Patents by Inventor Min Wook Lee
Min Wook Lee 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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Publication number: 20250210658Abstract: Provided is a lithium secondary battery including a negative electrode including a negative electrode composite layer including a negative electrode active material including a first negative electrode active material and a second negative electrode active material, a negative electrode conductive material, and a negative electrode binder; a positive electrode including a positive electrode composite layer including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder; and an electrolyte, and CFC defined by Equation 1 is 0.38 to 1.962: CFC=100×Wc?{(D50,a1×D50,a2×L×RN/P×1010)/MWc}??Equation 1: wherein in Equation 1, all the variables are described herein.Type: ApplicationFiled: December 12, 2024Publication date: June 26, 2025Applicant: LG Energy Solution, Ltd.Inventors: Jin Young Park, Seok Jin Oh, Hee Chang Youn, Joo Hwan Sung, Min Wook Lee, Jong Seon Kim, Ji Min Park
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Patent number: 12244012Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VP represented by Equation (1) below is 4 mbar·Ah?1·sec?1 or less: Equation (1): VP=?P/(tmax×C).Type: GrantFiled: June 7, 2024Date of Patent: March 4, 2025Assignee: LG Energy Solution, Ltd.Inventors: Min Wook Lee, Joo Hwan Sung, Hee Chang Youn, Ju Young Yun, Seok Jin Oh, Ji Min Park
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Publication number: 20250055019Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VT represented by Equation (1) below measured after manufacturing a test module by stacking four of the lithium secondary battery fully charged by being charged to 4.35 V is 4 Ah/sec or less: Equation (1): VT=Ctotal/t.Type: ApplicationFiled: October 31, 2024Publication date: February 13, 2025Applicant: LG Energy Solution, Ltd.Inventors: Min Wook Lee, Ju Young YUN, Seok Jin OH, Joo Hwan SUNG, Hee Chang Youn, Ji Min PARK, Hye In KO, Ran Eun LEE, Jin Young PARK
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Publication number: 20250054975Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VP represented by Equation (1) below is 4 mbar·Ah?1·sec?1 or less: Equation (1): VP=?P/(tmax×C).Type: ApplicationFiled: October 31, 2024Publication date: February 13, 2025Applicant: LG Energy Solution, Ltd.Inventors: Min Wook Lee, Joo Hwan Sung, Hee Chang Youn, Ju Young Yun, Seok Jin Oh, Ji Min Park
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Patent number: 12224394Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VT represented by Equation (1) below measured after manufacturing a test module by stacking four of the lithium secondary battery fully charged by being charged to 4.35 V is 4 Ah/sec or less: Equation (1): VT=Ctotal/t.Type: GrantFiled: June 7, 2024Date of Patent: February 11, 2025Assignee: LG Energy Solution, Ltd.Inventors: Min Wook Lee, Ju Young Yun, Seok Jin Oh, Joo Hwan Sung, Hee Chang Youn, Ji Min Park, Hye In Ko, Ran Eun Lee, Jin Young Park
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Publication number: 20240429382Abstract: The present disclosure relates to a positive electrode including a positive electrode active material, a positive electrode conductive material, and a positive electrode binder, wherein the positive electrode active material includes a lithium nickel-based oxide containing 70 mol % or less of nickel among all metals excluding lithium, wherein the lithium nickel-based oxide includes single particle-type particles, and the conductive material includes a linear conductive material and a dotted conductive material, and FCR defined by Equation (1) below satisfies 12 to 20: FCR=dc1×dc2×D50.a??[Equation (1)] wherein, dc1 is the true density (unit: g/cm3) of the linear conductive material above, dc2 is the true density (unit: g/cm3) of the dotted conductive material above, and D50.Type: ApplicationFiled: June 21, 2024Publication date: December 26, 2024Applicant: LG Energy Solution, Ltd.Inventors: Seok Jin Oh, Hee Chang Youn, Joo Hwan Sung, Jin Young Park, Min Wook Lee, Jong Seon Kim
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Publication number: 20240417281Abstract: A method for treating wastewater of a neopentyl glycol production process, the method including: recovering wastewater including a catalyst from one or more processes of an aldol purification process, a_neopentyl glycol purification process, and an extractant recovery process, and supplying the wastewater to a volatile organic compounds to a separation column; obtaining, from the separation column for volatile organic compound separation column; obtaining an upper discharge stream including the catalyst and a lower discharge stream including wastewater from which the catalyst has been removed in the volatile organic compound separation column; and supplying the lower discharge stream to a wastewater treatment system to treat the wastewater.Type: ApplicationFiled: September 1, 2023Publication date: December 19, 2024Inventors: Sung Kyun KIM, Sung Kyu LEE, Min Wook LEE
