Patents by Inventor An-Ki Cho

An-Ki Cho 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).

  • Plasticizer composition and resin composition including the same
    Patent number: 11407882
    Abstract: Provided are a plasticizer composition, a resin composition and a method of preparing the same. Particularly, a plasticizer comprising a cyclohexane 1,4-diester based material and a citrate-based material. The plasticizer is capable of improving physical properties such as plasticization efficiency, migration, tensile strength, elongation rate, stress migration and light fastness, which are required for sheet formulations, when used as a plasticizer for the resin composition by improving poor physical properties generated due to a structural limitation thereof, and a resin composition including the same are provided.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: August 9, 2022
    Assignee: LG Chem, Ltd.
    Inventors: Hyun Kyu Kim, Mi Yeon Lee, Yun Ki Cho, Jeong Ju Moon, Joo Ho Kim, Seok Ho Jeong
  • METHOD FOR PRODUCING DIESTER-BASED MATERIAL
    Publication number: 20220242814
    Abstract: A method of preparing a raw material mixture by mixing a dicarboxylic acid and a C4-10 mono-alcohol, and obtaining a product mixture including a diester-based material and water by reacting the raw material mixture in the presence of a catalyst. In the first step, at least one among a reactor temperature (Condition A), an alcohol input amount (Condition B), and an inert gas input amount (Condition C) is controlled, and the distinction between a beginning stage of a reaction and an ending stage of the reaction in Conditions A to C above is based on a reaction control point. The reaction control point is a point of time selected at which a conversion rate of the reaction is between 10% and 80%. This method produces a diester-based material with improved reactivity and improved energy expenditure.
    Type: Application
    Filed: September 24, 2020
    Publication date: August 4, 2022
    Inventors: Jeong Ju Moon, Hyun Kyu Kim, Joo Ho Kim, Yun Ki Cho, Seok Ho Jeong, Woo Hyuk Choi
  • MILLIMETERWAVE REPEATER AND DISTRIBUTED ANTENNA SYSTEM FOR POWER TRANSMISSION
    Publication number: 20220224399
    Abstract: Provided is a distributed antenna system using a millimeterwave repeater. The distributed antenna system includes a donor unit configured to receive a downlink millimeter band radio frequency (RF) signal from a gNodeB base station, sum the received RF signal with a communication signal, and a synchronization signal to generate a summation signal, and transmit the summation signal; a transmission unit configured to transmit the summation signal and a power signal for power supply; and a server unit configured to receive the summation signal, separate and amplify the summation signal to transmit an RF signal to a user terminal. Only one of the donor unit and the server unit includes a power supply unit configured to generate the power signal.
    Type: Application
    Filed: February 12, 2021
    Publication date: July 14, 2022
    Applicant: ADRF KOREA, Inc.
    Inventor: Chan Ki CHO
  • AUXILIARY PROPULSION APPARATUS FOR AIR VEHICLE
    Publication number: 20220204178
    Abstract: An auxiliary propulsion apparatus of an air vehicle may include an engine mounted in a fuselage of the air vehicle, a generator configured to be driven using power from the engine, a compressor configured to be driven by the engine or the generator, a battery configured to store electricity generated by the generator, an electricity distributor connected to the generator, the battery and the main propulsion apparatus and configured to distribute electricity generated by the generator to the battery and to a main propulsion apparatus, and at least one nozzle device configured to jet high-pressure gas, supplied from the compressor, to an outside of the fuselage.
    Type: Application
    Filed: July 21, 2021
    Publication date: June 30, 2022
    Inventors: Woo Suk Jung, Gwi Taek Kim, Yoon Cheol Jeon, Hyun Ki Cho
  • POWER MANAGEMENT SYSTEM FOR AIR MOBILITY VEHICLE AND OPERATION METHOD THEREOF
    Publication number: 20220204172
    Abstract: A power management system for an air mobility vehicle includes a plurality of batteries configured to provide power to a propulsion unit of the air mobility vehicle to propel the air mobility vehicle, and a discharge control unit configured to monitor an operation state and a charge state of each battery, determine a discharge mode of each of the plurality of batteries according to the monitored operation state and the monitored charge state, and control whether each of the plurality of batteries is discharged or a discharge rate thereof according to the determined discharge mode.
