Patents by Inventor Ki-Chul Lee
Ki-Chul 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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Publication number: 20240145935Abstract: An antenna apparatus includes: a parabolic reflector; a dielectric support pedestal; a sub-reflector connected to an upper part of the dielectric support pedestal; and a waveguide connected to a lower part of the dielectric support pedestal, wherein the parabolic reflector has a curved surface in which a ratio of a focal length to a diameter is greater than a preset value, and at least one corrugation configured to suppress a cross polarization is formed in a region of the dielectric support pedestal.Type: ApplicationFiled: October 31, 2022Publication date: May 2, 2024Inventors: Byung Chul PARK, Seung Ho KIM, Kun Sup KWON, Jong Wan HEO, Sung Jae LEE, Ki Min HWANG
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Patent number: 11974115Abstract: An active sound design (ASD) tuning device and a method thereof may include an ASD device that generates a virtual engine sound for each vehicle situation and a control device that outputs a composite sound by correcting and synthesizing the virtual engine sound and an internal sound measured for each vehicle situation based on a binaural vehicle impulse response (BVIR).Type: GrantFiled: September 8, 2021Date of Patent: April 30, 2024Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Ki Chang Kim, Dong Chul Park, Eun Soo Jo, Jin Sung Lee
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Publication number: 20240101803Abstract: Disclosed are a thermoplastic elastomeric composition for vehicle mounts which has improved surface energy and compression set while solving reduction in wear strength, by blending EPDM rubber, polypropylene, silicon, and poly(styrene-ethylene-butadiene-styrene) (SEBS) in appropriate amounts, and a molded article including the same.Type: ApplicationFiled: May 2, 2023Publication date: March 28, 2024Inventors: Sang Hyun Lee, Young Chul Shin, Ji Hye Park, Ki Hyun Cho, Han Sang Lee, Kyoung Min Hong, Ki Jae Kim
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Patent number: 11932549Abstract: It is introduced that a device of manufacturing lithium sulfate comprising: a reaction body in which a reaction of lithium phosphate and sulfuric acid is performed, the reaction body being divided into an upper space and a lower space; a pressurizer for applying pressure to the inside of the reaction body; a stirrer disposed in the upper space for stirring the lithium phosphate and sulfuric acid to produce a mixture containing lithium sulfate and phosphoric acid; and a filter disposed inside the reaction body and separating the filtrate containing the phosphoric acid into the lower space by filtering the mixture.Type: GrantFiled: August 2, 2019Date of Patent: March 19, 2024Assignees: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGYInventors: Juyoung Kim, Ki Young Kim, Woonkyoung Park, Jung Kwan Park, Woo Chul Jung, Kwang Seok Park, Hyun Woo Lee, Sang Won Kim, Heok Yang, Seung Taek Kuk
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Patent number: 11403898Abstract: Provided is a multi-locking device including a locking device management unit configured such that, when a user requests same to grant a right to open/close a door, same converts information regarding a granted right regarding the door into a QR code, outputs same, and provides same to the user, a door locking device configured to receive the information regarding a granted right regarding the door from the locking device management unit, and a QR code reader unit configured to receive the QR code from the user and provide same to the door locking device.Type: GrantFiled: October 5, 2020Date of Patent: August 2, 2022Inventor: Ki Chul Lee
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Publication number: 20220148353Abstract: Provided is a multi-locking device including a locking device management unit configured such that, when a user requests same to grant a right to open/close a door, same converts information regarding a granted right regarding the door into a QR code, outputs same, and provides same to the user, a door locking device configured to receive the information regarding a granted right regarding the door from the locking device management unit, and a QR code reader unit configured to receive the QR code from the user and provide same to the door locking device.Type: ApplicationFiled: October 5, 2020Publication date: May 12, 2022Inventor: Ki Chul LEE
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Patent number: 10594401Abstract: The present disclosure relates to an optical repeater system for 5th generation (5G) mobile communication. The optical repeater system does not require an additional optical wavelength for a plurality of remote units and can increase the transmission capacity by adding a remote unit without incurring an unnecessary cost, thereby facilitating high-speed and large-capacity data transmission. In addition, the optical repeater system can transmit/receive both a high-speed and large-capacity service signal, as an analog optical signal, and a management control signal, as a digital optical signal, between a master unit and a plurality of remote units. Also, the optical repeater system can selectively and differently compensate for propagation delay times of multiple paths between a terminal and a base station in a mobile communication system, especially, in the 5G mobile communication system.Type: GrantFiled: September 28, 2018Date of Patent: March 17, 2020Assignee: FRTEK CO., LTD.Inventors: Byoung-Chul Lim, Young-Jun Won, Youn-Son Hong, Ki-Chul Lee, Jun-Hyun Lee
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Publication number: 20200028590Abstract: The present disclosure relates to an optical repeater system for 5th generation (5G) mobile communication. The optical repeater system does not require an additional optical wavelength for a plurality of remote units and can increase the transmission capacity by adding a remote unit without incurring an unnecessary cost, thereby facilitating high-speed and large-capacity data transmission. In addition, the optical repeater system can transmit/receive both a high-speed and large-capacity service signal, as an analog optical signal, and a management control signal, as a digital optical signal, between a master unit and a plurality of remote units. Also, the optical repeater system can selectively and differently compensate for propagation delay times of multiple paths between a terminal and a base station in a mobile communication system, especially, in the 5G mobile communication system.Type: ApplicationFiled: September 28, 2018Publication date: January 23, 2020Inventors: Byoung-Chul LIM, Young-Jun WON, Youn-Son HONG, Ki-Chul LEE, Jun-Hyun LEE
