Patents by Inventor Da-In CHOI
Da-In CHOI 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: 20240107999Abstract: Provided is an antibacterial composition comprising at least one compound including a quaternary ammonium structure having an acrylate group or a methacrylate group, and having an antibacterial strength A of 90% or more against at least one strain selected from Gram-positive bacteria and Gram-negative bacteria, and an acute oral toxicity dose LD50 of 300 mg/Kg or more, where the antibacterial strength A equals (1?Asample/AReference)×100, where Asample equals an absorbance of an inoculated medium solution incubated with the antibacterial composition, and AReference equals an absorbance of an inoculated medium solution incubated without addition of the antibacterial composition.Type: ApplicationFiled: June 29, 2022Publication date: April 4, 2024Inventors: Ji Seok LEE, Soonhee KANG, Sanggon KIM, Leehyeon BAEK, Haesung YUN, Hwanhee LEE, Da Sol CHUNG, Seonjung JUNG, Hyungsam CHOI
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Patent number: 11811061Abstract: A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1?a?b?cMaM?bM?c]1?xO2?z. M is one or more elements of the group Mn, Zr and Ti. M? is one or more elements of the group Al, B and Co. M? is a dopant different from M and M?, and x, a, b and c are expressed in mol with ?0.02?x?0.02, 0?c?0.05, 0.10?(a+b)?0.65 and 0?z?0.05. The material has an unconstrained cumulative volume particle size distribution value (?0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (?P(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (?P(D10P=300)). When ?P(D10P=200) is compared to ?0(D10P=0), the relative increase in value is less than 100%. When ?P(D10P=300) is compared to ?0(D10P=0), the relative increase in value is less than 120%.Type: GrantFiled: April 12, 2022Date of Patent: November 7, 2023Assignees: UMICORE, UMICORE KOREA, LTD.Inventors: Maxime Blangero, Da-In Choi, WooRam Cho, JiHye Kim
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Publication number: 20220255075Abstract: A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1?a?b?cMaM?bM?c]1?xO2?z. M is one or more elements of the group Mn, Zr and Ti. M? is one or more elements of the group Al, B and Co. M? is a dopant different from M and M?, and x, a, b and c are expressed in mol with ?0.02?x?0.02, 0?c?0.05, 0.10?(a+b)?0.65 and 0?z?0.05. The material has an unconstrained cumulative volume particle size distribution value (?0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (?P(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (?P(D10P=300)). When ?P(D10P=200) is compared to ?0(D10P=0), the relative increase in value is less than 100%. When ?P(D10P=300) is compared to ?0(D10P=0), the relative increase in value is less than 120%.Type: ApplicationFiled: April 12, 2022Publication date: August 11, 2022Inventors: Maxime BLANGERO, Da-In CHOI, WooRam CHO, JiHye KIM
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Patent number: 11335907Abstract: A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1?a?b?cMaM?bM?c]1?xO2?z. M is one or more elements of the group Mn, Zr and Ti. M? is one or more elements of the group Al, B and Co. M? is a dopant different from M and M?, and x, a, b and c are expressed in mol with ?0.02?x?0.02, 0?c?0.05, 0.10?(a+b)?0.65 and 0?z?0.05. The material has an unconstrained cumulative volume particle size distribution value (?0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (?P(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (?P(D10P=300)). When ?P(D10P=200) is compared to ?0(D10P=0), the relative increase in value is less than 100%. When ?P(D10P=300) is compared to ?0(D10P=0), the relative increase in value is less than 120%.Type: GrantFiled: September 14, 2020Date of Patent: May 17, 2022Assignees: UMICORE, UMICORE KOREA, LTD.Inventors: Maxime Blangero, Da-In Choi, WooRam Cho, JiHye Kim
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Publication number: 20210005891Abstract: A powderous positive electrode material for a lithium secondary battery has the general formula Li1+x[Ni1?a?b?cMaM?bM?c]1?xO2?z. M is one or more elements of the group Mn, Zr and Ti. M? is one or more elements of the group Al, B and Co. M? is a dopant different from M and M?, and x, a, b and c are expressed in mol with ?0.02?x?0.02, 0?c?0.05, 0.10?(a+b)?0.65 and 0?z?0.05. The material has an unconstrained cumulative volume particle size distribution value (?0(D10P=0)), a cumulative volume particle size distribution value after having been pressed at a pressure of 200 MPa (?P(D10P=200)) and a cumulative volume particle size distribution value after having been pressed at a pressure of 300 MPa (?P(D10P=300)). When ?P(D10P=200) is compared to ?0(D10P=0), the relative increase in value is less than 100%. When ?P(D10P=300) is compared to ?0(D10P=0), the relative increase in value is less than 120%.Type: ApplicationFiled: September 14, 2020Publication date: January 7, 2021Inventors: Maxime BLANGERO, Da-In CHOI, WooRam CHO, JiHye KIM
