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公开(公告)号：US12034392B2
公开(公告)日：2024-07-09
申请号：US17861493
申请日：2022-07-11
Inventor： Yong Jae Lee , Kang Ho Jeong , Young Seul Lim , Jae Hoon Shim , Jung Ik Ha
IPC: H02P27/08 , H02M1/38 , H02M7/5395
CPC classification number: H02P27/08 , H02M1/38 , H02M7/5395
Abstract: An apparatus configured for driving a motor, includes a first inverter including a first switching elements and connected to a first end of each of a windings respectively corresponding to a plurality of phases of the motor, a second inverter including a second switching elements and connected to a second end of each of the windings, a switches including first ends respectively connected to nodes to which the windings and the second switching elements are respectively connected and second ends connected to each other, and a controller configured to drive the motor in one of a first driving mode for driving the motor by maintaining the second switching elements in an open state and performing pulse width modulation control for the first switching elements and a second driving mode for driving the motor by performing pulse width modulation control for the first switching elements and the second switching elements.
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公开(公告)号：US20240215005A1
公开(公告)日：2024-06-27
申请号：US18598447
申请日：2024-03-07
Inventor： Gene Back Hahn , Young Kil Suh , Ui Hyun Hong , Bum Jun Kim , Jeonghyeon Kwon , Wan Choi
IPC: H04W72/0453 , H04W24/10
CPC classification number: H04W72/0453 , H04W24/10
Abstract: An operation method of a first communication node in a communication system may include the steps of: transmitting to a second communication node a first sensing signal through a plurality of reference frequencies included in a first reference frequency set that is set within a first sensing frequency band for a first sensing procedure; receiving a first feedback signal from the second communication node that has received the first sensing signal; identifying information on a first frequency band selected from among a plurality of split frequency bands included in the first sensing frequency band, on the basis of the first feedback signal; and triggering a second sensing procedure in a second sensing frequency band that is determined on the basis of the identified first frequency band.
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113.发明公开公开(公告)号：US20240200108A1
公开(公告)日：2024-06-20
申请号：US16500637
申请日：2018-04-05
Inventor： Gyoo Yeol Jung , Sang Woo Seo , Chae Won Kang , Hyun Gyu Lim
CPC classification number: C12P7/46 , C12N15/70 , C12P5/026 , C12N2800/101 , C12N2830/36 , C12N2840/10
Abstract: The present invention relates to a gene expression cassette including a synthetic 5′ untranslated region (5′ UTR), a promoter, and a regulatory gene; a recombinant vector including a replication origin and the gene expression cassette; a recombinant microorganism which has the recombinant vector introduced thereinto and shows alleviated segregational instability and; a method for preparing a recombinant microorganism having alleviated segregational instability by introducing the recombinant vector thereinto; and a method for quantitatively controlling a plasmid copy number in a recombinant microorganism. According to the present invention, removal of infA and efp, which are genes indispensable for cells, encoding respectively for a translation initiation factor and a protein elongation factor (EF-P), from a microbial chromosome and introduction of the gene expression cassette including the regulatory gene with Escherichia coli serving as a host allow the stable maintenance of plasmids in an antibiotic-free medium without causing intercellular intrinsic variations. In addition, the precise control of expression levels of infA and efp in the recombinant microorganism by means of a promoter can lead to the quantitative control of PCN at high yield as well. Therefore, the present invention can find a broad spectrum of applications in a variety of industries producing recombinant proteins.
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公开(公告)号：US20240199947A9
公开(公告)日：2024-06-20
申请号：US17710947
申请日：2022-03-31
Inventor： Tae-Woo LEE , Seung-Chul LEE , Song-Hee LEE , Sinil CHOI , Jae Il KIM
CPC classification number: C09K11/025 , C08G77/045 , C08K9/04 , C09K11/06 , C09K2211/188
Abstract: The present disclosure relates to a perovskite light-emitting composition, and a method for preparing the same. The method for producing the perovskite light-emitting composition of the present disclosure includes an organic siloxane solvent having very high hydrophobicity and low surface tension as a synthesis solvent, thereby having a large surface tension difference from the perovskite light-emitting particles containing an organic ligand. Through these properties, a dense organic ligand can be attached to the surface of the perovskite nanoparticles, and perovskite light-emitting particles having a high ligand density can be prepared. Accordingly, the perovskite light-emitting particles prepared by the method of the present disclosure have improved dispersion stability, light-emitting properties and long-term storage stability.
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公开(公告)号：US20240194880A1
公开(公告)日：2024-06-13
申请号：US18554630
申请日：2022-04-04
Applicant: Seoul National University R&DB Foundation
Inventor： Jang Wook CHOI , Taegeun LEE
IPC: H01M4/62 , H01M10/0525 , H01M10/0562 , H01M50/414
CPC classification number: H01M4/622 , H01M50/414 , H01M10/0525 , H01M10/0562 , H01M2300/0068
Abstract: The present disclosure relates to a binder for an all-solid-state lithium secondary battery wherein the carboxyl group of mercaptocarboxylic acid is grafted in a butadiene polymer, wherein a molar ratio of the carboxyl group to the butadiene polymer is 0.1-30:100, a binder for an all-solid-state lithium secondary battery containing the same, an all-solid-state lithium secondary battery electrode composite containing the same, a separator in an all-solid-state lithium secondary battery containing the same, and an all-solid-state lithium secondary battery containing the same. Since the binder for an all-solid-state lithium secondary battery of the present disclosure can satisfy stability, solubility, polarity and adhesive property at the same time, it can significantly accelerate the commercialization of an all-solid-state battery based on a wet process.
