Patents by Inventor Masaya Naoi
Masaya Naoi 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: 11811046Abstract: Provided is a method for manufacturing an electrode by doping an active material included a layer of an electrode precursor with alkali metal. The electrode precursor and a counter electrode member are brought into contact with a solution containing an alkali metal ion in a dope bath. The counter electrode member includes a conductive base material, an alkali metal-containing plate, and a member having an opening. The member having the opening is located between the conductive base material and the alkali metal-containing plate. The member having the opening is, for example, a resin film having an opening.Type: GrantFiled: August 18, 2020Date of Patent: November 7, 2023Assignee: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Kazunari Aita, Masaya Naoi, Kenji Kojima, Masahiro Yamamoto
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Publication number: 20230042598Abstract: A doping system is configured to dope an active material included in an electrode with an alkali metal. The doping system includes a doping bath, a conveyor unit, a connection unit, and a drying unit. The doping bath is configured to store a solution containing alkali metal ion and a counter electrode unit. The conveyor unit is configured to convey the electrode along a path that passes through the doping bath. The connection unit includes an electrically conductive electric power supply roller that contacts the electrode, and is configured to couple the electrode to the counter electrode unit. The drying unit is configured to spray a gas onto the electrode that passes through the doping bath and is being conveyed to the electric power supply roller.Type: ApplicationFiled: November 17, 2020Publication date: February 9, 2023Applicant: Musashi Energy Solutions Co., Ltd.Inventors: Masaya NAOI, Tomoya IWAZAKI, Koji NODA
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Publication number: 20230022630Abstract: Provided is a method for manufacturing an electrode by doping an active material included a layer of an electrode precursor with alkali metal. The electrode precursor and a counter electrode member are brought into contact with a solution containing an alkali metal ion in a dope bath. The counter electrode member includes a conductive base material, an alkali metal-containing plate, and a member having an opening. The member having the opening is located between the conductive base material and the alkali metal-containing plate. The member having the opening is, for example, a resin film having an opening.Type: ApplicationFiled: August 18, 2020Publication date: January 26, 2023Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Kazunari AITA, Masaya NAOI, Kenji KOJIMA, Masahiro YAMAMOTO
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Publication number: 20220302434Abstract: A doped electrode is manufactured by an electrode manufacturing method. The doped electrode includes an active material doped with an alkali metal. In the electrode manufacturing method, a dope solution is brought into contact with an electrode. The electrode includes a current collector and an active material layer. The active material layer is formed on a surface of the current collector and includes the active material. The dope solution includes an alkali metal ion and flows. In the electrode manufacturing method, for example, the alkali metal is electrically doped to the active material using a counter electrode member arranged to face the electrode.Type: ApplicationFiled: June 25, 2020Publication date: September 22, 2022Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Hirobumi SUZUKI, Kenji KOJIMA, Masaya NAOI, Nobuo ANDO, Hiroki YAKUSHIJI, Kazunari AITA, Masahiro YAMAMOTO
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Publication number: 20220158156Abstract: An electrode manufacturing system includes: a doping unit; a cleaning unit: and a conveyor unit. The doping unit performs a process of doping an active material in a strip-shaped electrode with an alkali metal, the strip-shaped electrode including an active material layer formed portion in which an active material layer including the active material is formed, and an active material layer unformed portion in which the active material layer is not formed. The cleaning unit cleans the active material layer unformed portion that is adjacent to the active material layer formed portion. The conveyor unit conveys the electrode from the doping unit to the cleaning unit.Type: ApplicationFiled: December 26, 2019Publication date: May 19, 2022Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Masaya NAOI, Kazunari AITA
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Publication number: 20220085350Abstract: The electrode manufacturing system comprises a cutting device. The cutting device cuts an electrode material along one direction of the electrode material to manufacture electrodes. The electrode material comprises first sections and a second section. The first section includes an active material doped with alkali metal, and extends in the one direction. The second section is located between two adjacent first sections of the first sections. In the second section, the active material doped with alkali metal is absent. The cutting device cuts the second section.Type: ApplicationFiled: November 27, 2019Publication date: March 17, 2022Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Hiroki YAKUSHIJI, Masaya NAOI, Kenji KOJIMA
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Publication number: 20220077448Abstract: A doping system dopes an active material with an alkali metal, the active material being contained in a layer of a strip-shaped electrode. The doping system includes a doping bath, a conveyor unit, a counter electrode unit, a connection unit, and a recovery unit. The doping bath stores a solution containing alkali metal ions. The conveyor unit conveys the electrode along a path passing through the doping bath. The counter electrode unit is housed in the doping bath. The connection unit electrically connects a conveyor roller provided in the conveyor unit with the counter electrode unit. The recovery unit collects in the doping bath the solution adhered to the electrode having passed through the doping bath.Type: ApplicationFiled: November 29, 2019Publication date: March 10, 2022Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Masaya NAOI, Kenji KOJIMA, Kazunari AITA
