Patents by Inventor Ki Joong Kim
Ki Joong 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: 20250250173Abstract: Polymer waste is converted to graphite and graphitic porous carbons with the aid of solid additives. The air processing developed in this invention overcomes the oxygen diffusion bottlenecks for processing bulk polymer waste, achieving char yield over three orders of magnitude compared to without using solid additives. Thermally stabilized materials can be converted into highly crystalline flake graphite via low-temperature catalytic graphitization with a very high degree of graphitization. The plastics-derived graphite showed excellent electrochemical performance as anode material for lithium-ion battery anodes, capacitors, and supercapacitors. Graphite compositions are described.Type: ApplicationFiled: February 5, 2025Publication date: August 7, 2025Inventors: Ki-Joong Kim, Viet Hung Pham, Yuan Gao, Congjun Wang, Christopher Matranga, Huynh Ngoc Tien
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Publication number: 20250180803Abstract: A mixed-matrix composite integrated fiber-optic (FO) sensor system was developed that reliably operates as a detector for gas-phase and dissolved CO2. A mixed-matrix composite sensor coating on the FO sensor comprising plasmonic nanocrystals and zeolite embedded in a polymer matrix. The mixed-matrix composite FO sensor showed excellent reversibility/stability in a high humidity environment and sensitivity to gas-phase CO2 over a large concentration range. The sensor exhibited the ability to sense CO2 in the presence of other geologically relevant gases. A prototype FO sensor configuration which possesses a robust sensing capability for monitoring dissolved CO2 in natural water was demonstrated. Reproducibility was confirmed over many cycles, both in a laboratory setting and in the field.Type: ApplicationFiled: February 3, 2025Publication date: June 5, 2025Inventors: Ki-Joong Kim, Jeffrey T. Culp, James E. Ellis
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Patent number: 12216310Abstract: A mixed-matrix composite integrated fiber-optic (FO) sensor system was developed that reliably operates as a detector for gas-phase and dissolved CO2. A mixed-matrix composite sensor coating on the FO sensor comprising plasmonic nanocrystals and zeolite embedded in a polymer matrix. The mixed-matrix composite FO sensor showed excellent reversibility/stability in a high humidity environment and sensitivity to gas-phase CO2 over a large concentration range. The sensor exhibited the ability to sense CO2 in the presence of other geologically relevant gases. A prototype FO sensor configuration which possesses a robust sensing capability for monitoring dissolved CO2 in natural water was demonstrated. Reproducibility was confirmed over many cycles, both in a laboratory setting and in the field.Type: GrantFiled: August 8, 2022Date of Patent: February 4, 2025Assignee: Battelle Memorial InstituteInventors: Ki-Joong Kim, Jeffrey T. Culp, James E. Ellis
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Publication number: 20240272072Abstract: An optical fiber comprising a layer of coating composition disposed on the exterior of a glass fiber. The layer of coating composition comprises plasmonic nanocrystals dispersed in a porous polymer such as one or a plurality of polymers with intrinsic microporosity (PIMS). The layer of coating composition may be a composite comprising polymer and functionalized plasmonic nanocrystals. A method of making the coated optic fiber is also described. The coated optic fiber can be used to make a sensor and measure an analyte by measuring light transmission through the fiber.Type: ApplicationFiled: February 9, 2024Publication date: August 15, 2024Inventors: Jeffrey Culp, Ki-Joong Kim, Jeffrey Wuenschell
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Publication number: 20240230030Abstract: A liquefied gas storage tank includes a corner block disposed on a corner portion, wherein the corner block includes a lower block, an upper block and an upper connecting block, the upper block includes a first inner fixing unit and a second inner fixing unit respectively provided inside a first surface and a second surface, bonded and connected to a secondary barrier, and each having a structure in which a primary inner plywood, a primary corner insulating material, and a primary outer plywood are stacked, and an inner bent portion installed at a corner spatial portion between the first inner fixing unit and the second inner fixing unit, and both side surfaces of the inner bent portion that are perpendicular to the secondary barrier each have a height reduced from a total height of each of the first and second inner fixing units.Type: ApplicationFiled: December 14, 2021Publication date: July 11, 2024Inventors: Won Seok HEO, Seong Bo PARK, Hye Min CHO, Ki Joong KIM, Cheon Jin PARK, Min Kyu PARK, Jung Kyu PARK, Byeong Jin JEONG, Dong Woo KIM, Sung Kyu HONG, Gwang Soo GO, Jee Yeon HEO
