefficient, L represents the length of the space through which the laser passes, and C represents the methanol vapor concentration.Type: GrantFiled: May 19, 2009Date of Patent: March 6, 2012Assignees: Samsung SDI Co., Ltd., Industry-Academic Cooperation Foundation, Younsei UniversityInventors: Kyoung-hwan Choi, Sang-Kyun Kang, Jin-ho Kim, Soon-ho Song, Jin-hwa Chung
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Patent number: 8119306Abstract: A bipolar plate and a direct liquid feed fuel cell stack are provided. The bipolar plate includes a manifold that is coupled with the fuel/oxidant path holes and a plurality of flow channels that are coupled with the manifold. The flow channels are divided into a plurality of groups, where the flow channel of each group forms a serpentine flow path and a length of each flow channel is substantially the same.Type: GrantFiled: November 28, 2005Date of Patent: February 21, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung Hwan Choi, Jong-koo Lim, Yong-hun Cho, Il Moon
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Patent number: 8110315Abstract: A monopolar membrane-electrode assembly includes an electrolyte membrane with a plurality of cell regions, an anode supporting body and a cathode supporting body on both sides of the electrolyte membrane, respectively having a plurality of apertures corresponding to the cell regions, a plurality of anode and cathode current collectors, each including a current collecting portion to correspond to each aperture of the respective anode or cathode supporting body to collect current, a conducting portion connected to a side of the current collecting portion, and a connecting line that connects the conducting portion to an outside terminal, a plurality of anode and cathode electrodes respectively formed on the and the cathode current collecting portions, and a circuit unit connected to the connecting lines of the anode current collectors and the cathode current collectors, wherein the cells are connected in series or parallel, or electrically separated through the circuit unit.Type: GrantFiled: February 5, 2007Date of Patent: February 7, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Jae-yong Lee, Jin-ho Kim, Kyoung-hwan Choi
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Publication number: 20120028156Abstract: A stack and a method of operating the stack. A method of operating a stack having a plurality of cells and a plurality of cooling plates includes: supplying a working fluid to a first group of the cooling plates; and re-supplying the working fluid passed through the first group of the cooling plates to a second group of the cooling plates, wherein the first and second groups are divided according to an operating temperature in the stack.Type: ApplicationFiled: June 23, 2011Publication date: February 2, 2012Applicant: Samsung Electronics Co., Ltd.Inventors: Tae-won SONG, Kyoung-hwan CHOI, Jung-seok YI, Ji-rae KIM
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Patent number: 8048586Abstract: A fuel cell stack induces smooth current collection and liquid or gas flow without using a heavy bipolar plate. The fuel cell stack includes: a membrane and electrode assembly (MEA) in which an electrolyte membrane is disposed between a cathode electrode and an anode electrode; a current collector disposed in the MEA to form an electrical path with an adjacent MEA; and a non-conductive separation plate disposed between the MEA and the adjacent MEA, the non-conductive separation plate forming flow channels to supply a liquid or gas to the cathode electrode and the anode electrode. A fuel cell stack structure having the above structure is simple and lightweight as the MEA includes a thin and lightweight non-conductive polymer separation plate and a current collector to connect adjacent MEAs.Type: GrantFiled: October 30, 2007Date of Patent: November 1, 2011Assignee: Samsung SDI Co., Ltd.Inventors: Jae-yong Lee, Kyoung-hwan Choi, Chan-ho Pak