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公开(公告)号：US20250164534A1
公开(公告)日：2025-05-22
申请号：US18941971
申请日：2024-11-08
Inventor： Suyong CHAE
Abstract: Devices and methods for estimating impedance of an output element are described. According to one embodiment, a device for estimating impedance of an output element comprises a data acquisition circuit to acquire measurement data for currents and voltages of the output element connected to a common output node of a first converter module and a second converter module; and an impedance calculation circuit to calculate impedance of the output element using a component corresponding to a switching frequency of the first converter module and a component corresponding to a beat frequency, which corresponds to a difference between the switching frequency of the first converter module and a switching frequency of the second converter module, from current measurement values and voltage measurement values of the output element.
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公开(公告)号：US20250149585A1
公开(公告)日：2025-05-08
申请号：US18657173
申请日：2024-05-07
Applicant: Hyundai Motor Company , Kia Corporation , POSTECH Research and Business Development Foundation
Inventor： Yong Ho Lee , Yoon Sung Lee , Sung Ho Ban , Hui Beom Nam , Jun Ki Rhee , Tae Rim Lee , Jieun Kang , Sungho Kim , Dongjoo Kim , Soojin Park
IPC: H01M4/62 , H01M4/02 , H01M10/052
Abstract: According to embodiments, a binder for a lithium secondary battery comprises a mixture of dextran and gallic acid obtained through physical stirring. As an example, the binder can be prepared by dissolving dextran in a solvent to form a dextran solution, adding gallic acid to the dextran solution, and, after the adding of the gallic acid to the dextran solution, physically mixing the dextran solution including the added gallic acid to form a mixture.
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公开(公告)号：US20250129727A1
公开(公告)日：2025-04-24
申请号：US18744460
申请日：2024-06-14
Inventor： Moon Joo LEE , Myung Hun KIM , Jun Hee CHO
IPC: F01K21/06
Abstract: Provided is an operation method of a heat engine device using a single ion configured to greatly improve the efficiency of a heat engine by performing work in a different way than heat engine apparatuses to which classical thermodynamics applies. With the single ion heat engine device, a heat engine cycle in accordance with an auto engine cycle can be established on a micro-scale. Accordingly, the heat engine device using single ion has the effect of being able to be utilized as a substantially mesoscopic or nano-scale heat engine. This utilization is based on concepts, such as temperature, entropy, and pressure, that vary with features of a micro-miniaturized heat engine and types of thermal reservoirs and on interpretation of a change in engine efficiency.
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公开(公告)号：US20250108555A1
公开(公告)日：2025-04-03
申请号：US18834811
申请日：2023-01-04
Applicant: POSTECH Research and Business Development Foundation , PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
Inventor： Dong-Woo CHO , Byoung Soo KIM , Won-Woo CHO , Min Jun AHN
IPC: B29C64/106 , B29C64/209 , B29C64/264 , B29L31/00 , B33Y10/00 , B33Y70/00 , B33Y80/00
Abstract: The present invention relates to a method for producing an artificial scalp model using a 3D printing-based multi-point multi-nozzles, and an artificial scalp model manufactured by using same, in which a dermal mimetic body can be created by using a plurality of nozzle arrays, a pore mimic structure can be generated, and hair follicle spheroids can then be created by 3D printing. In the method for producing an artificial scalp model using a 3D printing-based multi-point multi-nozzles and the artificial scalp model manufactured by using same, according to the present invention, by mimicking the hair of a healthy scalp, a plurality of arrayed hair follicle cells can be generated by 3D printing, and by using this, the effect of maximizing the treatment effect of scarring alopecia is obtained.
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公开(公告)号：US20250104787A1
公开(公告)日：2025-03-27
申请号：US18885111
申请日：2024-09-13
Inventor： Seyoung KIM , Byoungwoo LEE , Jeonghoon SON , Seungkun KIM
Abstract: The present disclosure relates to a three-terminal synaptic device for artificial neural network learning, a synaptic array using the same, and a method of operating the same. The three-terminal synaptic device includes a first transistor; an electrochemical memory (ECRAM) connected in parallel to the first transistor; and a second transistor connected in series to the parallel structure. Accordingly, the present disclosure can achieve an accuracy improvement of inference and learning operations in an artificial neural network through parallel operation by configuring a cross-point array based on the synaptic device with the three-terminal structure comprised of the electrochemical memory and two transistors.
