Patents by Inventor Chang Wan Kim
Chang Wan 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: 20240167980Abstract: Proposed is an apparatus for measuring capsaicin in chili peppers. More particularly, proposed are an apparatus and a method for measuring capsaicin in chili peppers, the apparatus and the method being capable of measuring the capsaicin content of chili peppers simply and precisely. The apparatus includes: a first electrochemical measuring cell and a second electrochemical measuring cell into each of which a capsaicin extract is injected; a multiplexer electrically connected to a selected one of the first and second electrochemical measuring cells; a potentiostat applying voltage to the first or second electrochemical measuring cell and measuring an oxidation current value; and a controller controlling the potentiostat and the multiplexer to sequentially electrically connect the potentiostat to each of the first and second electrochemical measuring cells and measuring a first capsaicin content and a second capsaicin content on the basis of the oxidation current value as a function of applied voltage.Type: ApplicationFiled: March 4, 2022Publication date: May 23, 2024Inventors: Hyeong Won SEO, Chang Woo KIM, Myoung Sun SHIN, Gyeong Sook BANG, Ki Wan KIM, Pan Su JANG, Woo Hyeung CHO
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Patent number: 11973222Abstract: A positive electrode active material precursor having a uniform particle size distribution and represented by Formula 1, wherein a percentage of fine powder with an average particle diameter (D50) of 1 ?m or less is generated when the positive electrode active material precursor is rolled at 2.5 kgf/cm2 is less than 1%, and an aspect ratio is 0.93 or more, and a method of preparing the positive electrode active material precursor [NixCoyM1zM2w](OH)2 ??[Formula 1] in Formula 1, 0.5?x<1, 0<y?0.5, 0<z?0.5, and 0?w?0.1, M1 includes at least one selected from the group consisting of Mn and Al, and M2 includes at least one selected from the group consisting of Zr, B, W, Mo, Cr, Nb, Mg, Hf, Ta, La, Ti, Sr, Ba, Ce, F, P, S, and Y. A method of preparing the positive electrode active material precursor is also provided.Type: GrantFiled: December 7, 2018Date of Patent: April 30, 2024Assignee: LG Chem, Ltd.Inventors: Seong Bae Kim, Yi Rang Lim, Kyoung Wan Park, Hyun Uk Kim, Hong Kyu Park, Chang Jun Moon, Eun Hee Kim
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Publication number: 20240097107Abstract: The present invention relates to a method of preparing a positive electrode which includes forming a solid electrolyte by mixing a lithium salt and a polymer for a solid electrolyte in a dry atmosphere, forming a dry mixture by stirring after adding a conductive agent and a positive electrode active material to the solid electrolyte in a dry atmosphere, and pressing after coating a current collector with the dry mixture.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicant: LG Energy Solution, Ltd.Inventors: Chang Wan Koo, Ki Tae Kim, Sang Hoon Choy
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Publication number: 20240095484Abstract: Proposed is a dual band RFID tag including a first rectifier configured to receive and rectify a first RF signal modulated at a first frequency, a first regulator configured to regulate an output voltage of the first rectifier, a second rectifier configured to receive and rectify a second RF signal modulated at a second frequency, a second regulator configured to regulate an output voltage of the second rectifier, a voltage distributor connected to a first node and a ground in a state of being positioned therebetween, the output terminal of the first rectifier and the output terminal of the second rectifier being both connected to the first node, a multiplexer configured to output any one of an analog detection signal output from a sensor and an output signal of the voltage distributor, in response to a first selection signal or a second selection signal, and an analog-to-digital converter configured to receive as an operating voltage a voltage of a second node to which an output terminal of the first regulatType: ApplicationFiled: April 26, 2023Publication date: March 21, 2024Inventors: Sung Wan KIM, Pyeong Han LEE, Kwang Beom PARK, Sung Hun CHUN, Chang Ho RYU
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Publication number: 20240099129Abstract: The present invention relates to a composition for an organic optoelectronic device, the composition comprising: a first host compound represented by Chemical Formula 1 below; and a second host compound represented by Chemical Formula 2 below, to an organic optoelectronic device using the composition and a display device. The details of Chemical Formulas 1 and 2 above are as defined in the specification.Type: ApplicationFiled: November 7, 2023Publication date: March 21, 2024Inventors: Dong Wan RYU, Chang Ju SHIN, Seungjae LEE, Hyung Sun KIM, Yuna JANG, Eun Sun YU, Sung-Hyun JUNG
