Patents by Inventor Jun Muk Lim
Jun Muk Lim 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: 11920783Abstract: A flame port unit structure of a combustion apparatus provided with a plurality of flame ports for forming a flame comprises: a lean flame port unit, as a flame port for jetting lean gas, including a plurality of lean flame ports arranged along a width direction which is perpendicular to the jetting direction of the lean gas; and a rich flame port unit, as a flame port for jetting rich gas, including a pair of rich flame ports provided on both sides of the lean flame port unit with respect to a width direction, wherein the lean flame port unit comprises a first region in which a gap along the width direction of the lean flame port is formed along a longitudinal direction which is perpendicular to the jetting direction and the width direction, and a second region, provided on both sides along the longitudinal direction of the first region.Type: GrantFiled: June 7, 2019Date of Patent: March 5, 2024Assignee: KYUNGDONG NAVIEN CO., LTDInventors: Jun Kyu Park, Sang Hyun Nam, Hyun Muk Lim, Whee Jun Lim
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Patent number: 11837376Abstract: A method for producing a composite conductive material having excellent dispersibility is provided. The method includes supporting a catalyst on surfaces of carbon particles; heat treating the catalyst in a helium or hydrogen atmosphere such that the catalyst penetrate the surfaces of the carbon particles and are impregnated beneath the surfaces of the carbon particles at a contact point between the carbon particles and the impregnated catalyst; and heating the carbon particles having the impregnated catalyst disposed therein in the presence of a source gas to grow carbon nanofibers from the impregnated catalyst to form a composite conductive material, wherein the source gas contains a carbon source, and wherein the carbon nanofibers extend from the contact point to above the surfaces of the carbon particles.Type: GrantFiled: December 9, 2020Date of Patent: December 5, 2023Inventors: Tea Gon Kim, Je Young Kim, Hak Yoon Kim, Ki Won Sung, Ye Lin Kim, Joo Yul Baek, Jung Keun Yoo, Jun Muk Lim, Seul Ki Kim
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Patent number: 11817585Abstract: A positive electrode includes: a current collector; and a positive electrode active material layer disposed on the current collector, wherein the positive electrode active material layer includes a positive electrode active material, a conductive material, and a binder, the conductive material contains at least one of carbon black or a carbon nanotube and the binder contains polyvinylidene fluoride to which a functional group is bonded, and the functional group has a carboxyl group, and in the polyvinylidene fluoride to which the functional group is bonded.Type: GrantFiled: February 22, 2019Date of Patent: November 14, 2023Inventors: Jun Muk Lim, Joo Yul Baek, Sang Hoon Choy
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Patent number: 11631857Abstract: A secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein the positive electrode includes a current collector and a positive electrode active material layer disposed on the current collector, the positive electrode active material layer includes a positive electrode active material and carbon nanotubes, and the electrolyte solution includes a non-aqueous solvent, a lithium salt, and tetravinylsilane.Type: GrantFiled: February 22, 2019Date of Patent: April 18, 2023Inventors: Joo Yul Baek, Young Min Lim, Jun Muk Lim, Sang Hoon Choy, Chul Haeng Lee
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Patent number: 11594728Abstract: A positive electrode includes a positive electrode active material layer including a positive electrode active material, a conductive material, and a binder, wherein the positive electrode active material contains any one among Li(Nix1Mny1Coz1)O2 (0.55<x1<0.69, 0.15<y1<0.29, 0.15<z1<0.29, x1+y1+z1=1) and Li(Nix2Mny2Coz2)O2 (0.75<x2<0.89, 0.05<y2<0.19, 0.05<z2<0.19, x2+y2+z2=1) and the conductive material contains a carbon nanotube, and when the positive electrode active material is Li(Nix2Mny2Coz2)O2, the positive electrode active material layer satisfies Relation 1 and when the positive electrode active material is Li(Nix2Mny2Coz2)O2, the positive electrode active material layer satisfies Relation 2: 0.0020×a<b<0.0050×a??[Relation 1] 0.0015×a<b<0.Type: GrantFiled: January 21, 2019Date of Patent: February 28, 2023Inventors: Joo Yul Baek, Jun Muk Lim, Hyun Sik Chae, Sang Hoon Choy