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Publication number: 20220037634Abstract: An electrode manufacturing apparatus dopes an active material in a strip-shaped electrode precursor having a layer including the active material with alkali metal. The electrode manufacturing apparatus includes a doping bath configured to store a solution including alkali metal ions; a conveyor unit configured to convey the electrode precursor along a path passing through the doping bath; a counter electrode unit housed in the doping bath and comprising a conductive base material and an alkali metal-containing plate arranged on the conductive base material; and a connection unit configured to electrically connect the electrode precursor and the counter electrode unit. A distance between the alkali metal-containing plate and the electrode precursor becomes greater as a measurement position of the distance becomes closer to a connection position in which the electrode precursor and the connection unit connect each other.Type: ApplicationFiled: June 19, 2019Publication date: February 3, 2022Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Kazunari AITA, Masaya NAOI, Tomoya IWAZAKI, Kenji NANSAKA
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Publication number: 20210384486Abstract: An electrode manufacturing apparatus manufactures a strip-shaped doped electrode by doping an active material contained in a layer of a strip-shaped electrode precursor with alkali metal. The electrode manufacturing apparatus includes a sensor configured to detect a mark that the electrode precursor has, at least one doping tank that stores a solution that contains alkali metal ions, a conveyer member configured to convey the electrode precursor along a path passing through the doping tank, a counter electrode member that is accommodated in the doping tank, a connector configured to electrically connect the electrode precursor and the counter electrode member, a power source configured to flow an electric current to the counter electrode member via the connector, and a power controller configured to control the power source based on a result of detection by the sensor.Type: ApplicationFiled: September 12, 2019Publication date: December 9, 2021Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Tomoya IWAZAKI, Kenji NANSAKA, Shinya OTANI, Kazuhide AKIYAMA, Masaya NAOI, Kazunari AITA
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Patent number: 11170947Abstract: Provided is a doping system in which an active material in a strip-shaped electrode precursor having a layer including an active material is doped with alkali metal. The doping system includes a doping tank, a conveying unit, a counter electrode unit, a connection unit, and a porous insulating member. The doping tank accommodates a solution including alkali metal ions. The conveying unit conveys the electrode precursor along a path passing through the inside of the doping tank. The counter electrode unit is accommodated in the doping tank. The connection unit electrically connects the electrode precursor and the counter electrode unit. The porous insulating member is disposed between the electrode precursor and the counter electrode unit, and is not in contact with the electrode precursor.Type: GrantFiled: February 24, 2017Date of Patent: November 9, 2021Assignee: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Masaya Naoi, Yukihiro Kawada, Hiroki Yakushiji, Kazunari Aita, Terukazu Kokubo
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Publication number: 20210159484Abstract: A lithium ion rechargeable battery includes an electrode assembly and an electrolyte solution. A negative electrode includes a negative electrode current collector and a negative electrode active material layer formed on a surface of the negative electrode. The negative electrode is doped with lithium. An aperture ratio of the negative electrode current collector is 0% or higher and 0.1% or lower. A discharge capacity ratio X, which is defined by Formula (1): X=C1/C2, is greater than 0, and 0.9 or less. C1 in the Formula (1) is a discharge capacity of a cell when the cell is charged and discharged at a cell voltage between 2.0 V and 4.3 V. C2 in the Formula (1) is a discharge capacity of the negative electrode when the negative electrode is charged and discharged between 0V vs. Li/Li+ and 3V vs. Li/Li+.Type: ApplicationFiled: April 18, 2019Publication date: May 27, 2021Applicant: MUSASHI ENERGY SOLUTIONS CO., LTD.Inventors: Hiroki YAKUSHIJI, Kazunari AITA, Tomohiro UTAKA, Masaya NAOI, Kenji KOJIMA, Norihiro YAMAMOTO, Nobuo ANDO
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Publication number: 20210090818Abstract: A power storage device includes: an electrode assembly, including a positive electrode, a separator, and a negative electrode; and an electrolyte solution. The negative electrode includes a negative electrode current collector, and a negative electrode active material layer formed on a surface of the negative electrode current collector. The negative electrode is doped with lithium. The power storage device includes first through-holes penetrating the negative electrode current collector in a thickness direction thereof. On at least one side of the negative electrode current collector, the power storage device includes second through-holes penetrating the negative electrode active material layer in a thickness direction thereof. An aperture ratio of the first through-holes on the negative electrode current collector, or an aperture ratio of the second through-holes on the negative electrode active material layer is 0.001% or higher and 1% or lower.Type: ApplicationFiled: February 21, 2019Publication date: March 25, 2021Applicant: JM Energy CorporationInventors: Kazunari AITA, Hiroki YAKUSHIJI, Hirobumi SUZUKI, Tomohiro UTAKA, Masaya NAOI, Kenji KOJIMA
