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1.发明公开公开(公告)号：US20240199425A1
公开(公告)日：2024-06-20
申请号：US17420377
申请日：2019-02-12
Inventor： Jun KANG , Jae Hyuk CHOI , Won Ju LEE , Gyu Jang JO , Se Hyeon KIM , Dae Yeong KIM
IPC: C01B32/164
CPC classification number: C01B32/164 , C01B2202/02 , C01B2202/06 , C01P2004/03
Abstract: The present invention relates to a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby and, more specifically, to a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby, wherein the method enables not only the synthesis of a catalyst at a high rate through plasma generation without a separate reductant but also the continuous mass synthesis of high-purity carbon nanotubes. The technical essences of the present invention are a method for mass synthesis of carbon nanotubes and carbon nanotubes synthesized thereby, the method comprising: a first step of supplying a CNT growth material containing a carbon precursor; a second step of disposing a pair of metal wires in a solution mixed with a metal salt, and applying electric power to the metal wires to generate plasma; and a third step of thermally treating the CNT growth material and the catalyst.
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公开(公告)号：US20240092648A1
公开(公告)日：2024-03-21
申请号：US18269471
申请日：2021-12-28
Inventor： Myoung Jin KIM
IPC: C01F5/40
CPC classification number: C01F5/40 , C01P2002/72 , C01P2002/88 , C01P2006/80
Abstract: A method for recovering high-purity magnesium sulfate includes: a pre-precipitation step of mixing an alkali precipitant and seawater; a concentration step of reacting a precipitate formed in the pre-precipitation step with sulfuric acid, followed by filtering to obtain a first eluate; a first precipitation step of adding ethanol to the first eluate, and then removing a first precipitated solid to obtain a second eluate; and a second precipitation step of precipitating magnesium sulfate solid by further adding ethanol to the second eluate from which the first precipitated solid has been removed.
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公开(公告)号：US20230238915A1
公开(公告)日：2023-07-27
申请号：US18098507
申请日：2023-01-18
Inventor： Hyeung Sik CHOI
Abstract: There is provided a solar power generator having a variable shape which can secure a maximum solar power generation area by being unfolded horizontally and upward in the case of performing solar power generation and can be transformed to have a minimum volume by being transformed into a box shape in the case of not performing solar power generation. The solar power generator includes a base frame, four solar panel members for forming a box which are respectively coupled to four sides of the base frame, a rotation drive source for rotating each of the four solar panel members, a tube member, a lower surface of which is fixed to a center portion of an upper surface of the base frame, an air injection and discharge part, a top plate for the tube member, and a plurality of solar panel assemblies for tube member sidewalls.
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公开(公告)号：US20230166819A1
公开(公告)日：2023-06-01
申请号：US17956782
申请日：2022-09-29
Inventor： Jin Seok Oh
CPC classification number: B63B79/40 , H01M10/425 , H01M10/48 , H01M10/44 , H02J7/0048 , H01M2010/4271 , H01M2220/20
Abstract: A load area tracking type ship battery management system is proposed. The ship battery management system includes a calculation unit for generating SFOC curve data periodically by calculating specific fuel oil consumption (SFOC) versus ship load factors, a LF setting unit for specifying a ship load factor point as a light load factor (LF) point in the SFOC curve data, a HF setting unit for specifying a ship load factor point as a heavy load factor (HF) point, a Emax setting unit configured to obtain a highest point (Emax) of generator efficiency, a Rmin setting unit for calculating battery charging efficiency in the LF to obtain a smallest load factor point (Rmin) bearing a generator load by battery charging, and a Rmax setting unit for calculating battery charging efficiency in the HF to obtain a highest load factor point (Rmax) bearing the generator load by battery discharging.
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公开(公告)号：US11626592B2
公开(公告)日：2023-04-11
申请号：US16892406
申请日：2020-06-04
Applicant: KOREA MARITIME UNIVERSITY INDUSTRY—ACADEMIC COOPERATION FOUNDATION , GLOBAL FRONTIER HYBRID INTERFACE MATERIALS
Inventor： Jun Kang , Kwang Ho Kim
IPC: H01M4/587 , H01M10/0525 , C01B32/05 , H01M4/36
Abstract: The present invention relates to a lithium-carbon composite having cavities formed therein and a method of manufacturing the same, the method including adding and mixing an organic solvent having an aromatic ring with a lithium precursor, arranging a pair of metal wires in the organic solvent, forming a lithium-carbon composite in which a carbon body is doped with lithium through plasma discharge in a solution, and annealing the lithium-carbon composite in order to remove hydrogen from the lithium-carbon composite and form cavities in the lithium-carbon composite. Accordingly, a lithium-carbon composite can be simply synthesized using plasma discharge in a solution, and the synthesized lithium-carbon composite can be annealed to thus form cavities therein, thereby increasing the lithium charge and discharge performance of a lithium secondary battery using the lithium-carbon composite.