    Type: Application
    Filed: July 22, 2021
    Publication date: June 30, 2022
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Hyun Ki CHO, Hyun Woo JUN, Hee Kwang LEE
  • BATTERY SYSTEM AND CONTROLLING METHOD OF THE SAME
    Publication number: 20220209544
    Abstract: The present disclosure provides a battery system and a controlling method of the same. The battery system includes a plurality of rechargeable battery packs, and includes a first battery pack that is rechargeable, a second battery pack that is rechargeable independently of the first battery pack, a first switching element that switches the first battery pack between at least a charging node and a discharging node, a second switching element that switches the second battery pack between at least the charging node and the discharging node, and a controller that controls switching states of the first switching element and the second switching element based on usage states and states of charge of the first battery pack and the second battery pack, and thus it is possible to effectively charge a high capacity and high output battery pack.
    Type: Application
    Filed: September 3, 2020
    Publication date: June 30, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Ji Eun KIM, Sang Hoon LEE, Jae Dong PARK, Hyun Ki CHO
  • EMERGENCY POWER MANAGEMENT SYSTEM OF MOBILITY AND CONTROL METHOD THEREOF
    Publication number: 20220200265
    Abstract: An emergency power management system of a mobility, may include a fuse device connected to a battery and including a first circuit and a second circuit in which a first fuse and a second fuse are respectively provided and are connected in parallel, a pyro switch provided between the first circuit and the second circuit, and configured to establish electric connection with the first circuit in ordinary times and to release electric connection with the first circuit and to establish electric connection with the second circuit in a case of emergency, a determiner configured to determine abnormality of the first fuse based on current applied from the high-voltage battery or voltages at opposite end portions of the first fuse, and a controller configured to operate the pyro switch when abnormality occurs in the first fuse.
    Type: Application
    Filed: July 30, 2021
    Publication date: June 23, 2022
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Yoon Cheol JEON, Hyun Woo JUN, Hee Kwang LEE, Hyun Ki CHO, Gwi Taek KIM, Hyun Seok HONG, Woo Suk JUNG
  • CITRATE-BASED PLASTICIZER COMPOSITION AND RESIN COMPOSITION COMPRISING THE SAME
    Publication number: 20220195143
    Abstract: A citrate-based plasticizer composition including a citrate-based composition, and a citrate-based composition including one or more citrates. The citrates are characterized in having an alkyl group derived from an isomer mixture of hexyl alcohol having a degree of branching of 2.0 or less. Stress resistance and mechanical properties can be maintained at values equal or better than conventional plasticizers, the balance between migration and volatile properties and plasticization efficiency can be maintained, and light resistance and heat resistance can be markedly improved by applying the citrate-based plasticizer composition to a resin.
    Type: Application
    Filed: July 29, 2020
    Publication date: June 23, 2022
    Inventors: Hyun Kyu Kim, Seok Ho Jeong, Jeong Ju Moon, Woo Hyuk Choi, Yun Ki Cho, Joo Ho Kim
  • NOISE REDUCTION SYSTEM FOR AIR MOBILITY
    Publication number: 20220194566
    Abstract: A noise reduction system for air mobility, may include a plurality of propeller modules provided on the air mobility and each including an inverter, a motor electrically connected to the inverter, and a propeller mounted to the motor; and a control unit configured to perform PWM control of power to be provided to the inverters to reduce noise attributable to carrier frequencies generated by the plurality of inverters or reduce noise attributable to fundamental frequencies generated by the plurality of motors.
    Type: Application
    Filed: July 16, 2021
    Publication date: June 23, 2022
    Applicants: Hyundai Motor Company, Kia Corporation
    Inventors: Hee Kwang LEE, Hyun Seok Hong, Hyun Ki Cho
  • ULTRA-LOW FRICTION MATERIALS FOR LUBRICATING SURFACES, DEVICES THEREWITH, AND METHODS OF MANUFACTURE AND USE THEREOF
    Publication number: 20220167757
    Abstract: A polymeric material mixture comprising a fluorine-containing polymer, a siloxane polymer, and at least two polymer processing additives (PPA), wherein the at least two polymer processing additives have different chemistries. For example, there can be a flexible coextruded pipe for providing a protective housing for cables, fluids, sludge or solids, the pipe comprising a pair of telescopically related inner and outer layers, where said inner layer is lubricated with the polymeric material mixture.