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Publication number: 20190074143Abstract: Provided is a doping system in which an active material in a strip-shaped electrode precursor having a layer including an active material is doped with alkali metal. The doping system includes a doping tank, a conveying unit, a counter electrode unit, a connection unit, and a porous insulating member. The doping tank accommodates a solution including alkali metal ions. The conveying unit conveys the electrode precursor along a path passing through the inside of the doping tank. The counter electrode unit is accommodated in the doping tank. The connection unit electrically connects the electrode precursor and the counter electrode unit. The porous insulating member is disposed between the electrode precursor and the counter electrode unit, and is not in contact with the electrode precursor.Type: ApplicationFiled: February 24, 2017Publication date: March 7, 2019Applicant: JSR CorporationInventors: Masaya NAOI, Yukihiro KAWADA, Hiroki YAKUSHIJI, Kazunari AITA, Terukazu KOKUBO
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Patent number: 8410808Abstract: Provided is an anisotropic conductive connector and a prove member, each of which ensures that all of the conductive parts exhibit uniform conductivity when a pressing force is applied, even when the inspection target wafer has a large area and total number of inspection target electrodes of integrated circuits is 10,000 or more, and a wafer inspection system including the probe member.Type: GrantFiled: March 27, 2008Date of Patent: April 2, 2013Assignee: JSR CorporationInventors: Masaya Naoi, Hitoshi Fujiyama, Ichihiro Miura
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Publication number: 20120288747Abstract: The object of the present invention is to provide an electrochemical device, by which short circuit between electrode sheets can be prevented even when the electrode sheets come into contact with each other due to misregistration upon folding of the electrode sheets. The electrochemical device of the present invention is an electrochemical device having a electrode unit with a pair of band-like electrode sheets respectively folded so as to be alternately stacked in a state that the following respective electrode layers come into no contact with each other, wherein the pair of the electrode sheets each have a band-like current collector, a plurality of electrode layers respectively formed on plane regions surrounded by peripheral edge portions and folding edge portions in at least one surface of the current collector, and insulating films formed on respective both surfaces of the peripheral edge portions and folding edge portions in the current collector.Type: ApplicationFiled: January 18, 2011Publication date: November 15, 2012Applicant: JSR CorporationInventors: Masaya Naoi, Katsuhiko Hieda, Kinji Yamada
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Publication number: 20100127724Abstract: Provided is an anisotropic conductive connector and a prove member, each of which ensures that all of the conductive parts exhibit uniform conductivity when a pressing force is applied, even when the inspection target wafer has a large area and total number of inspection target electrodes of integrated circuits is 10,000 or more, and a wafer inspection system including the probe member.Type: ApplicationFiled: March 27, 2008Publication date: May 27, 2010Applicant: JSR CORPORATIONInventors: Masaya Naoi, Hitoshi Fujiyama, Ichihiro Miura
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Publication number: 20090015281Abstract: The method is a method for positioning a three-layered rectangular frame-like anisotropic conductive connector in order to inspect the electrical properties of an object for inspection. The positioning is carried out in the following manner. The three-layered anisotropic conductive sheet is composed of a first anisotropic conductive sheet, a center substrate and a second anisotropic conductive sheet. Markings and through-holes are formed on the center substrate, and semi-transparent protrusions and through-holes are formed on each of the first anisotropic conductive sheet and the second anisotropic conductive sheet.Type: ApplicationFiled: July 10, 2008Publication date: January 15, 2009Applicants: JSR CORPORATION, TOKYO ELECTRON LIMITEDInventors: Mutsuhiko Yoshioka, Akira Matsuura, Masaya Naoi, Takashi Amemiya, Syuichi Tsukada, Tomohisa Hoshino
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Patent number: 7323712Abstract: An anisotropically conductive connector, by which positioning, and holding and fixing to a wafer to be inspected can be conducted with ease even when the wafer has a large area, contains a frame plate having a plurality of anisotropically conductive film-arranging holes formed corresponding to regions of electrodes to be inspected of a wafer, and a plurality of elastic anisotropically conductive films arranged in the respective anisotropically conductive film-arranging holes and supported by the inner peripheral edge thereabout.Type: GrantFiled: August 17, 2005Date of Patent: January 29, 2008Assignee: JSR CorporationInventors: Terukazu Kokubo, Koji Seno, Masaya Naoi, Kazuo Inoue
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Anisotropic conductive connector, probe member, wafer inspecting device, and wafer inspecting method
Patent number: 7095241Abstract: Disclosed herein are an anisotropically conductive connector, by which good conductivity is retained over a long period of time even when it is used repeatedly over many times or repeatedly used under a high-temperature environment, and applications thereof. The anisotropically conductive connector is an anisotropically conductive connector having an elastic anisotropically conductive film, in which a plurality of conductive parts for connection extending in a thickness-wise direction of the film have been formed.Type: GrantFiled: August 7, 2003Date of Patent: August 22, 2006Assignee: JSR CorporationInventors: Ryoji Setaka, Masaya Naoi, Katsumi Sato -
Publication number: 20060148285Abstract: An anisotropically conductive connector including elastic anisotropically conductive films each having a functional part, in which a plurality of conductive parts for connection containing conductive particles and extending in a thickness-wise direction of the film have been arranged in a state mutually insulated by an insulating part. Assuming that a thickness of the conductive parts for connection in the functional part of the elastic anisotropically conductive film is T1 and a thickness of the insulating part in the functional part is T2, a ratio (T2/T1) is at least 0.Type: ApplicationFiled: February 13, 2004Publication date: July 6, 2006Applicant: JSR CorporationInventor: Masaya Naoi