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Patent Agency Ranking
公开(公告)号：US10316667B2
公开(公告)日：2019-06-11
申请号：US15197525
申请日：2016-06-29
Inventor： You Taek Kim , Do Yeop Kim , Jun Seong Kim
IPC: F01D5/04
Abstract: Disclosed is an apparatus for decreasing a thrust of a radial flow turbine. The apparatus includes a rotary shaft having an axial through-hole in the interior thereof, a rotor assembled in the rotary shaft and having a rotor hub and rotor blades formed on an outer peripheral surface thereof, a casing configured to isolate the rotary shaft and the rotor from the outside, and a shaft seal configured to maintain a seal between the rotary shaft and the casing.
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7.发明公开公开(公告)号：US20240269918A1
公开(公告)日：2024-08-15
申请号：US18437016
申请日：2024-02-08
Inventor： Do Sik SHIM
IPC: B29C64/118 , B29K705/00 , B33Y10/00
CPC classification number: B29C64/118 , B33Y10/00 , B29K2705/00 , B29K2715/003
Abstract: A method for manufacturing a lightweight part including a porous metal matrix having a functional resin bonded thereto is disclosed. The method includes a porous metal matrix preparation step of preparing a porous metal matrix; a base layer deposition step in which while a nozzle of a FDM (Fused Deposition Modeling) 3D printer moves along a first predetermined movement coordinate path, the nozzle heats and extrudes a resin filament toward a surface of the porous metal matrix to infiltrate a molten resin into closed pores or depressions in the surface of the porous metal matrix, thereby forming a base layer bonded to the surface of the porous metal matrix; and a build layer deposition step in which while the nozzle moves along the first set movement coordinate path or a predetermined second set movement coordinate path different from the first set movement coordinate path, the nozzle heats and extrudes the resin filament toward the base layer such that one or more flat or curved build layers are deposited on the base layer, wherein the resin filament is made of a functional resin material.
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公开(公告)号：US20210305570A1
公开(公告)日：2021-09-30
申请号：US16893693
申请日：2020-06-05
Inventor： Jun Kang , Dae Young Kim
IPC: H01M4/587 , H01M10/054 , H01M4/36
Abstract: The present invention relates to a method of manufacturing a nitrogen-carbon aggregate having a hierarchical pore structure, a nitrogen-carbon aggregate manufactured therefrom, and a sodium ion battery including the same. The technical gist of the present invention includes a method of manufacturing a nitrogen-carbon aggregate having a hierarchical pore structure, a nitrogen-carbon aggregate manufactured therefrom, and a sodium ion battery including the same. The method includes a first step of manufacturing a precursor solution including a nitrogen-containing carbon precursor, a second step of disposing a pair of metal wires in the precursor solution, and a third step of applying electric power to the metal wires to discharge a plasma, so that nitrogen is bonded to carbon of the carbon precursor, thus forming nitrogen-doped carbon nanoparticles of a turbostratic structure including micropores in the surface thereof and then forming an aggregate having a meso-macro hierarchical pore structure due to agglomeration of the carbon nanoparticles. The number of active sites in the aggregate is increased due to nitrogen doping.
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公开(公告)号：US10946937B2
公开(公告)日：2021-03-16
申请号：US16490788
申请日：2017-03-02
Inventor： Seung Gi Gug
Abstract: A buoy system according to one embodiment of the present invention includes a buoy body configured to provide buoyance; a fixing belt configured to fasten the buoy body to a ship structure; an auto-release unit configured to release the buoy body to be buoyed by releasing the fixing belt when a predetermined water pressure is reached; and an auto-reel chain box fixed to the ship structure, being opened in conjunction with releasing of the fixing belt, and including a chain which is reeled out when the buoy body is buoyed, wherein the auto-reel chain box comprises: a weight provided in the auto-reel chain box and being movable upward and downward according to a water pressure and buoyance; a pulley provided in the auto-reel chain box, having the chain wounded thereon and a plurality of teeth on an outer circumferential surface thereof; and a shaft having one end connected to the weight and the other end engaging with the teeth to fix the pulley and provided to be rotatable around a portion fixed in the auto-reel chain box.
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公开(公告)号：US20220228332A1
公开(公告)日：2022-07-21
申请号：US17712228
申请日：2022-04-04
Applicant: The Industry & Academic Cooperation in Chungnam National University , Korea Maritime University Industry - Academic Cooperation Foundation
Inventor： Woo Seok KIM , Jae Ha LEE
Abstract: A safety barrier includes: a body installed on a road; a steel plate portion placed between the body and the road; and an anchor portion passing through the steel plate portion and having an upper part buried in the body and a lower part buried in the road, wherein a first space in which a middle part of the anchor portion other than the upper part and the lower part is placed, is formed between the body and the road, and when an impact is applied to the body, the body is moved while accompanying bending deformation of the middle part in the first space so that the impact is absorbed, and after bending deformation of the middle part occurs, the steel plate portion breaks the anchor portion to implement further movement of the body caused by the impact so that the impact is dispersed.
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