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Patent number: 10833328Abstract: A powderous positive electrode material for a lithium secondary battery, the material having the general formula Li1+x[Ni1?a?b?cMaM?bM?c]1?xO2?z; M being either one or more elements of the group Mn, Zr and Ti, M? being either one or more elements of the group Al, B and Co, M? being a dopant different from M and M?, x, a, b and c being expressed in mol with ?0.02?x?0.02, 0?c?0.05, 0.10?(a+b)?0.65 and 0?z?0.05; and wherein the powderous material is characterized by having a BET value ?0.37 m2/g, a Dmax<50 ?m, and a hardness strength index ??(P) of no more than 100%+(1?2a?b)×160% for P=200 MPa, wherein (Formula I) (I) with D 10p=0 being the D10 value of the unconstrained powder (P=0 M Pa), r°(D 10p=0) being the cumulative volume particle size distribution of the unconstrained powder at D 10p=0, and ?p(D 10p=0) being the cumulative volume particle size distribution at D10p=0 of the pressed samples with P being expressed in M Pa.Type: GrantFiled: June 1, 2015Date of Patent: November 10, 2020Assignees: Umicore, Umicore Korea Ltd.Inventors: Maxime Blangero, Da-In Choi, WooRam Cho, JiHye Kim
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Patent number: 10333140Abstract: A layered lithium metal oxide powder for a cathode material used in a rechargeable battery, with the general formula (1?x)[Lia-bAb]3a[CO1-cMc]3b[O2-d-eN?e]6c.xLi3PO4, with 0.0001?x?0.05, 0.90?a?1.10, 0<b+c?0.1, ?0.1?d?0.1 and e?0.05, wherein A and M are one or more elements including at least one of the group consisting of Mg, Ti and Al; wherein N? is either one or more dopants of the group consisting of F, S, N and P; the powder consisting of a core and an ion-conductive electron-insulating surface layer, the core having a layered crystal structure and the surface layer comprising a mixture of elements of the core material, oxides comprising either one or more elements of the group consisting of Mg, Ti and Al; and Li3PO4.Type: GrantFiled: June 30, 2016Date of Patent: June 25, 2019Assignees: UMICORE, UMICORE KOREA LTD.Inventors: Maxime Blangero, Da-In Choi, Shinichi Kumakura
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Patent number: 10044035Abstract: A lithium metal oxide powder for a cathode material in a rechargeable battery, comprising a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the metal M has the formula M=Co1?aM?a, with 0?a?0.05, wherein M? is selected from one or more metals of the group consisting of Al, Ga and B; and the surface layer comprising a mixture of the elements of the core material Li, M and oxygen, inorganic N-based oxides and a cubic phase oxide having a crystal structure with a Fd-3mS space group, wherein N is selected from one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Y, Sn, Sb, Na, Zn, Zr and Si.Type: GrantFiled: March 9, 2016Date of Patent: August 7, 2018Assignee: UmicoreInventors: Jens Paulsen, Maxime Blangero, Da-In Choi
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Publication number: 20180190976Abstract: A layered lithium metal oxide powder for a cathode material used in a rechargeable battery, with the general formula (1?x)[Lia-bAb]3a[CO1-cMc]3b[O2-d-eN?e]6c.xLi3PO4, with 0.0001?x?0.05, 0.90?a?1.10, 0<b+c?0.1, ?0.1?d?0.1 and e?0.05, wherein A and M are one or more elements including at least one of the group consisting of Mg, Ti and Al; wherein N? is either one or more dopants of the group consisting of F, S, N and P; the powder consisting of a core and an ion-conductive electron-insulating surface layer, the core having a layered crystal structure and the surface layer comprising a mixture of elements of the core material, oxides comprising either one or more elements of the group consisting of Mg, Ti and Al; and Li3PO4.Type: ApplicationFiled: June 30, 2016Publication date: July 5, 2018Inventors: Maxime BLANGERO, Da-In CHOI, Shinichi KUMAKURA
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Patent number: 9979021Abstract: A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li content is stoichiometrically controlled, wherein the metal M has the formula M=Co1-aM?a, with 0?a?0.05, wherein M? is either one or more metals of the group consisting of Al, Ga and B; and the surface layer consisting of a mixture of the elements of the core material and inorganic N-based oxides, wherein N is either one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Y, Sn, Sb, Na, Zn, Zr and Si.Type: GrantFiled: September 16, 2015Date of Patent: May 22, 2018Assignee: UmicoreInventors: Jens Paulsen, Maxime Blangero, Da-In Choi