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Publication number: 20240133519Abstract: A liquefied gas storage tank includes a corner block disposed on a corner portion, wherein the corner block includes a lower block, an upper block and an upper connecting block, the upper block includes a first inner fixing unit and a second inner fixing unit respectively provided inside a first surface and a second surface, bonded and connected to a secondary barrier, and each having a structure in which a primary inner plywood, a primary corner insulating material, and a primary outer plywood are stacked, and an inner bent portion installed at a corner spatial portion between the first inner fixing unit and the second inner fixing unit, and both side surfaces of the inner bent portion that are perpendicular to the secondary barrier each have a height reduced from a total height of each of the first and second inner fixing units.Type: ApplicationFiled: December 14, 2021Publication date: April 25, 2024Inventors: Won Seok HEO, Seong Bo PARK, Hye Min CHO, Ki Joong KIM, Cheon Jin PARK, Min Kyu PARK, Jung Kyu PARK, Byeong Jin JEONG, Dong Woo KIM, Sung Kyu HONG, Gwang Soo GO, Jee Yeon HEO
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Publication number: 20240084969Abstract: The liquefied gas storage tank includes a primary barrier, a primary insulation wall, a secondary barrier, and a secondary insulation wall. In a state where unit elements are arranged adjacent to each other, each of the unit elements being formed by stacking the secondary insulation wall, the secondary barrier, and a fixed insulation wall which is a part of the primary insulation wall, the primary insulation wall may comprise: a connection insulation wall provided in the space between the adjacent fixed insulation walls; first slits formed between the fixed insulation walls and the connection insulation wall when the connection insulation wall is inserted and installed between the adjacent fixed insulation walls; a plurality of second slits formed in a lengthwise direction and a widthwise direction of the fixed insulation walls; and a first insulating filler material for filling the first slits.Type: ApplicationFiled: December 15, 2021Publication date: March 14, 2024Inventors: Seong Bo PARK, Won Seok HEO, Hye Min CHO, Ki Joong KIM, Cheon Jin PARK, Min Kyu PARK, Jung Kyu PARK, Byeong Jin JEONG, Dong Woo KIM, Sung Kyu HONG, Gwang Soo GO, Jee Yeon HEO
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Publication number: 20230039427Abstract: Novel chemical sensors that improve detection and quantification of CO2 are critical to ensuring safe and cost-effective monitoring of carbon storage sites. Fiber optic (FO) based chemical sensor systems are promising field-deployable systems for real-time monitoring of CO2 in geological formations for long-range distributed sensing. In this work, a mixed-matrix composite integrated FO sensor system was developed that reliably operates as a detector for gas-phase and dissolved CO2. A mixed-matrix composite sensor coating on the FO sensor comprising plasmonic nanocrystals and zeolite embedded in a polymer matrix. The mixed-matrix composite FO sensor showed excellent reversibility/stability in a high humidity environment and sensitivity to gas-phase CO2 over a large concentration range. The sensor exhibited the ability to sense CO2 in the presence of other geologically relevant gases, which is of importance for applications in geological formations.Type: ApplicationFiled: August 8, 2022Publication date: February 9, 2023Inventors: Ki-Joong Kim, Jeffrey T. Culp, James E. Ellis
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Patent number: 10879861Abstract: A bias circuit of an amplifying device including amplifying circuits and a bypass circuit responding to a first control signal, includes a first bias circuit, a second bias circuit, and a compensating circuit. The first bias circuit is configured to supply a first base bias voltage to a first amplifying circuit of the amplifying circuits in response to a second control signal. The second bias circuit is configured to supply a second base bias voltage to a second amplifying circuit of the amplifying circuits in response to a third control signal. The compensating circuit is connected to either one or both of the first bias circuit and the second bias circuit, and configured to vary an impedance in response to a fourth control signal, and compensate for either one or both of the first base bias voltage and the second base bias voltage based on the varied impedance.Type: GrantFiled: June 28, 2019Date of Patent: December 29, 2020Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Wook Park, Dae Hee No, Hyun Jun Kim, Bo Hyun Hwang, Jun Goo Won, Da Hye Park, Sung Hwan Park, Ki Joong Kim, Yoshiyuki Tonami
