Patents by Inventor Hideaki Fujita

Hideaki Fujita 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).

  • Patent number: 10910675
    Abstract: A nonaqueous electrolyte secondary battery according to the present invention includes: an electrode body including a positive electrode including a positive-electrode active material layer; an external terminal connected to the electrode body; a nonaqueous electrolyte including a gas generant, and a current interrupt device. A content of the gas generant is at least 4 mass %. The positive-electrode active material layer includes, as a positive-electrode active material, a complex oxide containing at least zirconium (Zr) and calcium (Ca) as constituent elements. When a sum total of metal elements, except metal that becomes a charge carrier, in the complex oxide is 100 mol % in terms of a mole percentage, the complex oxide contains Zr from 0.1 mol % to 0.5 mol % inclusive and Ca from 0.1 mol % to 0.3 mol % inclusive.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: February 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideyuki Saka, Keiichi Takahashi, Hideaki Fujita
  • Patent number: 10727528
    Abstract: A method of producing a lithium ion secondary battery includes preparing a case in which an electrode group including at least a positive electrode and a negative electrode is accommodated; impregnating a first electrolyte solution into the electrode group, lowering a potential of the negative electrode to a first potential, injecting FEC into a case, and lowering a potential of the negative electrode to a second potential. The negative electrode contains at least graphite and silicon oxide. The first electrolyte solution does not contain FEC. An additive has a reductive decomposition potential of 0.5 V (vs. Li+/Li) or more and 1.5 V (vs. Li+/Li) or less. The first potential is higher than 0.2 V (vs. Li+/Li) and is equal to or lower than the reductive decomposition potential. The second potential is 0.2 V (vs. Li+/Li) or less.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: July 28, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Iguchi, Hideaki Fujita, Hideki Sano, Kaoru Inoue
  • Patent number: 10683253
    Abstract: Disclosed herein is a method for producing high-purity terephthalic acid, including steps of dissolving crude terephthalic acid crystal in water and performing catalytic hydrogenation treatment, depressurizing and cooling a reaction liquid after the catalytic hydrogenation treatment in stages with two or more stages of crystallization vessels, to crystallize terephthalic acid to obtain a terephthalic acid slurry, introducing the terephthalic acid slurry into an upper portion of a mother liquor replacement tower, bringing the terephthalic acid crystal into contact with an upward flow of replacement water introduced from a tower lower compartment of the mother liquor replacement tower while making the terephthalic acid crystal settled down in the tower, withdrawing the terephthalic acid crystal as slurry with the replacement water from the tower lower compartment, subjecting the slurry withdrawn from the tower lower compartment to solid-liquid separation into water and the terephthalic acid crystal, and drying
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: June 16, 2020
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Goh Nakamura, Hideaki Fujita, Kotaro Murakami, Ryusuke Shigematsu
  • Publication number: 20200056724
    Abstract: A valve device includes: valves configured to control a flow of processing gases supplied to a process vessel; a housing in which first flow paths through which the processing gases flow are formed; a heat diffuser configured to cover the housing and diffuse heat of the housing; a heating part configured to cover the housing covered with the heat diffuser and heat the housing via the heat diffuser; a supply configured to supply a coolant to a second flow path formed between the housing and the heat diffuser; and a controller configure to control the heating part to heat the housing to a first temperature when a predetermined process is performed on a target substrate, and before a start of a cleaning process of the process vessel, control the heating part to stop heating of the housing and control the supply to supply the coolant to the second flow path.