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Publication number: 20240086603Abstract: A method of reinforcement learning of a neural network device for generating a verification vector for verifying a circuit design comprising a circuit block includes inputting a test vector to the circuit block, generating one or more rewards based on a coverage corresponding to the test vector, the coverage being determined based on a state transition of the circuit block based on the test vector, and applying the one or more rewards to a reinforcement learning.Type: ApplicationFiled: November 16, 2023Publication date: March 14, 2024Applicant: SAMSUNG ELECTRONICS CO, LTD.Inventors: In HUH, Jeong-hoon KO, Hyo-jin CHOI, Seung-ju KIM, Chang-wook JEONG, Joon-wan CHAI, Kwang-II PARK, Youn-sik PARK, Hyun-sun PARK, Young-min OH, Jun-haeng LEE, Tae-ho LEE
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Publication number: 20240089124Abstract: Disclosed herein are an apparatus and method for mutual authentication of quantum entities based on Measurement-Device-Independent Quantum Key Distribution (MDI-QKD). The method may include configuring a quantum input form based on an authentication key shared in advance with a counterpart entity, applying polarization modulation to the configured quantum input form, transmitting the quantum input form to which polarization modulation is applied to a quantum measurement device, and authenticating the counterpart entity by checking whether the counterpart entity configures a quantum input form according to the shared authentication key using a measurement result and information about polarization modulation.Type: ApplicationFiled: March 24, 2023Publication date: March 14, 2024Inventors: Chang-Ho HONG, Se-Wan JI, O-Sung KWON, Youn-Chang JEONG, Eun-Ji KIM, Seok KIM, Haeng-Seok KO, Dae-Sung KWON, Jin-Gak JANG
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Publication number: 20240090325Abstract: The present invention relates to a composition for an organic optoelectronic device, the composition comprising: a first host compound represented by Chemical Formula 1 below; and a second host compound represented by Chemical Formula 2 below, to an organic optoelectronic device using the composition and a display device. The details of Chemical Formulas 1 and 2 above are as defined in the specification.Type: ApplicationFiled: November 7, 2023Publication date: March 14, 2024Inventors: Dong Wan RYU, Chang Ju SHIN, Seungjae LEE, Hyung Sun KIM, Yuna JANG, Eun Sun YU, Sung-Hyun JUNG
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Publication number: 20240072553Abstract: An electronic device includes a connector including a pair of terminals connected to a power source, a voltage sensor provided to detect a voltage between the pair of terminals, a communication device provided to perform communication with an external control device through a network, and a controller configured to determine whether the connector is separated from the power source based on a voltage variation between the pair of terminals, control the communication device to request the external control device to cut off power of the power source when the connector is separated from the power source, and control to perform self-discharge.Type: ApplicationFiled: May 3, 2023Publication date: February 29, 2024Inventors: Ji Wan Son, Taewoong Lim, Chan Woong Jo, Dong Seok Oh, Chang Hwan Kim
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Patent number: 11276603Abstract: A transfer method of transferring an object to a target substrate by using a deformable film is provided. The method includes: a first process of forming an object on a source substrate, a second process of placing a deformable film on the source substrate on which the object is formed, a third process of embedding the object into the deformable film, a fourth process of separating an object, which is to be transferred, from the source substrate, integrating the transfer object in or on a surface of the deformable film, and separating deformable film, in which the transfer object is integrated, from the source substrate, and a fifth process of transferring the object integrated into the deformable film to a target substrate.Type: GrantFiled: June 22, 2020Date of Patent: March 15, 2022Assignee: LC SQUARE CO., LTD.Inventors: Je Hyuk Choi, Chang Wan Kim, Chan Soo Shin, Hyeong Ho Park, Shin Keun Kim