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Publication number: 20220200075Abstract: Provided are a reuse method of electrode scrap and a method of fabricating a recycled electrode using the same. The reuse method of electrode scrap of the present disclosure includes (a) dry milling electrode scrap remaining after punching an electrode sheet including an active material layer on a current collector to obtain milled products; and (b) screening active material layer flakes from current collector fragments in the milled products by sieving the milled products, and collecting the screened active material layer flakes to obtain reusable particles.Type: ApplicationFiled: July 14, 2020Publication date: June 23, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Jun-Muk LIM, Joo-Yul BAEK, Hee-Seok SONG, Seong-Keun JANG, Woo-Ha KIM, Sang-Hoon CHOY
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Publication number: 20210151753Abstract: A positive electrode includes a positive electrode active material layer including a positive electrode active material, a conductive material, and a binder, wherein the positive electrode active material contains any one among Li(Nix1MnylCoz1)O2 (0.55<x1<0.69, 0.15<y1<0.29, 0.15<z1<0.29, x1+y1+z1=1) and Li(Nix2Mny2Coz2)O2 (0.75<x2<0.89, 0.05<y2<0.19, 0.05<z2<0.19, x2+y2+z2=1) and the conductive material contains a carbon nanotube, and when the positive electrode active material is Li(Nix2Mny2Coz2)O2, the positive electrode active material layer satisfies Relation 1 and when the positive electrode active material is Li(Nix2Mny2Coz2)O2, the positive electrode active material layer satisfies Relation 2: 0.0020×a<b<0.0050×a??[Relation 1] 0.0015×a<b<0.Type: ApplicationFiled: January 21, 2019Publication date: May 20, 2021Applicant: LG Chem, Ltd.Inventors: Joo Yul Baek, Jun Muk Lim, Hyun Sik Chae, Sang Hoon Choy
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Publication number: 20210104338Abstract: A method for producing a composite conductive material having excellent dispersibility is provided. The method includes supporting a catalyst on surfaces of carbon particles; heat treating the catalyst in a helium or hydrogen atmosphere such that the catalyst penetrate the surfaces of the carbon particles and are impregnated beneath the surfaces of the carbon particles at a contact point between the carbon particles and the impregnated catalyst; and heating the carbon particles having the impregnated catalyst disposed therein in the presence of a source gas to grow carbon nanofibers from the impregnated catalyst to form a composite conductive material, wherein the source gas contains a carbon source, and wherein the carbon nanofibers extend from the contact point to above the surfaces of the carbon particles.Type: ApplicationFiled: December 9, 2020Publication date: April 8, 2021Applicant: LG Chem, Ltd.Inventors: Tea Gon Kim, Je Young Kim, Hak Yoon Kim, Ki Won Sung, Ye Lin Kim, Joo Yul Baek, Jung Keun Yoo, Jun Muk Lim, Seul Ki Kim
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Publication number: 20210083336Abstract: The present invention relates to a method of reusing a positive electrode material, and more particularly, the method includes: inputting a positive electrode for a lithium secondary battery comprising a current collector, and a positive electrode active material layer formed on the current collector and including a first positive electrode active material, a first binder and a first conducting agent, into a solvent; separating at least a portion of the positive electrode active material layer from the current collector; adding second binder powder to the solvent and performing primary mixing a resulting mixture; and preparing a positive electrode material slurry by adding a second positive electrode active material and a second conducting agent to the solvent and performing secondary mixing a resulting mixture.Type: ApplicationFiled: May 8, 2019Publication date: March 18, 2021Applicant: LG CHEM, LTD.Inventors: Joo Yul BAEK, Woo Ha KIM, In Seong KIM, Jun Muk LIM, Sang Hoon CHOY
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Publication number: 20210057749Abstract: A positive electrode includes: a current collector; and a positive electrode active material layer disposed on the current collector, wherein the positive electrode active material layer includes a positive electrode active material, a conductive material, and a binder, the conductive material contains at least one of carbon black or a carbon nanotube and the binder contains polyvinylidene fluoride to which a functional group is bonded, and the functional group has a carboxyl group, and in the polyvinylidene fluoride to which the functional group is bonded.Type: ApplicationFiled: February 22, 2019Publication date: February 25, 2021Applicant: LG Chem, Ltd.Inventors: Jun Muk Lim, Joo Yul Baek, Sang Hoon Choy
