Patents by Inventor Sik Choi
Sik Choi 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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Patent number: 12382631Abstract: A semiconductor memory device includes a first stack including lower conductive patterns separated from each other and stacked on a substrate to form a lower stepped structure, a support pillar passing through the first stack and including an insulating layer, a second stack including upper conductive patterns separated from each other and stacked on the first stack, the upper conductive patterns including an upper stepped structure that does not overlap with the lower stepped structure and the support pillar, a channel structure passing through the second stack and the first stack, and a memory layer surrounding a sidewall of the channel structure.Type: GrantFiled: August 16, 2023Date of Patent: August 5, 2025Assignee: SK hynix Inc.Inventor: Kang Sik Choi
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Publication number: 20250246982Abstract: A motor includes a stator including a plurality of stator coils repeatedly mounted in a circumferential direction of the stator; a rotor mounted inside the stator to be rotatable about a rotation shaft and including a plurality of rotor coils interacting with the stator coils; and an auxiliary magnet mounted between the rotation shaft and the rotor coils in a radial direction of the rotation shaft.Type: ApplicationFiled: September 27, 2024Publication date: July 31, 2025Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Hyung Kwan JANG, Hoo Dam LEE, Kyung Sik CHOI, Jun Hyeok CHOI, Byung Ho MIN, Tae Gyu LEE
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Publication number: 20250245354Abstract: An electronic system comprising a storage device configured to generate a device public key and a device private key based on a device CDI generated from a device DICE, generate a host certificate including a first device signature generated by signing a host public key with the device private key in response to receiving a request of generating the host certificate including the host public key, and send a request of generating a device certificate including the host certificate and the device public key; and a host device configured to generate the host public key and a host private key based on a host CDI generated by a host DICE, generate the device certificate including a first host signature generated by signing the device public key with the host private key in response to the request of generating the device certificate, and send the device certificate to the storage device.Type: ApplicationFiled: July 11, 2024Publication date: July 31, 2025Applicant: Samsung Electronics Co., Ltd.Inventors: Seung-Ho LEE, Yun-Ho YOUM, Myung-Sik CHOI
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Patent number: 12358824Abstract: A dewatering machine includes a screen, a screw and at least one moisture content control wing. The screen has a hollow inside, has an inlet portion through which livestock manure is inputted at a first side and an outlet portion through which dehydrated livestock manure is outputted at a second side, and has a plurality of moisture exhaust holes penetrating from an inside of the screen to an outside of the screen. The screw includes a rotation axis and a main wing formed into a spiral shape along a longitudinal direction of the rotation axis. At least one moisture content control wing is disposed between the main wings adjacent to the outlet portion, and is formed into a spiral shape along the longitudinal direction of the rotation axis.Type: GrantFiled: June 24, 2021Date of Patent: July 15, 2025Assignee: Korea Institute of Machinery & MaterialsInventors: Gi Chun Lee, Tae Yeon Nam, Yong-Bum Lee, Jong-Won Park, Dong Cheon Baek, Hak Yong Eom, Jong Sik Choi, Kye Suk Lee, Chung Kwang Yang
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Publication number: 20250222991Abstract: In a vehicle component fastening device, the vehicle component fastening device includes: a detachable unit assembled to a vehicle body to form an internal space in a vehicle; an assembly module which is provided on the vehicle body and to which the detachable unit is selectively coupled, wherein, inside the module, a circular magnetic body is rotatably mounted, and in response to the rotation of the circular magnetic body, the detachable unit is mechanically fastened to the vehicle body and a magnetic circuit is changed simultaneously therewith so that the detachable unit is magnetically fastened to the vehicle body; and a detachable module configured to rotate the circular magnetic body inside the assembly module by receiving power externally or from the vehicle.Type: ApplicationFiled: May 30, 2024Publication date: July 10, 2025Applicants: Hyundai Motor Company, Kia CorporationInventors: Jae Seung Lee, Won Ki Song, Jin Ho Hwang, Joong Hyun Shin, Hyung Sik Choi