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Publication number: 20200309571Abstract: A system and method for forming a sensor. The method includes forming a template and forming a hydroxy double salt layer intermediate. The method further includes forming a metal-organic framework (MOF) film. A method of forming a sensor. One embodiment of the method includes forming a template and forming a hydroxy double salt layer intermediate. The method further includes forming a metal-organic framework (MOF) film and forming a hybrid MOF/conducting metal oxide structure.Type: ApplicationFiled: March 28, 2019Publication date: October 1, 2020Inventors: Ki-Joong Kim, Paul R Ohodnicki, Scott Evan Crawford
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Publication number: 20200287510Abstract: A bias circuit of an amplifying device including amplifying circuits and a bypass circuit responding to a first control signal, includes a first bias circuit, a second bias circuit, and a compensating circuit. The first bias circuit is configured to supply a first base bias voltage to a first amplifying circuit of the amplifying circuits in response to a second control signal. The second bias circuit is configured to supply a second base bias voltage to a second amplifying circuit of the amplifying circuits in response to a third control signal. The compensating circuit is connected to either one or both of the first bias circuit and the second bias circuit, and configured to vary an impedance in response to a fourth control signal, and compensate for either one or both of the first base bias voltage and the second base bias voltage based on the varied impedance.Type: ApplicationFiled: June 28, 2019Publication date: September 10, 2020Applicant: Samsung Electro-Mechanics Co., Ltd.Inventors: Sang Wook PARK, Dae Hee NO, Hyun Jun KIM, Bo Hyun HWANG, Jun Goo WON, Da Hye PARK, Sung Hwan PARK, Ki Joong KIM, Yoshiyuki TONAMI
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Patent number: 10666211Abstract: A power amplifier circuit includes a bias circuit and an amplifier circuit. The bias circuit includes a first bias circuit to receive a reference voltage and an operation voltage and generate a first bias signal, a bias supply circuit to transmit the base bias signal to a base of a power amplifier, based on the first bias signal input from the first bias circuit, a switching control circuit to transmit a switching signal after a preset delay time based on a driving start signal, and a switching circuit connected between an output node of the first bias circuit and a ground, to operate in an ON state after the delay time in response to the switching signal to form a current path between the output node of the first bias circuit and the ground.Type: GrantFiled: June 21, 2018Date of Patent: May 26, 2020Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Bo Hyun Hwang, Dae Hee No, Jun Goo Won, Ki Joong Kim, Sung Hwan Park, Da Hye Park
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Patent number: 10547307Abstract: A bias circuit providing different bias voltages depending on a power mode through a simple circuit, and a power amplifier having the same are provided. The bias circuit and the power amplifier include a bias setting unit configured to vary a voltage level of a control signal controlling a bias voltage according to an operation of a first transistor being switched-off in a high power mode and switched-on in a low power mode. A bias supplying unit includes a bias supplying transistor switched based on the control signal, to supply the bias voltage having a voltage level according to a switching operation of the bias supplying transistor.Type: GrantFiled: June 15, 2018Date of Patent: January 28, 2020Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Jun Goo Won, Youn Suk Kim, Yoshiyuki Tonami, Ki Joong Kim
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Patent number: 10354115Abstract: The present invention relates to a capacitive fingerprint sensor, and the capacitive fingerprint sensor includes: a fingerprint sensor electrode for sensing a fingerprint of a human body; a first transistor of which a current or an output voltage is changed according to a voltage change of capacitive coupling formed by fingerprint capacitance formed when a fingerprint contacts the fingerprint sensor electrode and coupling capacitance formed for capacitive coupling; a fifth transistor that resets a gate electrode of the first transistor and applies capacitive coupling to the gate electrode of the first transistor through a coupling pulse; a second transistor of which a current or an output voltage is changed due to a difference in the current flowing through the first transistor and a gate voltage is maintained by a capacitor; a third transistor that resets a gate electrode of the second transistor; and a fourth transistor that controls a current flowing through the second transistor or an output voltage of thType: GrantFiled: April 7, 2016Date of Patent: July 16, 2019Assignee: SILICON DISPLAY TECHNOLOGYInventors: Ki Joong Kim, Jin Hyeong Yoo, Bong Yeob Hong, Yong Kuk Kim, Ji Ho Hur