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Publication number: 20240413380Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VT represented by Equation (1) below measured after manufacturing a test module by stacking four of the lithium secondary battery fully charged by being charged to 4.35 V is 4 Ah/sec or less: Equation (1): VT=Ctotal/t.Type: ApplicationFiled: June 7, 2024Publication date: December 12, 2024Applicant: LG Energy Solution, Ltd.Inventors: Min Wook Lee, Ju Young Yun, Seok Jin Oh, Joo Hwan Sung, Hee Chang Youn, Ji Min Park, Jin Young Park, Hye In Ko, Ran Eun Lee
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Publication number: 20240413325Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VP represented by Equation (1) below is 4 mbar·Ah?1·sec?1 or less: Equation (1): VP=?P/(tmax×C).Type: ApplicationFiled: June 7, 2024Publication date: December 12, 2024Applicant: LG Energy Solution, Ltd.Inventors: Min Wook LEE, Joo Hwan SUNG, Hee Chang YOUN, Ju Young YUN, Seok Jin OH, Ji Min PARK
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Publication number: 20240294710Abstract: The present disclosure relates to a polyimide-based resin film in which a refractive index difference (?n) obtained by Equation 1 is 0.0068 or less, and a yellow index at a thickness of 10 ?m is 5.5 or less, and a substrate for display device, and an optical device using the same.Type: ApplicationFiled: May 17, 2022Publication date: September 5, 2024Applicant: LG CHEM, LTD.Inventors: Mi Eun KANG, Ye Ji HONG, Chan Hyo PARK, Hangah PARK, Min Wook LEE
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Publication number: 20240092974Abstract: The present disclosure relates to a polyimide-based resin film comprising a polyimide-based resin containing a polyimide repeating unit represented by Chemical Formula 1 and a polyimide repeating unit represented by Chemical Formula 2, a substrate for display device, and an optical device using the same.Type: ApplicationFiled: September 14, 2022Publication date: March 21, 2024Applicant: LG CHEM, LTD.Inventors: Mi Eun KANG, Chan Hyo PARK, Jinyoung PARK, Chae Won PARK, Min Wook LEE
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Publication number: 20240076828Abstract: Disclosed herein a method of manufacturing a carbon fiber-reinforced composite including a thermal barrier coating layer, the method includes: preparing a thermal barrier coating layer; preparing a substrate including a carbon fiber fabric; and attaching the thermal barrier coating layer on an upper portion of the substrate and molding a composite with a resin transfer molding.Type: ApplicationFiled: September 6, 2023Publication date: March 7, 2024Applicants: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, UTAH STATE UNIVERSITYInventors: Min Wook LEE, Hee Jin KIM, Jungwon KIM, Juhyeong LEE
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Patent number: 11673369Abstract: The present disclosure relates to a carbon-fiber-reinforced composite including a plurality of stacked thermoplastic layers, and a plurality of carbon fiber reinforcing layers interposed between the thermoplastic layers, wherein the carbon-fiber-reinforced composite further comprises a stitching part stitched with an upper yarn and a lower yarn from outside of the thermoplastic layers at a folding location of the carbon-fiber-reinforced composite.Type: GrantFiled: March 25, 2021Date of Patent: June 13, 2023Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Min Wook Lee, Yongtak Kim, Ki Hyun Ryu, Wonjin Na, Jaesang Yu, Minkook Kim, Cheol-Min Yang
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Publication number: 20230133697Abstract: The present disclosure relates to a polyimide-based polymer film comprising a polyimide-based polymer containing a polyimide repeating unit synthesized by the reaction of an acid anhydride compound having a specific structure and a diamine compound, wherein a glass transition temperature is 400° C. or more, and a thickness direction retardation value at a thickness of 10 ?m is 150 nm or less, and a substrate for a display device and an optical device using the same.Type: ApplicationFiled: September 8, 2021Publication date: May 4, 2023Applicant: LG CHEM, LTD.Inventors: Min Wook LEE, Kyunghwan KIM, Chan Hyo PARK