    Type: Application
    Filed: August 12, 2019
    Publication date: February 20, 2020
    Inventors: Tomohisa KIMOTO, Yuichi FURUYA, Takashi KAKEGAWA, Eiichi KOMORI, Hideaki FUJITA, Hiroyuki MORI
  • Patent number: 10530013
    Abstract: A method of manufacturing a non-aqueous electrolyte secondary battery includes: (A) constructing an electrode group including a positive electrode and a negative electrode; (B) impregnating the electrode group with a first electrolyte solution; (C) charging the electrode group impregnated with the first electrolyte solution to a voltage of 4.3 V or more; and (E) manufacturing the non-aqueous electrolyte secondary battery by impregnating the electrode group with a second electrolyte solution after the charging. The first electrolyte solution includes a first solvent, a first lithium salt, and biphenyl. The first solvent does not include 1,2-dimethoxyethane. The second electrolyte solution includes a second solvent and a second lithium salt. The second solvent includes 1,2-dimethoxyethane.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: January 7, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki Iguchi, Hideaki Fujita
  • Patent number: 10454140
    Abstract: In an electrode body for use in non-aqueous electrolyte secondary battery, a first end of a separator is located more interiorly than one positive electrode end of a positive electrode plate in a width direction, located more exteriorly than one end of a coated positive electrode portion of the positive electrode plate, and located more exteriorly than one end of a coated negative electrode portion of a negative electrode plate. The first end of the separator is thicker than an intermediate portion. A second end of the separator is located more interiorly than an other negative electrode end of the negative electrode plate in the width direction, located more exteriorly than the other end of the coated positive electrode portion of the positive electrode plate, and located more exteriorly than an other end of the coated negative electrode portion of the negative electrode plate. The second end of the separator is thicker than the intermediate portion.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: October 22, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiro Nakano, Hideaki Fujita
  • Patent number: 10424816
    Abstract: A lithium-ion secondary battery (100) includes a wound electrode body (80), a nonaqueous electrolyte, and a box-shaped case (50). The wound electrode body includes a positive electrode (10), a negative electrode (20), and a separator (40). The box-shaped case contains the wound electrode body and the nonaqueous electrolyte. The wound electrode body includes a starting-end-side negative electrode remainder portion (22) provided in a winding-direction starting end portion (81) of the wound electrode body. The winding-direction starting end portion exists at a winding center side. The starting-end-side negative electrode remainder portion protrudes toward the winding center side along a winding direction beyond the positive electrode. A surplus nonaqueous electrolyte exists in a gap between the wound electrode body and the box-shaped case.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: September 24, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukiyoshi Ueno, Tomoyuki Mizuno, Kunimitsu Yamamoto, Junko Ohira, Kaoru Inoue, Hideaki Fujita, Hideki Sano
  • Patent number: 10385001
    Abstract: A method of terephthalic acid production in which slurry of crude terephthalic acid obtained through liquid-phase oxidation of a p-phenylene compound or a terephthalic acid slurry resulting from catalytic hydrogenation of the crude terephthalic acid is introduced into an upper part of a dispersion medium replacement tower while a second dispersion medium for replacement is introduced from a lower part of the dispersion medium replacement tower to perform dispersion medium replacement. The method is capable of enabling the dispersion medium replacement tower to continue stable operation while maintaining an extremely high efficiency of dispersion medium replacement.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: August 20, 2019
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Goh Nakamura, Hideaki Fujita, Kotaro Murakami, Ryusuke Shigematsu
  • Publication number: 20190233361
    Abstract: A method for producing high-purity terephthalic acid, comprising following steps (a) to (e): (a) a step of obtaining a crude terephthalic acid crystal by liquid-phase oxidizing a p-phenylene compound, (b) a step of dissolving the crude terephthalic acid crystal in water and then subjecting to catalytic hydrogenation treatment, (c) a step of depressurizing and cooling a reaction liquid after the catalytic hydrogenation treatment in stages with two or more stages of crystallization vessels, to crystallize terephthalic acid to obtain a terephthalic acid slurry, (d) a step of introducing the terephthalic acid slurry into an upper portion of a mother liquor replacement tower, bringing the terephthalic acid crystal into contact with an upward flow of replacement water introduced from a tower lower compartment of the mother liquor replacement tower while making the terephthalic acid crystal settled down in the tower, and withdrawing the terephthalic acid crystal as slurry with the replacement water from the tower
    Type: Application
    Filed: August 28, 2017
    Publication date: August 1, 2019
    Applicant: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Goh NAKAMURA, Hideaki FUJITA, Kotaro MURAKAMI, Ryusuke SHIGEMATSU
  • Publication number: 20190169109
    Abstract: A method of terephthalic acid production in which slurry of crude terephthalic acid obtained through liquid-phase oxidation of a p-phenylene compound or a terephthalic acid slurry resulting from catalytic hydrogenation of the crude terephthalic acid is introduced into an upper part of a dispersion medium replacement tower while a second dispersion medium for replacement is introduced from a lower part of the dispersion medium replacement tower to perform dispersion medium replacement. The method is capable of enabling the dispersion medium replacement tower to continue stable operation while maintaining an extremely high efficiency of dispersion medium replacement.