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Patent number: 12350272Abstract: Pyridopyrimidinone derivatives and pharmaceutical compositions containing the same for use as an Axl inhibitor for the treatment of a disease or condition mediated by Axl such as cancer and metastasis, are disclosed. Also disclosed are methods for treating a Axl-mediated disease or condition by administering to a subject a therapeutically effective amount of the pyridopyrimidinone derivative.Type: GrantFiled: June 26, 2019Date of Patent: July 8, 2025Assignee: OSCOTEC INC.Inventors: Jung-Ho Kim, Jang-Sik Choi, Hee Kyu Lee, Dong-Sik Jung, Sung-Ho Park, Yung-Geun Choi
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Publication number: 20250219640Abstract: A semiconductor device includes a retention circuit configured to retain a data value during a power gating operation, a non-retention circuit configured not to retain a data value during the power gating operation, a clock management unit (CMU) configured to provide a first operation clock to the retention circuit and provide a second operation clock to the non-retention circuit, and a power management unit (PMU) configured to provide a reference clock used to generate the first and second operation clocks to the CMU, generate a first isolation signal to permit a first signal to be output from the CMU, and generate a second isolation signal to permit a second signal to be output from the retention circuit and to permit a third signal to be output from the non-retention circuit.Type: ApplicationFiled: August 1, 2024Publication date: July 3, 2025Inventors: Yoo Seok Son, Se Hun Kim, Yun Ju Kwon, Won Soo Kim, Sae Na Yuk, Youn-Sik Choi
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Publication number: 20250214403Abstract: A detachable modular vehicle door includes a frame module hinge-connected to a vehicle and configured to be opened and closed, a skin module assembled to the frame module and configured to cover an outside of the frame module, and an interior module disposed inside the frame module and configured to cover an inside of the frame module and assembled to the skin module with the frame module interposed therebetween.Type: ApplicationFiled: July 24, 2024Publication date: July 3, 2025Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, AJIN INDUSTRIAL CO., LTD.Inventors: Doo-Young Jung, Ki-Hyun Choi, Hyung-Sik Choi, Jeung-Tae Kim, Nam-Hee Yun, Hoon-Ju Jo
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Publication number: 20250202297Abstract: A motor includes a stator including a plurality of stator coils repeatedly arranged in a circumferential direction. The motor also includes a rotor provided inside the stator to be rotatable about a rotating shaft. The rotor includes a plurality of rotor coils interacting with the plurality of stator coils to generate rotational force. The plurality of the rotor coils are repeatedly arranged in the circumferential direction and are paired in twos to implement an N-pole or an S-pole.Type: ApplicationFiled: April 24, 2024Publication date: June 19, 2025Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Hyung Kwan Jang, Hoo Dam Lee, Kyung Sik Choi, Jun Hyeok Choi, Byung Ho Min, Tae Gyu Lee
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Publication number: 20250202318Abstract: A driving motor cooling system includes a storage tank configured to store a cooling medium therein, a cooling case configured to surround an outer circumferential surface of a normal conduction driving motor while being formed with a flow space configured to allow the cooling medium to flow therein and formed with inlet and outlet pipes for the cooling medium configured to connect the flow space to an outside, a cooling line configured to interconnect the storage tank and the inlet pipe, thereby allowing the cooling medium to be supplied to the cooling case, a control valve provided at the cooling line, and a controller including a memory storing a reference temperature while being configured to control the control valve through comparison of a temperature of the driving motor with the reference temperature, thereby controlling cooling of the driving motor through the cooling medium.Type: ApplicationFiled: May 7, 2024Publication date: June 19, 2025Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Hyung Kwan Jang, Hoo Dam Lee, Kyung Sik Choi, Jun Hyeok Choi, Byung Ho Min, Tae Gyu Lee
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Publication number: 20250198228Abstract: A docking system between a vehicle and a building and a control method therefor include an entrance frame configured to extend in a direction towards a vehicle door, an external door provided at a side of the vehicle door to be opened, an internal door spaced from the external door and provided at a side of the building to be opened, and a sealing unit inserted into the entrance frame to be provided between the external door and the internal door, and configured to selectively extend in the direction toward the vehicle door to connect an internal space of the vehicle and an indoor space of the building into one space.Type: ApplicationFiled: March 5, 2025Publication date: June 19, 2025Applicants: Hyundai Motor Company, Kia CorporationInventors: KI HYUN CHOI, Hyung Sik CHOI, Sun In YOU, Sang Heon LEE, Ji Hyun SONG, Won Chan LEE