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Publication number: 20230132166Abstract: The present disclosure relates to a polyimide-based polymer film comprising a polyimide-based polymer containing a polyimide repeating unit synthesized by the reaction of an acid anhydride compound having a specific structure and a diamine compound, wherein an average transmittance at a wavelength of 380 nm or more and 780 nm or less is 60% or more, and a thickness direction retardation value at a thickness of 10 pm is 150 nm or less, and a substrate for a display device, a circuit board, an optical device, and an electronic device using the same.Type: ApplicationFiled: September 6, 2021Publication date: April 27, 2023Applicant: LG CHEM, LTD.Inventors: Min Wook LEE, Chan Hyo PARK
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Publication number: 20210379867Abstract: The present disclosure relates to a carbon-fiber-reinforced composite including a plurality of stacked thermoplastic layers, and a plurality of carbon fiber reinforcing layers interposed between the thermoplastic layers, wherein the carbon-fiber-reinforced composite further comprises a stitching part stitched with an upper yarn and a lower yarn from outside of the thermoplastic layers at a folding location of the carbon-fiber-reinforced compositeType: ApplicationFiled: March 25, 2021Publication date: December 9, 2021Inventors: Min Wook LEE, Yongtak KIM, Ki Hyun RYU, Wonjin NA, Jaesang YU, Minkook KIM, Cheol-Min YANG
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Publication number: 20200307153Abstract: The present specification provides a carbon fiber reinforced composite structure comprising: a plurality of carbon fiber reinforced sheets, which are laminated; and a stitch member penetrating one or more carbon fiber reinforced sheets, in which the carbon fiber reinforced sheet includes a plurality of reinforcing carbon fibers arranged in one direction. The carbon fiber reinforced composite structure shows excellent thermal conductivity in a thickness direction.Type: ApplicationFiled: February 27, 2020Publication date: October 1, 2020Inventors: Jaesang YU, Hyunkee HONG, Kwak Jin BAE, Hana JUNG, Hoi-Kil CHOI, Yuna OH, Dong Won LEE, Cheol-Min YANG, Min Wook LEE, Minkook KIM, Wonjin NA, Nam Ho YOU
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Patent number: 9469920Abstract: The present invention relates to an electrospinning device. The electrospinning device may apply the force of a supersonic flow acting at a predetermined angle with respect to an electrostatic force on a fiber discharged from an electrospinning nozzle to cause shearing stress on the fiber, thereby providing fibers having a very small diameter and collecting fibers having a finer diameter. Also, the electrospinning device may collect finer and more uniform fibers by adjusting the relative positions of the electrospinning nozzle for discharging the fiber and a gas spray nozzle for spraying a gas.Type: GrantFiled: June 17, 2012Date of Patent: October 18, 2016Assignees: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, NORTH CAROLINA STATE UNIVERSITY, BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOISInventors: Min Wook Lee, Suk Goo Yoon, Alexander L Yarin, Suman Sinha-Ray, Behnam Pourdeyhimi
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Patent number: 9401449Abstract: The present invention relates to an apparatus for manufacturing an inorganic thin-film solar cell, the apparatus including: a substrate stage which is mounted in a chamber and in which a solar cell substrate is disposed; and an inorganic powder supply unit including a nozzle configured to discharge an inorganic powder aerosol containing an inorganic powder onto the substrate stage in a supersonic flow so as to form a solar cell layer on the solar cell substrate, and an inorganic powder supply portion configured to supply the inorganic powder aerosol to the nozzle.Type: GrantFiled: February 9, 2012Date of Patent: July 26, 2016Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATIONInventors: Jung Jae Park, Do Yeon Kim, Jong Gun Lee, Min Wook Lee, Suk Goo Yoon
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Patent number: 9228639Abstract: An automated manual transmission includes an input, an output disposed in parallel with the input, a common use planetary gear device disposed on the input or the output, a shift gear device in which a plurality of external gear mates having different shift ratios are disposed on the input and the output, and a friction member disposed to transmit the rotation power transmitted to the input at the time of the braking to the output through the external gear mates.Type: GrantFiled: December 4, 2013Date of Patent: January 5, 2016Assignee: Hyundai Motor CompanyInventors: Min Wook Lee, Jong Yun Park, Soon Ki Eo, Han Ki Hong