Patents by Inventor Hideyuki Koga
Hideyuki Koga 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: 20220160779Abstract: The present inventors have clarified that activin has an activity of promoting the proliferation of MSCs and an activity of promoting the regeneration of meniscus or cartilaginous tissue without affecting differentiation multipotency. Further, the present inventors have also found that the use of activin makes it possible to treat and prevent meniscus damage or cartilage disorders, including suppression of degenerative degeneration of cartilage and pain.Type: ApplicationFiled: March 19, 2020Publication date: May 26, 2022Applicant: National University Corporation Tokyo Medical and Dental UniversityInventors: Kunikazu TSUJI, Miyoko OJIMA, Takeshi MUNETA, Hideyuki KOGA, Ichiro SEKIYA
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Patent number: 10811653Abstract: An object of the present disclosure is to provide a lithium ion battery with low resistance to ion conduction. The present disclosure achieves the object by providing a lithium ion battery comprising: a cathode active material; an anode active material; an insulating oxide with neither electron conductivity nor ion conductivity that is formed in an interface between the cathode active material and the anode active material, and contains at least one kind of an element included in the cathode active material and at least one kind of an element included in the anode active material; and an electrolyte material that is an ion conducting path between the cathode active material and the anode active material; wherein the cathode active material comprises Li, at least one kind of Co, Mn, Ni, and Fe, and O; and the anode active material comprises at least one kind of Si, Li and Ti.Type: GrantFiled: July 20, 2017Date of Patent: October 20, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hideyuki Koga
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Patent number: 10361427Abstract: An all-solid-state battery having an olivine-type positive electrode active material and a sulfur solid electrolyte and a method for producing the all-solid-state battery is provided. The positive electrode active material is a positive electrode active material in which primary particles aggregate into secondary particles. The primary particles have an olivine-type positive electrode active material and a coating layer that coats all or a portion of the olivine-type positive electrode active material. The coating layer contains a transition metal derived from the olivine-type positive electrode active material, lithium, phosphorous and oxygen as components thereof, and the concentration of the transition metal is lower the concentration of the olivine-type positive electrode active material.Type: GrantFiled: September 16, 2016Date of Patent: July 23, 2019Assignee: Toyota Jidosha Kabushiki KaishaInventors: Mayuko Osaki, Yohei Shindo, Manabu Imano, Hideyuki Koga, Hidenori Miki
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Patent number: 10355267Abstract: A method is provided where an anode of an all-solid-state lithium ion secondary battery is easily doped with lithium and to provide a small resistance at a low battery capacity. The method includes a manufacturing method of a cathode including mixing at least a conductive assistant (C1) and a sulfide solid electrolyte (E1) to obtain a mixture; and mixing at least one cathode active material, a solid electrolyte (E2) and the mixture obtained from the first step to obtain a cathode mixture, wherein an amount of energy added to the sulfide solid electrolyte (E1) is larger than an amount of energy added to the solid electrolyte (E2), and the mixture is a material that releases lithium ions at a potential lower than a potential at which the cathode active material releases and occludes lithium ions. Manufacturing methods for a cathode and an all-solid-state lithium ion secondary battery including the cathode mixture are also disclosed.Type: GrantFiled: February 3, 2017Date of Patent: July 16, 2019Assignee: Toyota Jidosha Kabuhiki KaishaInventors: Norihiro Ose, Hikaru Aso, Keisuke Omori, Hajime Hasegawa, Mitsutoshi Otaki, Hideyuki Koga
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Publication number: 20180151878Abstract: The present invention relates to an anode material for lithium-ion batteries. The anode material for lithium-ion batteries is represented by the molecular formula: MxNyTizO(x+3y+4z)/2, where: 0?x?8, 1?y?8, and 1?z?8; M is an alkali metal selected from the group consisting of Li, Na, and K; and N is a group VA element selected from the group consisting of P, Sb, and Bi or a rare earth metal selected from the group consisting of Nd, Pm, Sm, Eu, Yb, and La. The anode material of the present invention has a delithiation potential of 0.8 to 1.2 V vs. Li+/Li, and has a better potential plateau, better cycle performance, and better output-input properties, than a titanium-based anode material.Type: ApplicationFiled: November 9, 2017Publication date: May 31, 2018Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Shanghai Jiao Tong UniversityInventors: Li YANG, Zhengxi ZHANG, Jun HUANG, Qinghua TIAN, Hideyuki KOGA
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Patent number: 9920426Abstract: A method for producing a lithium phosphorus oxynitride layer having high ionic conductivity is provided. The method for producing a lithium phosphorus oxynitride layer on a substrate by atomic layer deposition comprises an atmosphere interchanging step, wherein the atmosphere surrounding the substrate is alternately switched between a first atmosphere, containing a first precursor such as a dialkyl phosphoramidate and/or alkyl phosphorodiamidate, and a second atmosphere, containing a second precursor such as a lithium hexaalkyl disilazide.Type: GrantFiled: September 2, 2016Date of Patent: March 20, 2018Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yohei Shindo, Taishi Shiotsuki, Hideyuki Koga, Maarit Karppinen, Mikko Nisula