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Patent number: 10902968Abstract: The present invention provides a composite conductive material having excellent dispersibility and a method for producing the same. In an embodiment, the method includes supporting a catalyst on surfaces of carbon particles; heat treating the catalyst in a helium or hydrogen atmosphere such that the catalyst penetrate the surfaces of the carbon particles and are impregnated beneath the surfaces of the carbon particles at a contact point between the carbon particles and the impregnated catalyst; and heating the carbon particles having the impregnated catalyst disposed therein in the presence of a source gas to grow carbon nanofibers from the impregnated catalyst to form a composite conductive material, wherein the source gas contains a carbon source, and wherein the carbon nanofibers extend from the contact point to above the surfaces of the carbon particles.Type: GrantFiled: June 8, 2018Date of Patent: January 26, 2021Inventors: Tea Gon Kim, Je Young Kim, Hak Yoon Kim, Ki Won Sung, Ye Lin Kim, Joo Yul Baek, Jung Keun Yoo, Jun Muk Lim, Seul Ki Kim
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Publication number: 20200373559Abstract: A positive electrode includes a current collector and a positive electrode active material layer disposed on the current collector, wherein the positive electrode active material layer includes a positive electrode active material, carbon nanotube, and a binder, the binder includes polyvinylidene fluoride which has a weight average molecular weight of 720,000 g/mol to 980,000 g/mol, a BET specific surface area of the carbon nanotube is 140 m2/g to 195 m2/g, and the positive electrode satisfies the following Formula 1: 1.3?B/A?3.4??[Formula 1] in Formula 1, B is an amount (wt %) of the polyvinylidene fluoride in the positive electrode active material layer, and A is an amount (wt %) of the carbon nanotube in the positive electrode active material layer.Type: ApplicationFiled: February 19, 2019Publication date: November 26, 2020Applicant: LG Chem, Ltd.Inventors: Joo Yul Baek, Jun Muk Lim, Chang Ju Lee, Il Geun Oh, Je Young Kim, Sang Hoon Choy
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Publication number: 20200358103Abstract: A secondary battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein the positive electrode includes a current collector and a positive electrode active material layer disposed on the current collector, the positive electrode active material layer includes a positive electrode active material and carbon nanotubes, and the electrolyte solution includes a non-aqueous solvent, a lithium salt, and tetravinylsilane.Type: ApplicationFiled: February 22, 2019Publication date: November 12, 2020Applicant: LG Chem, Ltd.Inventors: Joo Yul Baek, Young Min Lim, Jun Muk Lim, Sang Hoon Choy, Chul Haeng Lee
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Publication number: 20200203778Abstract: A positive electrode slurry composition for a secondary battery which includes a positive electrode active material, a carbon-based conductive agent having a specific surface area (Brunauer-Emmett-Teller (BET)) of 100 m2/g to 200 m2/g, a binder, and a nitrile-based copolymer which has an electrolyte solution swelling degree defined by Equation (1) of 200% or less and does not contain a functional group other than a cyano group is provided: electrolyte solution swelling degree (%)={(W1?W0)/W0}×100??Equation (1) wherein, W0 is an initial weight of a polymer film prepared from the nitrile-based copolymer, and W1 is a weight of the polymer film which is measured after storing the polymer film at 60° for 48 hours in an electrolyte solution.Type: ApplicationFiled: March 4, 2020Publication date: June 25, 2020Applicant: LG Chem, Ltd.Inventors: Jung Woo Yoo, Hye Lim Shim, Jun Muk Lim
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Publication number: 20200126684Abstract: The present invention provides a composite conductive material having excellent dispersibility and a method for producing the same. In an embodiment, the method includes supporting a catalyst on surfaces of carbon particles; heat treating the catalyst in a helium or hydrogen atmosphere such that the catalyst penetrate the surfaces of the carbon particles and are impregnated beneath the surfaces of the carbon particles at a contact point between the carbon particles and the impregnated catalyst; and heating the carbon particles having the impregnated catalyst disposed therein in the presence of a source gas to grow carbon nanofibers from the impregnated catalyst to form a composite conductive material, wherein the source gas contains a carbon source, and wherein the carbon nanofibers extend from the contact point to above the surfaces of the carbon particles.Type: ApplicationFiled: June 8, 2018Publication date: April 23, 2020Applicant: LG Chem, Ltd.Inventors: Tea Gon Kim, Je Young Kim, Hak Yoon Kim, Ki Won Sung, Ye Lin Kim, Joo Yul Baek, Jung Keun Yoo, Jun Muk Lim, Seul Ki Kim