Patents by Inventor Je-Wook Chae
Je-Wook Chae 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: 11973219Abstract: A method for pre-lithiation of a negative electrode is disclosed, including the steps of: producing a lithium metal laminate which includes i) lithium metal foil; and ii) a buffer layer including carbonaceous material particles, inorganic compound particles, polymer compound particles or their combination, and coated on one surface of the lithium metal foil; producing a negative electrode including a negative electrode current collector, and a negative electrode active material layer formed on at least one surface of the negative electrode current collector; and laminating the lithium metal laminate with the negative electrode in such a manner that the buffer layer of the lithium metal laminate is in contact with the negative electrode active material layer. A lithium metal laminate used for the method is also provided. The pre-lithiation of a negative electrode that includes a buffer layer reduces the problem of rapid volumetric swelling occurring.Type: GrantFiled: December 20, 2018Date of Patent: April 30, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Oh-Byong Chae, Jun-Hyuk Song, Yoon-Ah Kang, Je-Young Kim, Sang-Wook Woo
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Patent number: 11929487Abstract: A method of preparing a negative electrode for a lithium secondary battery, which includes forming a negative electrode mixture layer including a negative electrode active material on a negative electrode current collector, disposing lithium metal powder on at least a part of the negative electrode mixture layer, pressing the negative electrode mixture layer on which the lithium metal powder is disposed, wetting the pressed negative electrode mixture layer with a first electrolyte solution, and drying the wet negative electrode mixture layer. A battery including the negative electrode of the present invention has enhanced rapid charge/discharge characteristics and enhanced lifespan characteristics.Type: GrantFiled: January 25, 2019Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Oh Byong Chae, Sang Wook Woo, Je Young Kim, Yoon Ah Kang, Jun Hyuk Song
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Patent number: 8986010Abstract: The present disclosure relates to an airburst simulation system and method. The airburst simulation system includes a laser emitting unit to emit laser beam to an airburst aiming position, preset above a target hidden behind an obstacle, such that a warhead is airbursted to shoot the target, a laser detecting unit mounted onto the target to detect an arrival of the laser beam above the target, and a determining unit to measure a distance between the airburst aiming position and an arrival position of the laser detected by the laser detecting unit, and determine whether or not the target has been shot based on the distance. This allows for a simulated engagement using an airburst apparatus, with no harm to human bodies by virtue of the use of laser.Type: GrantFiled: December 5, 2012Date of Patent: March 24, 2015Assignee: Agency for Defense DevelopmentInventors: Joon-Ho Lee, Je-Wook Chae, Eui-Jung Choe, Sung-Bae Lee, Hyun-Jun Kim
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Patent number: 8887615Abstract: Disclosed is a firearm having dual barrels comprising a firearm body which is equipped with a small caliber barrel and a large caliber barrel; a selector installed on one side of the firearm body to select the type of bullet and the mode of firing; a fire control system installed on the firearm body to enable aiming the target through detecting the target both at day and night time; a firearm switch unit installed on the firearm body to transmit the information on the firing of the bullet; a fuse setter installed on the firearm body to transmit the control signal of the fire control system to the fuse of the explosive bullet which is introduced into the large caliber barrel; and a sensor device unit installed on the firearm body to transmit the position of the selector and sensed firing signal to the fire control system.Type: GrantFiled: September 9, 2011Date of Patent: November 18, 2014Assignee: Agency for Defense DevelopmentInventors: In Woo Kim, Suk Kyun Hong, Sung Bae Lee, Eui Jung Choe, Je Wook Chae
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Publication number: 20140065578Abstract: The present disclosure relates to an airburst simulation system and method. The airburst simulation system includes a laser emitting unit to emit laser beam to an airburst aiming position, preset above a target hidden behind an obstacle, such that a warhead is airbursted to shoot the target, a laser detecting unit mounted onto the target to detect an arrival of the laser beam above the target, and a determining unit to measure a distance between the airburst aiming position and an arrival position of the laser detected by the laser detecting unit, and determine whether or not the target has been shot based on the distance. This allows for a simulated engagement using an airburst apparatus, with no harm to human bodies by virtue of the use of laser.Type: ApplicationFiled: December 5, 2012Publication date: March 6, 2014Inventors: Joon-Ho LEE, Je-Wook CHAE, Eui-Jung CHOE, Sung-Bae LEE, Hyun-Jun KIM
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Patent number: 8276301Abstract: Disclosed is a percussion lock installed on a firearm, and more particularly, to a percussion lock wherein the hammer is operated through a link member so that operation of the firearm is possible in a small area, making it possible to design a firearm flexibly and reducing the volume and weight of the firearm. According to the present invention, the percussion lock installed on a firearm to fire a bullet by hitting a firing pin comprises a housing mounted in fixed state to a firearm, a hammer installed on the upper part of the housing for hitting a firing pin, a link member linking the hammer and the housing so that the hammer moves on a curve maintaining horizontal state, and an elastic member supporting the link member with elastic force.Type: GrantFiled: July 13, 2009Date of Patent: October 2, 2012Assignee: Agency for Defense DevelopmentInventors: Joon-Ho Lee, Eui-Jung Choe, Je-Wook Chae, Hyun-Jun Kim
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Publication number: 20120233901Abstract: Disclosed is a firearm having dual barrels comprising a firearm body which is equipped with a small caliber barrel and a large caliber barrel; a selector installed on one side of the firearm body to select the type of bullet and the mode of firing; a fire control system installed on the firearm body to enable aiming the target through detecting the target both at day and night time; a firearm switch unit installed on the firearm body to transmit the information on the firing of the bullet; a fuse setter installed on the firearm body to transmit the control signal of the fire control system to the fuse of the explosive bullet which is introduced into the large caliber barrel; and a sensor device unit installed on the firearm body to transmit the position of the selector and sensed firing signal to the fire control system.Type: ApplicationFiled: September 9, 2011Publication date: September 20, 2012Inventors: In Woo KIM, Suk Kyun HONG, Sung Bae LEE, Eui Jung CHOE, Je Wook CHAE
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Publication number: 20110107641Abstract: Disclosed is a percussion lock installed on a firearm, and more particularly, to a percussion lock wherein the hammer is operated through a link member so that operation of the firearm is possible in a small area, making it possible to design a firearm flexibly and reducing the volume and weight of the firearm. According to the present invention, the percussion lock installed on a firearm to fire a bullet by hitting a firing pin comprises a housing mounted in fixed state to a firearm, a hammer installed on the upper part of the housing for hitting a firing pin, a link member linking the hammer and the housing so that the hammer moves on a curve maintaining horizontal state, and an elastic member supporting the link member with elastic force.Type: ApplicationFiled: July 13, 2009Publication date: May 12, 2011Applicant: AGENCY FOR DEFENSE DEVELOPMENTInventors: Joon-Ho Lee, Eui-Jung Choe, Je-Wook Chae, Hyun-Jun Kim