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Patent Agency Ranking
公开(公告)号：US20250092451A1
公开(公告)日：2025-03-20
申请号：US18967805
申请日：2024-12-04
Inventor： Jeong Wook LEE , Gyoo Yeol JUNG , Chang Ha WOO , Sungho Jang , Giyoung SHIN
IPC: C12Q1/6862 , C12Q1/6832 , C12Q1/6876
Abstract: The present invention relates to a novel probe set for an isothermal one-pot reaction, and uses thereof and, particularly, provides a method for easily, accurately, and quickly diagnosing molecules, in particular, infection diseases, in the field, the method having a form applicable in the field on the basis of a nucleic acid sequence by using a one-pot reaction composition under an isothermal condition. If a molecular diagnostic platform according to the present invention is used, a target sequence can be quickly and accurately detected. Also, elements (reaction buffer, enzyme) needed in a diagnostic process using the present invention are much more simple and convenient than in a conventional antibody-based diagnosis, and, thus, the diagnostic process can be performed by a non-skilled person, and the sensitivity and speed of diagnosis can be increased, as all reactions are unified at a constant temperature without expensive equipment used in general nucleic-acid-based molecular diagnostic technology, and an amplification process is performed automatically during a reaction process.
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公开(公告)号：US20250091733A1
公开(公告)日：2025-03-20
申请号：US18827975
申请日：2024-09-09
Inventor： Jeongrak LEE , Seonghyeon KIM , Anna LEE
Abstract: A thruster for a micro-satellite according to an embodiment of the present disclosure includes a first thrust module configured to generate a first thrust in a first direction, a second thrust module configured to generate a second thrust in a second direction intersecting the first direction, and a control substrate on which the first thrust module and the second thrust module are mounted, the control substrate being configured to control the first thrust module and the second thrust module, in which the first thrust module and the second thrust module includes a plurality of printed circuit boards stacked.
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公开(公告)号：US20250085248A1
公开(公告)日：2025-03-13
申请号：US18291633
申请日：2023-01-20
Inventor： Yong-Young NOH , Gi-Seong RYU
Abstract: A resistive hydrogen sensor comprising a sensing layer having semiconducting single-walled carbon nanotubes (SWCNTs), and a manufacturing method therefor are disclosed. The hydrogen sensor comprises: a substrate; a sensing layer, which is formed on the substrate and comprises semiconducting SWCNTs; and electrodes formed on the surface of the sensing layer in the direction opposite to the direction facing the substrate, or formed between the sensing layer and the substrate, and spaced from each other, and thus has a sensitivity of 5% or higher and a response time of two seconds or less with respect to a hydrogen gas having a hydrogen concentration of 4 vol % in comparison to when there is no hydrogen, and can be operated at a low temperature.
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公开(公告)号：US20250083134A1
公开(公告)日：2025-03-13
申请号：US18266678
申请日：2023-04-19
Inventor： Yongtae KIM , Byungjo LEE , Sangmun JUNG
IPC: B01J23/76 , B01J37/08 , B01J37/16 , C25B1/04 , C25B11/061 , C25B11/089
Abstract: The present invention relates to a Ni—Fe-based catalyst for OER doped with a metal having lower electronegativity than Ni and Fe, and a method for manufacturing the same. More specifically, the present invention offers the advantage of using nickel, a non-noble metal-based active catalyst, which has high economic value without the need for noble metals. The present invention provides a method for manufacturing a Ni—Fe-based catalyst for OER that exhibits excellent activity in oxygen generation reaction by maximizing the surface area compared to existing noble metal-based catalysts, thereby contributing significantly to the cost reduction of hydrogen production.
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公开(公告)号：US12248214B2
公开(公告)日：2025-03-11
申请号：US18304726
申请日：2023-04-21
Inventor： Junsuk Rho , Young-Ki Kim , Joohoon Kim , Won-Sik Kim , Trevon Badloe
IPC: G02F1/1335 , G02F1/1337 , G02F1/1343
Abstract: Provided is a color filter. The color filter includes a nano structure layer including a base substrate and a plurality of nano structures which are disposed to be spaced apart from each other on the base substrate and each of which has an elliptical shape on a plane, and a polarization control layer disposed on the nano structure layer and including liquid crystal molecules of which an alignment direction on a plane parallel to the base substrate is controlled by an electric field to realize excellent color reproducibility.
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