Patents by Inventor Hochan An
Hochan An 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: 20240131499Abstract: Organocatalysts can be engineered to mimic biological enzymes for use in a variety of industrially relevant chemical reactions. The organocatalyst comprises a chemical catalyst that is made by imidation of an amine-containing compound to form an N-substituted maleimide and appending the N-substituted maleimide on a furan-containing compound by Diels-Alder reaction and hydrogenation. The N-substituted maleimide may also be made by reacting a protected maleimide and compound containing a primary alkyl halide moiety. The organocatalysts are engineered to append chemical functionalities of amino acids such as glutamic acid for catalyzing hydrolysis of lactose. The organocatalyst further comprises a support to immobilize the chemical catalyst which plays the role of a scaffold to stabilize catalytic active sites and bind the reactants nearby the active sites, similar to a protein scaffold in biological catalysts.Type: ApplicationFiled: September 21, 2023Publication date: April 25, 2024Inventors: Hochan Chang, George Huber, James Dumesic
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Publication number: 20240100911Abstract: A heat pump system includes a cooling apparatus in which a coolant is circulated, a compressor to compress a refrigerant, a condenser connected to the compressor through a refrigerant line and configured to condense the refrigerant by heat-exchanging with the refrigerant and the coolant, an evaporator connected to the condenser through the refrigerant line and configured to evaporate the refrigerant by heat-exchanging with the refrigerant and the coolant, a gas injection device provided in the refrigerant line between the condenser and the evaporator and configured to selectively expand and flow the refrigerant and selectively supply some of the refrigerant to the compressor, a refrigerant connection line including a first end connected to the refrigerant line and a second end connected to the gas injection device between the compressor and the evaporator, and a chiller in the refrigerant connection line for adjusting a temperature of the coolant by heat-exchange.Type: ApplicationFiled: February 9, 2023Publication date: March 28, 2024Inventors: Jeawan Kim, Hochan An, Wan Je Cho, Hoyoung Jeong, Man Hee Park, Yeong Jun Kim, Jae Yeon Kim, Yeonho Kim
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Publication number: 20240048704Abstract: The present invention relates to a method and apparatus for performing encoding and decoding using a variably-sized quantization coefficient group, in quantization coefficient group encoding and decoding of video compression technology.Type: ApplicationFiled: October 19, 2023Publication date: February 8, 2024Inventors: Yongjo Ahn, Donggyu Sim, Hochan Ryu, Seanae Park, Woong Lim
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Publication number: 20240034129Abstract: An embodiment heat pump system for a vehicle includes a first circuit including a radiator and a first valve in a first line, a second circuit including a first water pump, a second valve, and a third valve provided in a second line, a third circuit including electrical equipment provided in a third line, a fourth circuit including second water pump and a fourth valve provided in a fourth line, a fifth circuit including a battery module provided in a fifth line, a sixth circuit including a third water pump and a cooler provided in a sixth line, a seventh circuit including a fourth water pump and a heater provided in a seventh line, and a centralized energy module including a condenser, a chiller, and an evaporator.Type: ApplicationFiled: December 13, 2022Publication date: February 1, 2024Inventors: Jae Yeon Kim, Wan Je Cho, Seong-Bin Jeong, Yeonho Kim, Jeawan Kim, Hoyoung Jeong, Man Hee Park, Hochan An, Tae Hee Kim
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Publication number: 20240010046Abstract: An embodiment heat pump system for a vehicle includes a cooling apparatus including a radiator and a multi-way valve connected by a first coolant line and configured to circulate a coolant in the first coolant line, a second coolant line including first and second ends connected to the multi-way valve and equipped with a first water pump and an electrical component, a third coolant line including first and second ends connected to the multi-way valve and equipped with a second water pump and a battery module, a chiller provided on the third coolant line, connected to a refrigerant line of an air conditioner device through a refrigerant connection line, and configured to adjust a temperature of the coolant circulated in the third coolant line, and a gas injection device configured to selectively expand a refrigerant and to selectively supply some of the refrigerant to a compressor.Type: ApplicationFiled: December 2, 2022Publication date: January 11, 2024Inventors: Jeawan Kim, Hochan An, Wan Je Cho, Hoyoung Jeong, Man Hee Park, Yeong Jun Kim, Jae Yeon Kim, Yeonho Kim
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Publication number: 20230415539Abstract: An embodiment is a heat pump system for a vehicle, including a first cooling device including a first radiator, a first water pump, and a first valve connected by a first coolant line, a second cooling device including a second radiator and a second water pump connected by a second coolant line, a third cooling device including a third coolant line connected to the second cooling device through a first valve, a third water pump provided on the third coolant line, and a battery module and, a chiller provided on the third coolant line, and a gas injection device configured to selectively expand a refrigerant supplied from an internal condenser included in an air conditioner and supply the expanded refrigerant to a heat exchanger of the air conditioner, and selectively supply a portion of the refrigerant to a compressor.Type: ApplicationFiled: November 9, 2022Publication date: December 28, 2023Inventors: Jeawan Kim, Hochan An, Yeonho Kim, Man Hee Park, Yeong Jun Kim, Jae Yeon Kim, Hoyoung Jeong