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Publication number: 20250188642Abstract: A method of forming a high-temperature superconducting single crystal is capable of facilitating a high-temperature superconducting single crystal containing rare-earth metals to grow using a multilayer seed. The method includes: preparing a rare earth barium copper oxide (ReBCO)-based precursor containing rare-earth metals; preparing a plurality of seeds that differ in lattice constant; placing the prepared seeds on top of the precursor through stacking; melting a portion of the precursor by heating the precursor to a peritectic temperature thereof or higher; and growing a single crystal by cooling the precursor to a crystal growth temperature thereof to match a crystal orientation of the seeds. Despite being used to increase the area and maintain the soundness of the single-crystalline specimen in most single-crystal growth, a buffer herein is to facilitate a single crystal of a new composition to grow.Type: ApplicationFiled: June 5, 2024Publication date: June 12, 2025Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Kyung Sik Choi, Hoo Dam Lee, Tae Gyu Lee, Hyung Kwan Jang, Byung Ho Min, Jun Hyeok Choi, Kee Hoon Kim, Yeahan Sur, Jungwoo Lee, Sukho Kim, Chung Ha Park
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Publication number: 20250187412Abstract: A folding type cargo compartment cover unit having a sealing structure includes: a plurality of slats successively arranged on top of a vehicular cargo compartment along one direction of a vehicle; connectors, each being arranged between the adjacent slats; shafts, each hinge-connecting one of the adjacent slats and the connector to each other by passing through the one of the adjacent slats and through the connector; and weather strips, each being formed of flexible material and being provided on at least one of the slat or the connector, thereby sealing a gap between the slat and the connector.Type: ApplicationFiled: June 26, 2024Publication date: June 12, 2025Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, AUTOMOBILE INDUSTRIAL ACEInventors: Hyung-Sik Choi, Jae-Seung Lee, Si-Won Lee, Min-Su Kim, Woo-Sik Yoon
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Publication number: 20250187410Abstract: A foldable loading box cover assembly for a vehicle includes a cover unit including a plurality of slats. The slats are foldable to cover an upper portion of a loading box of the vehicle. The assembly also includes a rail unit disposed in a unfolding direction of the cover unit at the upper portion of the loading box and configured to pop up for guiding an upper end portion and a lower end portion of the plurality of slats to slide. The foldable loading box cover assembly prevents the rail unit from being exposed to an upper portion of the loading box when the upper portion of the loading box is closed.Type: ApplicationFiled: July 9, 2024Publication date: June 12, 2025Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Jae-Seung Lee, Hyung-Sik Choi, Gook-Hyun Jeon, Woo-Sik Yoon, Min-Su Kim
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Publication number: 20250187411Abstract: A foldable loading box cover assembly for a vehicle has an articulated rail and includes a cover unit. The cover unit includes a plurality of slats where each slat has an upper end and a lower end alternately connected to adjacent slats when folded. The cover unit is folded or unfolded to uncover or cover a loading box of a vehicle. The cover assembly includes a main rail installed at an upper end of the loading box, disposed in a reward direction of the vehicle, and configured to guide the lower ends of the plurality of slats. The cover assembly includes an articulated rail installed on the main rail and configured to guide the upper ends of the plurality of slats. When the cover unit is folded, the articulated rail is separated from the main rail to guide the upper ends of the plurality of slats.Type: ApplicationFiled: November 21, 2024Publication date: June 12, 2025Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Jae-Seung Lee, Hyung-Sik Choi, Gook-Hyun Jeon, Woo-Sik Yoon, Min-Su Kim