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Publication number: 20180047965Abstract: An object of the present disclosure is to provide a lithium ion battery with low resistance to ion conduction. The present disclosure achieves the object by providing a lithium ion battery comprising: a cathode active material; an anode active material; an insulating oxide with neither electron conductivity nor ion conductivity that is formed in an interface between the cathode active material and the anode active material, and contains at least one kind of an element included in the cathode active material and at least one kind of an element included in the anode active material; and an electrolyte material that is an ion conducting path between the cathode active material and the anode active material; wherein the cathode active material comprises Li, at least one kind of Co, Mn, Ni, and Fe, and O; and the anode active material comprises at least one kind of Si, Li and Ti.Type: ApplicationFiled: July 20, 2017Publication date: February 15, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hideyuki KOGA
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Publication number: 20170244097Abstract: A method is provided where an anode of an all-solid-state lithium ion secondary battery is easily doped with lithium and to provide a small resistance at a low battery capacity. The method includes a manufacturing method of a cathode including mixing at least a conductive assistant (C1) and a sulfide solid electrolyte (E1) to obtain a mixture; and mixing at least one cathode active material, a solid electrolyte (E2) and the mixture obtained from the first step to obtain a cathode mixture, wherein an amount of energy added to the sulfide solid electrolyte (E1) is larger than an amount of energy added to the solid electrolyte (E2), and the mixture is a material that releases lithium ions at a potential lower than a potential at which the cathode active material releases and occludes lithium ions. Manufacturing methods for a cathode and an all-solid-state lithium ion secondary battery including the cathode mixture are also disclosed.Type: ApplicationFiled: February 3, 2017Publication date: August 24, 2017Inventors: Norihiro OSE, Hikaru ASO, Keisuke OMORI, Hajime HASEGAWA, Mitsutoshi OTAKI, Hideyuki KOGA
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Publication number: 20170084912Abstract: An all-solid-state battery having an olivine-type positive electrode active material and a sulfur solid electrolyte and a method for producing the all-solid-state battery is provided. The positive electrode active material is a positive electrode active material in which primary particles aggregate into secondary particles. The primary particles have an olivine-type positive electrode active material and a coating layer that coats all or a portion of the olivine-type positive electrode active material. The coating layer contains a transition metal derived from the olivine-type positive electrode active material, lithium, phosphorous and oxygen as components thereof, and the concentration of the transition metal is lower the concentration of the olivine-type positive electrode active material.Type: ApplicationFiled: September 16, 2016Publication date: March 23, 2017Inventors: Mayuko Osaki, Yohei Shindo, Manabu Imano, Hideyuki Koga, Hidenori Miki
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Publication number: 20170067161Abstract: A method for producing a lithium phosphorus oxynitride layer having high ionic conductivity is provided. The method for producing a lithium phosphorus oxynitride layer on a substrate by atomic layer deposition comprises an atmosphere interchanging step, wherein the atmosphere surrounding the substrate is alternately switched between a first atmosphere, containing a first precursor such as a dialkyl phosphoramidate and/or alkyl phosphorodiamidate, and a second atmosphere, containing a second precursor such as a lithium hexaalkyl disilazide.Type: ApplicationFiled: September 2, 2016Publication date: March 9, 2017Inventors: Yohei Shindo, Taishi Shiotsuki, Hideyuki Koga, Maarit Karppinen, Mikko Nisula
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Patent number: 9455445Abstract: The main object of the present invention is to provide a cathode active material for a lithium secondary battery with high theoretical capacity. The present invention solves the problem by providing a cathode active material for a lithium secondary battery, wherein the cathode active material comprises a crystal structure belonging to a space group C12/c1, and is represented by (Na1-?Li?)xM1-yNy(PO4)z (0.5???1, 2.5?x?3.5, 0?y?0.5, 1.5?z?2.5, M is at least one of V and Fe, and N is at least one of Co, Ni and Mn).Type: GrantFiled: July 28, 2015Date of Patent: September 27, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hideyuki Koga
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Publication number: 20160043399Abstract: The main object of the present invention is to provide a cathode active material for a lithium secondary battery with high theoretical capacity. The present invention solves the problem by providing a cathode active material for a lithium secondary battery, wherein the cathode active material comprises a crystal structure belonging to a space group C12/c1, and is represented by (Na1-?Li?)xM1-yNy(PO4)z (0.5???1, 2.5?x?3.5, 0?y?0.5, 1.5?z?2.5, M is at least one of V and Fe, and N is at least one of Co, Ni and Mn).Type: ApplicationFiled: July 28, 2015Publication date: February 11, 2016Inventor: Hideyuki KOGA