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Patent number: 9859550Abstract: A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li to M molar ratio is between 0.98 and 1.01, and preferably between 0.99 and 1.00, wherein the metal M has the formula M=Co1-aM?a, with 0?a?0.05, wherein M? is either one or more metals of the group consisting of Al, Ga and B; and the surface layer consisting of a mixture of the elements of the core material and inorganic N- and N?-based oxides, wherein N is either one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Sn, Sb, Na, Zn, and Si; and wherein N? is either one or more metals of the group consisting of Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Sc, Ce, Pr, Nd, Gd, Dy, and Er.Type: GrantFiled: November 12, 2013Date of Patent: January 2, 2018Assignees: Umicore, Umicore Korea Ltd.Inventors: Maxime Blangero, KyuBo Kim, Da-In Choi
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Publication number: 20170125808Abstract: A powderous positive electrode material for a lithium secondary battery, the material having the general formula Li1+x[Ni1?a?b?cMaM?bM?c] 1?xO2?z; M being either one or more elements of the group Mn, Zr and Ti, M? being either one or more elements of the group Al, B and Co, M? being a dopant different from M and M?, x, a, b and c being expressed in mol with ?0.02?x?0.02, 0?c?0.05, 0.10?(a+b)?0.65 and 0?z?0.05; and wherein the powderous material is characterized by having a BET value ?0.37 m2/g, a Dmax<50 ?m, and a hardness strength index ??(P) of no more than 100%+(1?2a?b)×160% for P=200 MPa, wherein (Formula I) (I) with D 10p=0 being the D10 value of the unconstrained powder (P=0 M Pa), r°(D 10p=0) being the cumulative volume particle size distribution of the unconstrained powder at D 10p=0, and ?p(D 10p=0) being the cumulative volume particle size distribution at D10p=0 of the pressed samples with P being expressed in M Pa.Type: ApplicationFiled: June 1, 2015Publication date: May 4, 2017Inventors: Maxime BLANGERO, Da-In CHOI, WooRam CHO, JiHye KIM
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Publication number: 20160268601Abstract: A lithium metal oxide powder for a cathode material in a rechargeable battery, comprising a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the metal M has the formula M=Co1-aM?a, with 0?a?0.05, wherein M? is selected from one or more metals of the group consisting of Al, Ga and B; and the surface layer comprising a mixture of the elements of the core material Li, M and oxygen, inorganic N-based oxides and a cubic phase oxide having a crystal structure with a Fd-3mS space group, wherein N is selected from one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Y, Sn, Sb, Na, Zn, Zr and Si.Type: ApplicationFiled: March 9, 2016Publication date: September 15, 2016Inventors: Jens PAULSEN, Maxime BLANGERO, Da-In CHOI
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Publication number: 20160006032Abstract: A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li content is stoichiometrically controlled, wherein the metal M has the formula M?Co1-aM?a, with O?a?0.05, wherein M? is either one or more metals of the group consisting of Al, Ga and B; and the surface layer consisting of a mixture of the elements of the core material and inorganic N-based oxides, wherein N is either one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Y, Sn, Sb, Na, Zn, Zr and Si.Type: ApplicationFiled: September 16, 2015Publication date: January 7, 2016Inventors: Jens Paulsen, Maxime Blangero, Da-In Choi
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Publication number: 20150380722Abstract: A lithium metal oxide powder for use as a cathode material in a rechargeable battery, consisting of a core material and a surface layer, the core having a layered crystal structure consisting of the elements Li, a metal M and oxygen, wherein the Li to M molar ratio is between 0.98 and 1.01, and preferably between 0.99 and 1.00, wherein the metal M has the formula M=Co1-aM?a, with 0?a?0.05, wherein M? is either one or more metals of the group consisting of Al, Ga and B; and the surface layer consisting of a mixture of the elements of the core material and inorganic N- and N?-based oxides, wherein N is either one or more metals of the group consisting of Mg, Ti, Fe, Cu, Ca, Ba, Sn, Sb, Na, Zn, and Si; and wherein N? is either one or more metals of the group consisting of Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Sc, Ce, Pr, Nd, Gd, Dy, and Er.Type: ApplicationFiled: November 12, 2013Publication date: December 31, 2015Inventors: Maxime BLANGERO, KyuBo KIM, Da-In CHOI