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Patent number: 12325894Abstract: Provided herein is a nickel recovering method, comprising: (A-i) a reduction heat treatment process for thermally treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product produced by the reduction heat treatment process; (A-ii) a roasting process for thermally treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue produced by the first leaching process and calcine produced by the roasting process; (D) a neutralization process for neutralizing the second leachate produced by the second leaching process; (E) a purification process for removing impurities contained in the neutralized solution produced by the neutralization process; and (F) a reduction process for performing a hydrogen reduction method on the purified solution produced by the purification process to recover nickel from the purified solution.Type: GrantFiled: August 22, 2024Date of Patent: June 10, 2025Assignees: KOREA ZINC CO., LTD., KEMCOInventors: Heon Sik Choi, Je Joong Lee
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Publication number: 20250185231Abstract: A semiconductor device includes a horizontal arrangement of switching elements including nano sheets, horizontal conductive lines, vertical conductive lines, and data storage elements. The horizontal conductive lines surround the nano sheets. Each of the vertical conductive lines is coupled to a corresponding one of first edges of the nano sheets in the horizontal arrangement. Each of the data storage elements is coupled to a corresponding one of second edges of the nano sheets in the horizontal arrangement. The semiconductor device further includes supporters, a first spacer, and a second spacer. The supporters are disposed between the vertical conductive lines. The first spacer has a single layer structure disposed between the data storage elements and the horizontal conductive lines and surrounding the nano sheets. The second spacer has a multi-layer structure disposed between the vertical conductive lines and the horizontal conductive lines and surrounding the nano sheets.Type: ApplicationFiled: December 2, 2024Publication date: June 5, 2025Inventors: Jeong Hoon KWON, Dong Il SONG, Kang Sik CHOI
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Publication number: 20250182795Abstract: A semiconductor device includes a first substrate; a memory cell array, a second substrate, and a back-side power distribution network. The memory cell array includes memory cells that are vertically stacked over the first substrate. The second substrate including a front side facing the memory cell array and a back side at a higher level than the front side. The second substrate further includes a plurality of control circuits for controlling the memory cells. The back-side power distribution network includes a power interconnection that penetrates the second substrate and supplies power to the control circuits from the back side of the second substrate. The memory cell array is electrically connected to the plurality of control circuits of the second substrate by a bonding structure.Type: ApplicationFiled: November 29, 2024Publication date: June 5, 2025Inventors: Hong Seong KANG, Byung Ho LEE, Ilsup JIN, Jin Won PARK, Kang Sik CHOI
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Publication number: 20250185301Abstract: A semiconductor device includes switches including nano sheets and horizontal conductive lines surrounding the nano sheets. The semiconductor device includes first contact nodes formed on first edges of the nano sheets, and vertical conductive lines including pyramid portions surrounding the first contact nodes. Each of the vertical conductive lines is coupled to a corresponding one of the nano sheets. The semiconductor device includes data storage devices each coupled to a corresponding one of second edges of the nano sheets. The semiconductor device includes a supporter surrounding the vertical conductive lines.Type: ApplicationFiled: December 2, 2024Publication date: June 5, 2025Inventors: Jeong Hoon KWON, Dong Il SONG, Kang Sik CHOI
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Publication number: 20250180291Abstract: An electrode drying device includes: a drying chamber having an inlet for receiving the electrode substrate on one side and an outlet for discharging the electrode substrate on other side; a piston rod positioned inside the drying chamber, extending upwardly and downwardly to press against both end portions in the width direction of an electrode substrate; a cylinder for moving a piston rod up and down in the thickness direction of the electrode substrate; and a plate coupled to an end facing the electrode substrate of the piston rod, and extending in a direction perpendicular to the width direction of the electrode substrate, so that even, the piston rod presses on the two end portions to suppress the bending phenomenon of the two end portions, and the plate coupled with the piston rod blocks the hot air applied to the two end portions to prevent excessive drying by hot air.Type: ApplicationFiled: November 24, 2023Publication date: June 5, 2025Applicant: LG Energy Solution, Ltd.Inventors: Soon Sik Choi, Oh Cheol Kwon, Ji Hwan Kim, Jeong Won Lee