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Patent number: 11838509Abstract: The present invention relates to a method and apparatus for performing encoding and decoding using a variably-sized quantization coefficient group, in quantization coefficient group encoding and decoding of video compression technology.Type: GrantFiled: July 25, 2022Date of Patent: December 5, 2023Assignees: DIGITALINSIGHTS INC., KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATIONInventors: Yongjo Ahn, Donggyu Sim, Hochan Ryu, Seanae Park, Woong Lim
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Patent number: 11831510Abstract: A service function chaining system is provided. The service function chaining system includes a PDP management module implementing SFC entities in consideration of an order of a service function chain (SFC) on a programmable data plane (PDP) and an SFC management module that transmits a first SFC entity information, which is information on SFC entities to be implemented on the PDP, to the PDP management module or transmits an SFC rule to a node included on the PDP, and the PDP management module includes a receiving unit for receiving the first SFC entity information, a processing unit for generating a second SFC entity information by processing the first SFC entity information to enable the SFC entities to be implemented on the PDP and to be processed according to an SFC order, and implementing unit for implementing the SFC entities on the PDP using the second SFC entity information.Type: GrantFiled: August 13, 2019Date of Patent: November 28, 2023Assignee: Korea University Research and Business FoundationInventors: Sangheon Pack, Jaewook Lee, Haneul Ko, Hochan Lee
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Publication number: 20230363108Abstract: An embodiment water supply module includes a reservoir tank partitioned to accommodate a first coolant and a second coolant having different temperatures. A heat exchanger is coupled to the reservoir tank and includes a first coolant passage and a second coolant passage through which the first coolant and the second coolant flow and a refrigerant passage capable of exchanging heat with the first coolant passage and the second coolant passage. A controller is coupled to the reservoir tank and includes a directional control valve configured to control a flow of the first coolant and the second coolant in a plurality of directions.Type: ApplicationFiled: September 7, 2021Publication date: November 9, 2023Inventors: Yeonho Kim, Hochan An, Jeawan Kim, Hoyoung Jeong, Jae Yeon Kim, Man Hee Park, Jeong Wan Han, Ho Sung Kang, Hyuk Kim, Ji Hoon Choi
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Patent number: 11807076Abstract: A dual compressor for a vehicle comprises a first motor, a first shaft connected to the first motor to transmit a torque of the first motor, a first compressing unit connected to the first shaft to compress a refrigerant according to the operation of the first motor, a second motor, a second shaft connected to the second motor to transmit a torque of the second motor, a second compressing unit connected to the second shaft to compress a refrigerant according to the operation of the second motor, and an inverter electrically connected to the first and second motors to drive the first and second motors by converting DC power supplied from a vehicle into AC power, and controlling the output of the first compressing unit or the second compressing unit by controlling the power applied to the first motor or the second motor.Type: GrantFiled: October 29, 2021Date of Patent: November 7, 2023Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DOOWON HEAVY INDUSTRIAL CO., LTD.Inventors: Jae Yeon Kim, Yeonho Kim, Hochan An, Jeawan Kim, Seung Bin Jung, Sang Soo Kim, Dong Lim Nam
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Patent number: 11760153Abstract: A heat pump system for a vehicle utilizes one chiller in which a coolant and a refrigerant are heat-exchanged to adjust a temperature of a battery module, and utilizes a sub-CE module (sub-centralized energy module) with waste heat of an electrical component in a heating mode of the vehicle to improve heating efficiency.Type: GrantFiled: October 29, 2021Date of Patent: September 19, 2023Assignees: Hyundai Motor Company, Kia CorporationInventors: Jae Yeon Kim, Yeonho Kim, Hochan An, Jeawan Kim, Yunho Hwang
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Publication number: 20230230864Abstract: A semiconductor fabrication facility including raceways on a ceiling of a structural construction and extending in one direction, a vehicle rail assembly coupled to the raceways, outer jig rails on outer sidewalls of the raceways and adjacent to the vehicle rail assembly, and an outer jig on the outer jig rails and configured to allow the vehicle rail assembly to move along the outer jig rails may be provided.Type: ApplicationFiled: August 24, 2022Publication date: July 20, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: Youngon OH, Youngcheol JANG, Jihun KIM, Sanghyuk PARK, Sangho YOON, SeungYeob LEE, Chul Min LEE, Hochan LEE, Jaegyun JEON, Jeongkwan JUNG, Hyeong Seok CHOO, Dongyeol HAN
