Patents by Inventor Min-Ji Gu
Min-Ji Gu 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: 11394084Abstract: A separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a first porous coating layer and a second porous coating layer formed on one surface and the other surface of the porous substrate, respectively, and including a plurality of inorganic particles, a binder polymer disposed on a part or the whole of the surface of the inorganic particles so that the inorganic particles are connected and fixed with each other, and an anionic surfactant, wherein the inorganic particles include boehmite particles and non-boehmite particles, and the boehmite particles and the binder polymer are present at a weight ratio of 1:1-1:5.Type: GrantFiled: November 17, 2017Date of Patent: July 19, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Kwan-Woo Nam, Min-Ji Gu
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Patent number: 11245158Abstract: Disclosed are a separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a pair of porous coating layers formed on at least one surface of the porous substrate, and including a plurality of inorganic particles and a binder disposed partially or totally on the surface of the inorganic particles to connect and fix the inorganic particles with each other, wherein the binder is used in an amount of 5-40 wt % based on the total weight of the porous coating layer, the inorganic particles include boehmite particles, the binder includes a fluorine-based binder and a rubber-based binder, and the fluorine-based binder and the rubber-based binder are used at a weight ratio of 80:20-99.9:0.1.Type: GrantFiled: June 8, 2017Date of Patent: February 8, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Dong-Wook Sung, Min-Ji Gu
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Patent number: 11177533Abstract: Disclosed are a separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a pair of porous coating layers formed on both surfaces of the porous substrate, and including a plurality of inorganic particles and a binder polymer disposed partially or totally on the surface of the inorganic particles to connect and fix the inorganic particles with each other, wherein the amount of the binder polymer and the amount of the inorganic particles in one porous coating layer are the same as those in the other porous coating layer, the binder polymer is used in an amount of 5-40 wt % based on the total weight of the porous coating layer, the inorganic particles include boehmite particles and non-boehmite particles, and the boehmite particles and the binder polymer are used at a weight ratio of 1:1-1:5.Type: GrantFiled: June 8, 2017Date of Patent: November 16, 2021Assignee: LG CHEM, LTD.Inventors: Min-Ji Gu, Dong-Wook Sung
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Patent number: 10811661Abstract: A separator including a polyolefin-based separator substrate having a porous structure, a first coating portion including a mixture of inorganic particles and a binder polymer, and a second coating portion including a material that reduces generation of hydrofluoric acid, wherein the first coating portion and the second coating portion are located on the separator substrate, are located in pores in the separator substrate, or are located on the separator substrate and in pores in the separator substrate.Type: GrantFiled: July 24, 2018Date of Patent: October 20, 2020Assignee: LG CHEM, LTD.Inventors: Min Ji Kim, Min Ji Gu, Kwan Woo Nam, Min Hyung Kim, Je An Lee
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Publication number: 20200020910Abstract: A separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a first porous coating layer and a second porous coating layer formed on one surface and the other surface of the porous substrate, respectively, and including a plurality of inorganic particles, a binder polymer disposed on a part or the whole of the surface of the inorganic particles so that the inorganic particles are connected and fixed with each other, and an anionic surfactant, wherein the inorganic particles include boehmite particles and non-boehmite particles, and the boehmite particles and the binder polymer are present at a weight ratio of 1:1-1:5.Type: ApplicationFiled: November 17, 2017Publication date: January 16, 2020Applicant: LG CHEM, LTD.Inventors: Kwan-Woo NAM, Min-Ji GU
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Publication number: 20190288261Abstract: A separator including a polyolefin-based separator substrate having a porous structure, a first coating portion including a mixture of inorganic particles and a binder polymer, and a second coating portion including a material that reduces generation of hydrofluoric acid, wherein the first coating portion and the second coating portion are located on the separator substrate, are located in pores in the separator substrate, or are located on the separator substrate and in pores in the separator substrate.Type: ApplicationFiled: July 24, 2018Publication date: September 19, 2019Applicant: LG CHEM, LTD.Inventors: Min Ji KIM, Min Ji GU, Kwan Woo NAM, Min Hyung KIM, Je An LEE
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Publication number: 20190260001Abstract: Disclosed are a separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a pair of porous coating layers formed on both surfaces of the porous substrate, and including a plurality of inorganic particles and a binder polymer disposed partially or totally on the surface of the inorganic particles to connect and fix the inorganic particles with each other, wherein the amount of the binder polymer and the amount of the inorganic particles in one porous coating layer are the same as those in the other porous coating layer, the binder polymer is used in an amount of 5-40 wt % based on the total weight of the porous coating layer, the inorganic particles include boehmite particles and non-boehmite particles, and the boehmite particles and the binder polymer are used at a weight ratio of 1:1-1:5.Type: ApplicationFiled: June 8, 2017Publication date: August 22, 2019Applicant: LG CHEM, LTD.Inventors: Min-Ji GU, Dong-Wook SUNG
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Publication number: 20180315969Abstract: Disclosed are a separator and an electrochemical device including the same. The separator includes: a porous substrate having a plurality of pores; and a pair of porous coating layers formed on at least one surface of the porous substrate, and including a plurality of inorganic particles and a binder disposed partially or totally on the surface of the inorganic particles to connect and fix the inorganic particles with each other, wherein the binder is used in an amount of 5-40 wt % based on the total weight of the porous coating layer, the inorganic particles include boehmite particles, the binder includes a fluorine-based binder and a rubber-based binder, and the fluorine-based binder and the rubber-based binder are used at a weight ratio of 80:20-99.9:0.1.Type: ApplicationFiled: June 8, 2017Publication date: November 1, 2018Applicant: LG CHEM, LTD.Inventors: Dong-Wook SUNG, Min-Ji GU
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Publication number: 20140066521Abstract: The present invention relates to an antibacterial and/or preserving composition which contains 3-butoxy-1,2-propanediol as a preserving agent. The antibacterial or preserving composition according to the present invention has an excellent resistance to microorganisms and has an excellent moisturizing effect, and hardly causes skin troubles.Type: ApplicationFiled: November 4, 2011Publication date: March 6, 2014Applicant: LG HOUSEHOLD & HEALTH CARE LTD.Inventors: Min-Ji Gu, Jung-Jin Choi, Gug-In Jeong, Sug-Youn Chang