    Type: Application
    Filed: February 14, 2022
    Publication date: June 2, 2022
    Inventors: H. Thomas Chung, Fei Fan, Sung Ki Cho, Sam Lukubira, Caleb Michael Spradling, Arturo Valencia
  • PLASTICIZER COMPOSITION AND RESIN COMPOSITION INCLUDING THE SAME
    Publication number: 20220162436
    Abstract: The present disclosure relates to a plasticizer composition including a cyclohexane 1,4-diester-based material and a cyclohexane 1,2,4-triester-based material, and may provide a plasticizer maintaining an excellent level of plasticization efficiency when compared with a common phthalate-based plasticizer product and improving mechanical properties, and may also provide a plasticizer having excellent stress resistance as an advantage.
    Type: Application
    Filed: April 28, 2020
    Publication date: May 26, 2022
    Inventors: Hyun Kyu KIM, Yun Ki CHO, Woo Hyuk CHOI, Jeong Ju MOON
  • PLASTICIZER COMPOSITION AND RESIN COMPOSITION INCLUDING THE SAME
    Publication number: 20220162421
    Abstract: The present disclosure relates to a plasticizer composition characterized in including two or more isophthalates of the same carbon number type, in which alkyl groups bonded to two ester groups have the same carbon number; one or more isophthalates of a different carbon number type, in which alkyl groups bonded to two ester groups have different carbon numbers; wherein the different carbon number type includes both a higher alkyl and a lower alkyl, the carbon number of the higher alkyl is 8 to 10, and the carbon number of the lower alkyl is selected from 5 to 7, thereby, when applied to a resin, showing improved viscosity stability, migration resistance and stress resistance, while maintaining and improving plasticization efficiency and mechanical properties to the same or better level.
    Type: Application
    Filed: April 28, 2020
    Publication date: May 26, 2022
    Inventors: Hyun Kyu KIM, Yun Ki CHO, Jeong Ju MOON, Joo Ho KIM, Seok Ho JEONG, Woo Hyuk CHOI
  • Apparatus and method for estimating a slope angle of a road
    Patent number: 11338857
    Abstract: An apparatus and a method are configured for estimating a slope angle of a road. The slope angle of a road is estimated based on a longitudinal slope angle of the road which is calculated based on a Kinematic model, an effective weight corresponding to a control amount of a driver and a filter constant to estimate the slope angle of the road with higher precision in the case of a U-turn, rapid acceleration, or rapid deceleration in which a longitudinal acceleration of the vehicle is remarkably increased. The apparatus includes a controller to estimate the slope angle of the road, based on a longitudinal slope angle of the road which is calculated based on a Kinematic model, an effective weight corresponding to a control amount of a driver and a filter constant, and an output device to output the estimated slope angle of the road.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: May 24, 2022
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sang Heon Lee, Wan Ki Cho
  • COMBINATION STRUCTURE OF SEAT CUSHION FRAME
    Publication number: 20220153174
    Abstract: A combination structure of a seat frame includes: a first and a second side cushion frames installed on a first and a second sides of a seat, and configured to slide forward and rearward, wherein the first and the second sides of the seat are opposite to each other; a center cushion frame provided between the side cushion frames and having a first side fixed to the first side cushion frame; and a support guide device connected between a second side of the center cushion frame and the second side cushion frame, and configured to guide a sliding movement of each of the second side cushion frame and the center cushion frame while supporting weights of the second side cushion frame and the center cushion frame.
    Type: Application
    Filed: June 7, 2021
    Publication date: May 19, 2022
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, Daechang Seat Co.,LTD-Dongtan, Hyundai Transys Inc.