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Publication number: 20190199303Abstract: A power amplifier circuit includes a bias circuit and an amplifier circuit. The bias circuit includes a first bias circuit to receive a reference voltage and an operation voltage and generate a first bias signal, a bias supply circuit to transmit the base bias signal to a base of a power amplifier, based on the first bias signal input from the first bias circuit , a switching control circuit to transmit a switching signal after a preset delay time based on a driving start signal , and a switching circuit connected between an output node of the first bias circuit and a ground, to operate in an ON state after the delay time in response to the switching signal to form a current path between the output node of the first bias circuit and the ground.Type: ApplicationFiled: June 21, 2018Publication date: June 27, 2019Applicant: Samsung Electro-Mechanics Co., Ltd.Inventors: Bo Hyun HWANG, Dae Hee NO, Jun Goo WON, Ki Joong KIM, Sung Hwan PARK, Da Hye PARK
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Patent number: 10274421Abstract: Disclosed herein are embodiments of sensor devices comprising a sensing component able to determine the presence of, detect, and/or quantify detectable species in a variety of environments and applications. The sensing components disclosed herein can comprise MOF materials, plasmonic nanomaterials, redox-active molecules, a metal, or any combinations thereof. In some exemplary embodiments, optical properties of the plasmonic nanomaterials and/or the redox-active molecules combined with MOF materials can be monitored directly to detect analyte species through their impact on external conditions surrounding the material or as a result of charge transfer to and from the plasmonic nanomaterial and/or the redox-active molecule as a result of interactions with the MOF material.Type: GrantFiled: September 7, 2017Date of Patent: April 30, 2019Assignees: Oregon State University, U.S. Department of EnergyInventors: Chih-hung Chang, Ki-Joong Kim, Alan X. Wang, Yujing Zhang, Xinyuan Chong, Paul R. Ohodnicki
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Patent number: 10210373Abstract: Provided is a fingerprint recognition sensor capable of sensing a fingerprint using optical and capacitive methods, the sensor including: a capacitive fingerprint sensing unit that includes a transistor (T2) in which a flowing current is changed depending on an output voltage of a fingerprint sensing electrode capable of sensing the humans fingerprint; and an optical fingerprint sensing unit which changes the flowing current in the transistor (T2) due to a difference in reverse current of a photodiode generated by light and shade depending on existence or non-existence of the fingerprint.Type: GrantFiled: October 31, 2013Date of Patent: February 19, 2019Assignee: SILICON DISPLAY TECHNOLOGYInventors: Ki Joong Kim, Ji Ho Hur, Bong Yeob Hong
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Patent number: 10189003Abstract: Systems and methods for synthesizing nanocrystals using continuous, microwave-assisted, segmented flow reactor.Type: GrantFiled: April 12, 2017Date of Patent: January 29, 2019Assignee: OREGON STATE UNIVERSITYInventors: Ki-Joong Kim, Eric Bradley Hostetler, Gregory Scott Herman, Daniel Alan Peterson, Chih-hung Chang, Brendan Thomas Flynn, Brian Kevin Paul, Richard Paul Oleksak, Padmavathi Chandran, Bob C. Fitzmorris, Gustavo Henrique Albuquerque
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Patent number: 10114587Abstract: A memory device may include one or more multi-channel memories and an interface unit suitable for interfacing the multi-channel memories. The interface unit may include a first data interface suitable for transferring data for the first channel of the multi-channel memories, a second data interface suitable for transferring data for the second channel of the multi-channel memories, and an extra data interface suitable for transferring data for a selected one of the first channel and the second channel so that the data is additionally transmitted.Type: GrantFiled: May 6, 2016Date of Patent: October 30, 2018Assignee: SK Hynix Inc.Inventors: Young-Ook Song, Ki-Joong Kim, Jung-Hyun Kwon, Yong-Ju Kim
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Publication number: 20180294809Abstract: A bias circuit providing different bias voltages depending on a power mode through a simple circuit, and a power amplifier having the same are provided. The bias circuit and the power amplifier include a bias setting unit configured to vary a voltage level of a control signal controlling a bias voltage according to an operation of a first transistor being switched-off in a high power mode and switched-on in a low power mode. A bias supplying unit includes a bias supplying transistor switched based on the control signal, to supply the bias voltage having a voltage level according to a switching operation of the bias supplying transistor.Type: ApplicationFiled: June 15, 2018Publication date: October 11, 2018Applicant: Samsung Electro-Mechanics Co., Ltd.Inventors: Jun Goo WON, Youn Suk KIM, Yoshiyuki TONAMI, Ki Joong KIM