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Patent number: 9422936Abstract: The present invention relates to a water pump in a vehicle. The water pump in a vehicle includes a pump cover which forms an upper side exterior appearance of the pump for housing an impeller to be rotated, a hollow rotor coupled on the same axis with the impeller to rotate altogether, and a housing coupled to the pump cover to house the rotor and a stator therein, wherein the pump cover includes a first rotation shaft extended toward the hollow in the rotor passed through the impeller, the housing includes a second rotation shaft extended toward the hollow in the rotor, the first rotation shaft has a communication hole formed therein to be in communication with the hollow, and the rotor has a communication passage recessed in a lower end portion thereof to a predetermined depth.Type: GrantFiled: February 6, 2013Date of Patent: August 23, 2016Assignee: KAMTEC INC.Inventors: Seok Ryul Park, Ki Chang Shim, Ki Chul Lee
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Publication number: 20150279619Abstract: Disclosed is a substrate tray which facilitates to realize a large size, and to prevent defects caused by sagging, and a substrate processing apparatus comprising the same, wherein the substrate tray may include a plurality of straps for supporting a plurality of substrates arranged in a first axis direction; and a support frame connected with the straps in a second axis direction being perpendicular to the first axis direction, wherein a length in each of the straps is larger than a length of the substrate with respect to the second axis direction.Type: ApplicationFiled: November 5, 2013Publication date: October 1, 2015Applicant: Jusung Engineering Co., Ltd.Inventors: Sung Woo Cho, Jong In Kim, Ja Il Park, Ki Chul Lee, Jong-Yong Choi
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Patent number: 7921065Abstract: Provided are an ontology system, a method for managing the ontology system, and a recording medium storing the same. The ontology system includes: a context broker unit for receiving context information from a sensing device and verifying a validity of the received context information; a context managing unit for controlling to generate an ontology structure by transforming the verified context information from the context broker unit to ontology web language (OWL) data and processing the OWL data; a rule-based inference engine unit for transforming the processed context information from the context managing unit to semantic web rule language (SWRL) data and processing the SWRL data through an inference process; a learning managing unit for processing the processed context information from the context managing unit through learning; and a database for storing the context information processed at the context managing unit, the rule-based engine unit, and the learning managing unit.Type: GrantFiled: October 30, 2007Date of Patent: April 5, 2011Assignee: Sungkyunkwan University Foundation For Corporation CollaborationInventors: Jung Hoon Kim, Ki Chul Lee, Jee Hyong Lee, Tae Bok Yoon
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Publication number: 20080208774Abstract: Provided are an ontology system, a method for managing the ontology system, and a recording medium storing the same. The ontology system includes: a context broker unit for receiving context information from a sensing device and verifying a validity of the received context information; a context managing unit for controlling to generate an ontology structure by transforming the verified context information from the context broker unit to ontology web language (OWL) data and processing the OWL data; a rule-based inference engine unit for transforming the processed context information from the context managing unit to semantic web rule language (SWRL) data and processing the SWRL data through an inference process; a learning managing unit for processing the processed context information from the context managing unit through learning; and a database for storing the context information processed at the context managing unit, the rule-based engine unit, and the learning managing unit.Type: ApplicationFiled: October 30, 2007Publication date: August 28, 2008Applicant: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATIONInventors: Jung Hoon Kim, Ki Chul Lee, Jee Hyong Lee, Tae Bok Yoon
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Patent number: 6672861Abstract: A piezoelectric gas lighter in which gas is ignited by means of a spark generated by a piezoelectric device comprises a nozzle assembly including a nozzle and a nozzle cap and a lighter body. The lighter body includes a gas tank, a gas ejection lever and a piezoelectric device. The nozzle has one or more auxiliary ejection holes on the side thereof as well as a main gas ejection path so that the fuel gas flows through two paths, i.e., the main gas ejection path and the auxiliary ejection hole(s). The nozzle assembly of the present invention has a gap between the nozzle and the nozzle cap, so that a small amount of fuel gas flows through the gap to be easily ignited by a spark.Type: GrantFiled: June 27, 2001Date of Patent: January 6, 2004Inventor: Ki-Chul Lee
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Publication number: 20030165786Abstract: A piezoelectric gas lighter by which gas is ignited by means of a spark generated by a piezoelectric device may have ignition trouble due to excessively high gas pressure. Therefore, piezoelectric gas lighters require some apparatus to screen off the excessively high gas pressure. The present invention provides a nozzle assembly composed of a nozzle and a nozzle cap. In a piezoelectric gas lighter incorporating a nozzle assembly and a lighter body having a gas tank, a gas ejection lever and a piezoelectric device, the nozzle has one or more auxiliary ejection holes on the side thereof as well as a main gas ejection path so that the fuel gas flows through two paths, i.e., the main gas ejection path and the auxiliary ejection hole(s). The nozzle assembly of the present invention has a gap between the nozzle and the nozzle cap, so that a small amount of fuel gas flows through the gap to be easily ignited by a spark.Type: ApplicationFiled: June 27, 2001Publication date: September 4, 2003Inventor: Ki-Chul Lee