    Inventors: Min Ju LEE, Seung Hyun KIM, Byung Yong CHOI, Sang Hyun LEE, Seon Chae NA, Chan Ki CHO, In Chang HWANG, Dong Hwan KIM, Young Woon CHOI, Jae Jin LEE
  • DEVICE AND METHOD FOR REEL-TO-REEL LASER REFLOW
    Publication number: 20220157769
    Abstract: The present invention relates to a reel-to-reel layer reflow method, which emits a uniformized laser beam, which can easily adjust the emission area, and which is for the purpose of improving productivity. An embodiment of the present invention provides a reel-to-reel layer reflow method comprising the steps of: a) transferring a substrate, which has been wound in a roll type, to one side while unwinding the same; b) forming a solder portion on the substrate; c) seating an emission target element on the solder portion and seating a non-emission target element on the substrate; d) surface-emitting a laser beam to the solder portion, on which the emission target element is seated, such that the emission target element is attached to the substrate; e) inspecting the substrate structure manufactured through said step d); and f) winding the substrate structure in a roll type.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 19, 2022
    Inventors: Byung Rock KIM, Wan Ki CHO, Jae Joon CHOI
  • Folding Seat
    Publication number: 20220118890
    Abstract: Proposed is a folding seat which can be folded by manipulating a lever at various positions so as to improve the utilization of space around the folding seat. The folding seat includes: a seat frame; a seat back frame located at a rear of the seat frame and coupled rotatably to the seat frame or a vehicle; and a first latch part provided with a side support, a first end of the side support being coupled to the vehicle and a second end of the side support being coupled to the rear of the seat frame through a rotation shaft such that the seat frame is rotatable.
    Type: Application
    Filed: October 18, 2021
    Publication date: April 21, 2022
    Inventors: Jae Kwang Shin, Myung Soo Lee, Chan Ki Cho
  • APPARATUS FOR ADJUSTING SEAT OF VEHICLE
    Publication number: 20220111770
    Abstract: An apparatus for adjusting a seat of a vehicle includes a seat back frame, a cushion frame that is moved forward and backward by a motor driving unit, a cushion hinge part connecting the seat back frame and the cushion frame and rotating according to the movement of the cushion frame to adjust the angle of the seat back frame, and a seat back hinge part connecting the seat back frame and the vehicle body and rotating according to the movement of the seat back frame.
    Type: Application
    Filed: March 3, 2021
    Publication date: April 14, 2022
    Inventors: Min Ju Lee, Seunghyun Kim, Byung Yong Choi, Sanghyun Lee, Seon Chae Na, Chan Ki Cho, In Chang Hwang, Donghwan Kim, Youngwoon Choi, Jaejin Lee
  • Electronic device and touch gesture control method thereof
    Patent number: 11281370
    Abstract: Methods and apparatuses are provided for detecting a gesture at an electronic device. The gesture is received through an input module of the electronic device. A direction combination corresponding to the gesture is determined. The direction combination includes a plurality of directions. Information regarding the direction combination is compared with information regarding at least one direction combination, which is stored in a memory of the electronic device. A state of the electronic device is changed from a first state to a second state, using at least one processor of the electronic device, according to a result of comparing the information regarding the direction combination with the information regarding the at least one direction combination.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: March 22, 2022
    Inventors: Jae Wook Lee, An Ki Cho, Jun Hyung Cho
  • FOLDING SEAT
    Publication number: 20220079344
    Abstract: Proposed is a folding seat that is capable of being folding to various positions by controlling a lever and the folding seat is capable of improving utilization of space around the folding seat. According to an embodiment of the present disclosure, the folding seat includes: a seat frame; a seat back frame cross-arranged in back of the seat frame, the seat back frame having a first side rotatably coupled to the seat frame; and a locking portion coupled at a first side thereof to the seat back frame and rotatably coupled at a second side thereof to the seat frame at a position between the seat frame and the seat back frame, wherein the locking portion is configured to be inserted into a rear portion of the seat frame or to be separated from the seat frame according to an operation thereof.
    Type: Application
    Filed: September 9, 2021
    Publication date: March 17, 2022
    Inventors: Jae Kwang SHIN, Myung Soo LEE, Chan Ki CHO
  • Seat apparatus for vehicle
    Patent number: 11273731
    Abstract: A seat apparatus for a vehicle is provided, wherein a base bracket and a moving bracket are mounted to a body floor to lift and lower a seat, and a seat track is mounted to the moving bracket to move the seat in forward and rearward directions, so that the seat is moved and lifted and lowered. Accordingly, since the lifting/lowering structure of the seat is mounted to the body floor, space is secured below the seat, so indoor atmosphere is improved due to the increase of the space efficiency.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: March 15, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Daechang Seat Co., LTD-Dongtan
    Inventors: Hyung Jin Park, Guk Mu Park, Byeong Kwang Kim, Sang Uk Yu, So Young Yoo, Seon Chae Na, Byung Yong Choi, Myung Soo Lee, Chan Ki Cho, Gyeong Jae Lee