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Patent number: 11692058Abstract: A method of making polyesters and polyurethanes from biomass-derived polyols. The polyol is biomass-derived and has the structure: wherein dashed bonds are single or double bonds and R is selected from the group consisting of —OH and ?O. Polyurethanes are made by reacting the polyol with a diisocyanate. Polyesters are made by reacting the polyol with a dicarboxylic acid.Type: GrantFiled: February 26, 2021Date of Patent: July 4, 2023Assignee: Wisconsin Alumni Research FoundationInventors: Hochan Chang, George W. Huber, James A. Dumesic
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Publication number: 20230173892Abstract: A refrigerant circulating apparatus for a vehicle, includes: at least one heat exchanger configured to heat-exchange a refrigerant; at least one valve provided to selectively flow the refrigerant to the at least one heat exchanger; and a refrigerant distribution unit having a first surface on which the at least one heat exchanger is mounted and a second surface on which the at least one valve is mounted, wherein the refrigerant distribution unit includes a plurality of flow paths therein to flow the refrigerant to the at least one heat exchanger according to selective operation of the at least one valve.Type: ApplicationFiled: April 22, 2022Publication date: June 8, 2023Applicants: Hyundai Motor Company, Kia CorporationInventors: Yeonho KIM, Hochan AN, Hoyoung JEONG, Man Hee PARK, Jae Yeon KIM, Jeawan KIM
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Patent number: 11613163Abstract: A heat pump system for a vehicle is configured for eliminating a chiller which is separately configured, adjusting a temperature of a battery module by use of an evaporator where a coolant and a refrigerant exchange heat, and improving heating performance by use of a sub-centralized energy module together with waste heat of electrical equipment in a heating mode of the vehicle.Type: GrantFiled: September 21, 2021Date of Patent: March 28, 2023Assignees: Hyundai Motor Company, Kia CorporationInventors: Jae Yeon Kim, Yeonho Kim, Man Hee Park, Hochan An, Jeawan Kim, Yunho Hwang
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Publication number: 20220371408Abstract: A dual compressor for a vehicle is disclosed. The dual compressor for the vehicle is provided, and comprises a first motor that operates according to whether power is applied, a first shaft connected to the first motor to transmit a torque of the first motor, a first compressing unit connected to the first shaft to compress a refrigerant according to the operation of the first motor, a second motor that operates according to whether power is applied, a second shaft connected to the second motor to transmit a torque of the second motor, a second compressing unit connected to the second shaft to compress a refrigerant according to the operation of the second motor, and an inverter electrically connected to the first and second motors, respectively, to drive the first and second motors by converting DC power supplied from a vehicle into AC power, and controlling the output of the first compressing unit or the second compressing unit by controlling the power applied to the first motor or the second motor.Type: ApplicationFiled: October 29, 2021Publication date: November 24, 2022Inventors: Jae Yeon KIM, Yeonho Kim, Hochan An, Jaewan Kim, Seung Bin Jung, Sang Soo Kim, Dong Lim Nam
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Publication number: 20220360780Abstract: The present invention relates to a method and apparatus for performing encoding and decoding using a variably-sized quantization coefficient group, in quantization coefficient group encoding and decoding of video compression technology.Type: ApplicationFiled: July 25, 2022Publication date: November 10, 2022Inventors: Yongjo AHN, Donggyu SIM, Hochan RYU, Seanae PARK, Woong LIM
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Publication number: 20220324293Abstract: A heat pump system for a vehicle is configured for eliminating a chiller which is separately configured, adjusting a temperature of a battery module by use of an evaporator where a coolant and a refrigerant exchange heat, and improving heating performance by use of a sub-centralized energy module together with waste heat of electrical equipment in a heating mode of the vehicle.Type: ApplicationFiled: September 21, 2021Publication date: October 13, 2022Applicants: Hyundai Motor Company, Kia CorporationInventors: Jae Yeon KIM, Yeonho KIM, Man Hee PARK, Hochan AN, Jeawan KIM, Yunho HWANG
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Publication number: 20220324286Abstract: A heat pump system for a vehicle utilizes one chiller in which a coolant and a refrigerant are heat-exchanged to adjust a temperature of a battery module, and utilizes a sub-CE module (sub-centralized energy module) with waste heat of an electrical component in a heating mode of the vehicle to improve heating efficiency.Type: ApplicationFiled: October 29, 2021Publication date: October 13, 2022Applicants: Hyundai Motor Company, Kia CorporationInventors: Jae Yeon KIM, Yeonho KIM, Hochan AN, Jeawan KIM, Yunho HWANG
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Patent number: 11438591Abstract: The present invention relates to a method and apparatus for performing encoding and decoding using a variably-sized quantization coefficient group, in quantization coefficient group encoding and decoding of video compression technology.Type: GrantFiled: May 22, 2020Date of Patent: September 6, 2022Assignees: DIGITALINSIGHTS INC., KWANGWOON UNIVERSITY INDUSTRY-ACADEMIC COLLABORATION FOUNDATIONInventors: Yongjo Ahn, Donggyu Sim, Hochan Ryu, Seanae Park, Woong Lim