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Publication number: 20200321234Abstract: A transfer method of transferring an object to a target substrate by using a deformable film is provided. The method includes: a first process of forming an object on a source substrate, a second process of placing a deformable film on the source substrate on which the object is formed, a third process of embedding the object into the deformable film, a fourth process of separating an object, which is to be transferred, from the source substrate, integrating the transfer object in or on a surface of the deformable film, and separating deformable film, in which the transfer object is integrated, from the source substrate, and a fifth process of transferring the object integrated into the deformable film to a target substrate.Type: ApplicationFiled: June 22, 2020Publication date: October 8, 2020Applicant: LC SQUARE CO., LTD.Inventors: Je Hyuk CHOI, Chang Wan KIM, Chan Soo SHIN, Hyeong Ho PARK, Shin Keun KIM
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Publication number: 20170147258Abstract: A memory system may include: a memory device comprising a plurality of memory blocks suitable for storing data; and a controller suitable for dividing command data into first and second data, performing a first command operation with the first data to one or more first memory blocks among the memory blocks, and performing a second command operation with the second data to one or more second memory blocks among the memory blocks, in response to a command.Type: ApplicationFiled: April 12, 2016Publication date: May 25, 2017Inventor: Chang-Wan KIM
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Patent number: 7564301Abstract: Provided are an apparatus for adjusting frequency characteristic and Q factor of a low pass filter (LPF) and a method thereof. The apparatus includes: a frequency comparing unit for calculating a first square value and a second square value, and comparing a first reference value with the first and the second square values; a frequency adjusting unit for adjusting the frequency characteristic to range the first reference value between the first square value and the second square value; a Q factor comparing unit for calculating a third square value, and comparing a second and a third reference values with the third square value; a control unit for activating the Q factor comparing unit when the frequency characteristic is completely adjusted; and a Q factor adjusting unit for adjusting the Q factor to range the third square value between the second reference value and the third reference value.Type: GrantFiled: October 30, 2007Date of Patent: July 21, 2009Assignee: Electronics and Telecommunications Research InstituteInventors: Seung-Sik Lee, Bong-Hyuk Park, Chang-Wan Kim, Sang-Sung Choi
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Patent number: 7456438Abstract: A nitride-based semiconductor LED which is flip-chip bonded on a lead pattern of a sub-mount through a bump ball comprises a substrate; a light-emitting structure formed on the substrate; an electrode formed on the light-emitting structure; a protective film formed on the resulting structure having the electrode formed therein, the protective film exposing the electrode surface corresponding to a portion which is connected to the lead pattern of the sub-mount through a bump ball; and a grid-shape buffer film formed on the electrode surface exposed through the protective film.Type: GrantFiled: October 17, 2006Date of Patent: November 25, 2008Assignee: Samsung Electro-Mechanics Co., ltd.Inventors: Hyuk Min Lee, Hyoun Soo Shin, Chang Wan Kim, Yong Chun Kim
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Publication number: 20080106329Abstract: Provided are an apparatus for adjusting frequency characteristic and Q factor of a low pass filter (LPF) and a method thereof. The apparatus includes: a frequency comparing unit for calculating a first square value and a second square value, and comparing a first reference value with the first and the second square values; a frequency adjusting unit for adjusting the frequency characteristic to range the first reference value between the first square value and the second square value; a Q factor comparing unit for calculating a third square value, and comparing a second and a third reference values with the third square value; a control unit for activating the Q factor comparing unit when the frequency characteristic is completely adjusted; and a Q factor adjusting unit for adjusting the Q factor to range the third square value between the second reference value and the third reference value.Type: ApplicationFiled: October 30, 2007Publication date: May 8, 2008Inventors: Seung-Sik LEE, Bong-Hyuk PARK, Chang-Wan KIM, Sang-Sung CHOI