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Patent number: 8852799Abstract: An object of the invention is to provide an inexpensive non-aqueous electrolyte secondary battery that allows reversible charge and discharge to be carried out and can be used for a long period because of a stable non-aqueous electrolyte used therein. The invention provides a non-aqueous electrolyte secondary battery including a positive electrode including a positive electrode active material and capable of storing and releasing sodium, a negative electrode capable of storing and releasing sodium, and a non-aqueous electrolyte, and the positive electrode active material includes sodium, nickel, manganese, and a transition metal that can exist in a hexavalent state. An example of the transition metal that can exist in a hexavalent state may include tungsten (W). An example of the negative electrode may include a sodium metal capable of storing and releasing sodium ions.Type: GrantFiled: September 4, 2006Date of Patent: October 7, 2014Assignee: C/O Intellectual Property H.Q., Sanyo Electric Co., Ltd.Inventors: Masaharu Itaya, Hideyuki Koga, Kumiko Kanai, Takao Inoue, Masahisa Fujimoto
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Patent number: 8603672Abstract: A main object of the invention is to provide a cathode active material used to form a lithium secondary battery having the improved cycle characteristics and output. The invention attains the object by providing a semiconductor-covered cathode active material comprising: a cathode active material; and a pn junction semiconductor covering layer which comprises an n-type semiconductor covering layer that covers a surface of the cathode active material and a p-type semiconductor covering layer that covers the surface of the n-type semiconductor covering layer.Type: GrantFiled: January 7, 2009Date of Patent: December 10, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hideyuki Koga
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Patent number: 8349496Abstract: A non-aqueous electrolyte secondary battery having a negative electrode, a non-aqueous electrolyte, and a positive electrode having a positive electrode active material comprising sodium oxide, is characterized in that the sodium oxide contains lithium, and the molar amount of the lithium is less than the molar amount of the sodium.Type: GrantFiled: February 9, 2012Date of Patent: January 8, 2013Assignee: SANYO Electric Co., Ltd.Inventors: Motoharu Saito, Hideyuki Koga, Katsutoshi Takeda, Masahisa Fujimoto
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Publication number: 20120135319Abstract: A non-aqueous electrolyte secondary battery having a negative electrode, a non-aqueous electrolyte, and a positive electrode having a positive electrode active material comprising sodium oxide, is characterized in that the sodium oxide contains lithium, and the molar amount of the lithium is less than the molar amount of the sodium.Type: ApplicationFiled: February 9, 2012Publication date: May 31, 2012Applicant: SANYO ELECTRIC CO., LTD.Inventors: Motoharu SAITO, Hideyuki KOGA, Katsutoshi TAKEDA, Masahisa FUJIMOTO
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Patent number: 8178243Abstract: A method of producing a non-aqueous electrolyte secondary battery having a negative electrode, a non-aqueous electrolyte, and a positive electrode having a positive electrode active material comprising sodium oxide, characterized in that: the sodium oxide contains lithium; and the molar amount of the lithium is less than the molar amount of the sodium.Type: GrantFiled: November 15, 2006Date of Patent: May 15, 2012Assignee: SANYO Electric Co., Ltd.Inventors: Motoharu Saito, Hideyuki Koga, Katsutoshi Takeda, Masahisa Fujimoto
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Patent number: 8067118Abstract: A mixed positive electrode active material is used. The mixed positive electrode active material is obtained by mixing a layered oxide whose initial charge-discharge efficiency when lithium metal is used for a counter electrode is less than 100% (hereinafter referred to as a first layered oxide) and a layered oxide whose initial charge-discharge efficiency is 100% or more (hereinafter referred to as a second layered oxide). Examples of the first layered oxide include Li1+aMnxCoyNizO2. A sodium oxide such as LiANaBMnXCoYNiZO2 other than a layered compound from which lithium is previously extracted by acid treatment or the like can be used as the second layered oxide whose initial charge-discharge efficiency is 100% or more. A layered oxide obtained by replacing (ion exchange) sodium in the foregoing LiANaBMnXCoYNiZO2 with lithium can be also used as the second layered oxide.Type: GrantFiled: December 26, 2007Date of Patent: November 29, 2011Assignee: Sanyo Electric Co., Ltd.Inventors: Motoharu Saito, Hideyuki Koga, Katsutoshi Takeda, Hiroshi Sawada, Masahisa Fujimoto
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Publication number: 20110111291Abstract: A main object of the invention is to provide a cathode active material used to form a lithium secondary battery having the improved cycle characteristics and output. The invention attains the object by providing a semiconductor-covered cathode active material comprising: a cathode active material; and a pn junction semiconductor covering layer which comprises an n-type semiconductor covering layer that covers a surface of the cathode active material and a p-type semiconductor covering layer that covers the surface of the n-type semiconductor covering layer.Type: ApplicationFiled: January 7, 2009Publication date: May 12, 2011Inventor: Hideyuki Koga
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Patent number: 7838151Abstract: A positive electrode active material including lithium (Li), nickel (Ni), manganese (Mn) and a transition metal that can be in the hexavalent state is used. As the transition metal that can be in the hexavalent state, for example, one or both of tungsten (W) and molybdenum (Mo) can be used. As the positive electrode active material including a plurality of materials as mentioned above, LiNi0.5Mn0.5O2 can be used. As a negative electrode, a carbon material or a silicon material capable of storing and releasing lithium ions can be used.Type: GrantFiled: September 8, 2006Date of Patent: November 23, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Hideyuki Koga, Hiroshi Sawada, Katsutoshi Takeda, Masahisa Fujimoto