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Patent Agency Ranking
公开(公告)号：US20240192638A1
公开(公告)日：2024-06-13
申请号：US17904744
申请日：2021-12-30
Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
Inventor： Byoungho LEE , Dukho LEE , Kiseung BANG , Seung-Woo NAM
CPC classification number: G03H1/2202 , G03H1/0443 , G03H1/0486 , G03H1/0808 , G03H1/12 , G03H2001/045 , G03H2001/0833 , G03H2001/2239
Abstract: A holographic display apparatus and a hologram optimization method for the apparatus are provided. The holographic display apparatus includes a focus-forming optical element configured to form a plurality of foci by receiving plane waves; a collimating lens configured to propagate, as plane waves, light incident through the plurality of foci; and a spatial light modulator configured to generate a holographic image by overlapping a plurality of plane waves incident from the collimating lens.
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公开(公告)号：US20240175394A1
公开(公告)日：2024-05-30
申请号：US18477427
申请日：2023-09-28
Inventor： Song Hun CHA , Do Hoon KIM , Se Hyeok LEE , Min Soo KIM , Hong Geun HA
CPC classification number: F02C3/34 , F01K23/106 , F02C7/143
Abstract: A combined power generation system includes a gas turbine including a compressor configured to compress air, a combustor configured to mix the compressed air from the compressor and fuel and combust a mixture of the compressed air and fuel, and a turbine section in which rotational power is obtained by combustion gases generated by the combustor. The system also includes a heat recovery steam generator (HRSG) in which steam is generated by heat of exhaust gases from the gas turbine, and a steam turbine driven by the steam generated by the HRSG, wherein the HRSG includes a plurality of heat exchangers provided to cool the compressed air by heat exchange between the compressed air and the exhaust gases.
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公开(公告)号：US20240170918A1
公开(公告)日：2024-05-23
申请号：US18550592
申请日：2022-03-17
Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
Inventor： Heonsu JEON , Myeong Eun KIM
CPC classification number: H01S5/11 , H01S5/04256 , H01S5/222 , H01S5/343
Abstract: An embodiment of the present invention provides a photonic crystal semiconductor laser device including an n-type clad layer formed on a first surface of an n-type first substrate, a guide layer formed on the n-type clad layer and including an active layer, a p-type clad layer formed on the guide layer, a p-type contact layer formed on the p-type clad layer, a p-type electrode layer formed on the p-type contact layer, and an n-type electrode layer contacting at least a portion of the first surface of the n-type first substrate or a second surface opposing the first surface, wherein holes penetrating the p-type contact layer, the p-type clad layer, the guide layer including the active layer, and the n-type clad layer are formed in the p-type contact layer, the p-type clad layer, the guide layer including the active layer, and the n-type clad layer, and the holes form a photonic crystal pattern.
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公开(公告)号：US20240165834A1
公开(公告)日：2024-05-23
申请号：US18296312
申请日：2023-04-05
Applicant: Seoul National University R&DB Foundation
Inventor： Taekyun Kim , Dongjun Lee
IPC: B25J19/00 , B25J19/02 , B62D57/032 , F16F15/02
CPC classification number: B25J19/0091 , B25J19/023 , B62D57/032 , F16F15/022
Abstract: Proposed is a neck device for absorbing shock and reducing vibration of a legged mobile robot. The device may include a shock absorber, a sensor platform coupled to a part of the shock absorber, and a variable dynamic vibration absorber mounted on the sensor platform. The shock absorber may be fixed to a body portion of the legged mobile robot and configured to absorb shock and vibration. The sensor platform may include a camera and an inertial measurement unit. The variable dynamic vibration absorber may be configured to adjust an absorption frequency of shock and vibration caused by a movement of the legged mobile robot. The shock absorber and the variable dynamic vibration absorber may reduce shock and vibration transmitted to the sensor platform, so as to reduce movement and rotation of the sensor platform.
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公开(公告)号：US11986693B2
公开(公告)日：2024-05-21
申请号：US17295762
申请日：2019-10-30
Applicant: Seoul National University R&DB Foundation
Inventor： Kyu-Jin Cho , Sung-Sik Yun
IPC: A63B21/04 , A63B21/00 , A63B21/055 , A63B23/04
CPC classification number: A63B21/0407 , A63B21/00076 , A63B21/00181 , A63B21/0552 , A63B21/4005 , A63B21/4015 , A63B2023/0411
Abstract: The present invention relates to a wearable device using a flexible non-powered variable impedance mechanism, wherein the device can induce a user to have a correct posture during a squat exercise or lifting work, and can assist the user's muscular strength. According to the present invention, an angle between a (1-1)th lower string and a (1-2)th lower string and an angle between a (24)th lower string and a (2-2)th lower string change according to a knee angle depending on the user's posture, whereby an impedance mechanism that the user feels through the body changes.
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