    Type: Application
    Filed: March 7, 2017
    Publication date: June 6, 2019
    Applicant: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Goh NAKAMURA, Hideaki FUJITA, Kotaro MURAKAMI, Ryusuke SHIGEMATSU
  • Publication number: 20190148762
    Abstract: A non-aqueous electrolyte secondary battery includes at least a positive electrode active material layer, a porous film, and a negative electrode active material layer. The negative electrode active material layer contains at least a graphite-based carbon material and silicon oxide. The porous film is interposed between the positive electrode active material layer and the negative electrode active material layer. The porous film contains at least a ceramic material. The negative electrode active material layer has a first spring constant. The porous film has a second spring constant. A ratio of the second spring constant to the first spring constant is higher than 1.
    Type: Application
    Filed: November 13, 2018
    Publication date: May 16, 2019
    Inventors: Koji Torita, Hideaki Fujita, Kaoru Inoue
  • Patent number: 10273197
    Abstract: A method for producing high-purity terephthalic acid, comprising following steps (a) to (c): the step (a); obtaining crude terephthalic acid crystal by liquid phase-oxidizing a p-phenylene compound; the step (b); obtaining a terephthalic acid crystal slurry by a catalytic hydrogenation treatment of the crude terephthalic acid crystal; and the step (c); introducing the terephthalic acid crystal slurry into an upper portion of a mother liquor replacement tower, and bringing the slurry into contact with an upward flow of replacement water introduced from a bottom portion of the mother liquor replacement tower while making the terephthalic acid crystal settled down in the tower, and extracting the terephthalic acid crystal as a slurry with the replacement water from the tower bottom portion, wherein (1) a stirring blade unit is disposed in a slurry layer in the bottom portion of the mother liquor replacement tower, and fluidity of the slurry layer is maintained by rotating the stirring blade unit in such a way
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: April 30, 2019
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Goh Nakamura, Hideaki Fujita, Kotaro Murakami
  • Patent number: 10249878
    Abstract: A positive electrode and a negative electrode are stacked so as to face each other with a separator and a low spring constant film interposed therebetween. The positive electrode or the negative electrode has a first spring constant that is the lowest spring constant of the positive electrode, the negative electrode and the separator. The low spring constant film has a second spring constant. The second spring constant is lower than the first spring constant.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: April 2, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Torita, Hideaki Fujita, Kaoru Inoue, Tatsuya Hashimoto
  • Patent number: 10243196
    Abstract: A positive electrode mixture layer (12) includes a first layer (12a) that has a main surface MS and a second layer (12b) formed closer to the positive electrode current collector (11) side than the first layer (12a). A ratio of the volume of the first layer (12a) to the volume of the positive electrode mixture layer (12) is 20 to 75 vol %. The first layer (12a) contains lithium iron phosphate (LFP) (1) and lithium nickel cobalt manganese composite oxide (NCM) (2). A ratio of the mass of the LFP (1) to the total mass of the LFP (1) and the NCM (2) in the first layer (12a) is more than 0 and 80 mass % or less. The second layer (12b) contains NCM (2). A ratio of the mass of the LFP (1) to the total mass of the positive electrode active material in the positive electrode mixture layer (12) is 7.5 to 20 mass %. A maximum pore size of the first layer (12a) is 0.50 to 0.70 ?m.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: March 26, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideyuki Saka, Keiichi Takahashi, Hideaki Fujita, Tatsuya Hashimoto
  • Patent number: 10153481
    Abstract: Provided is a non-aqueous electrolyte secondary battery which exhibits excellent energy density and excellent input/output density (and especially output density in low SOC regions). This invention discloses a non-aqueous electrolyte secondary battery that includes a positive electrode, a negative electrode and a non-aqueous electrolyte. The positive electrode includes a positive electrode current collector and a positive electrode active material layers formed on the positive electrode current collector. The positive electrode active material layer has two regions that are demarcated in a surface direction of the positive electrode current collector, which are a first region 14a containing mainly a positive active material of lithium iron phosphate, and a second region 14b containing mainly a positive active material of a lithium-transition metal composite oxide.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: December 11, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideyuki Saka, Hideaki Fujita, Keiichi Takahashi
  • Publication number: 20180316040
    Abstract: A method of producing a lithium ion secondary battery includes preparing a case in which an electrode group including at least a positive electrode and a negative electrode is accommodated; impregnating a first electrolyte solution into the electrode group, lowering a potential of the negative electrode to a first potential, injecting FEC into a case, and lowering a potential of the negative electrode to a second potential. The negative electrode contains at least graphite and silicon oxide. The first electrolyte solution does not contain FEC. An additive has a reductive decomposition potential of 0.5 V (vs. Li+/Li) or more and 1.5 V (vs. Li+/Li) or less. The first potential is higher than 0.2 V (vs. Li+/Li) and is equal to or lower than the reductive decomposition potential. The second potential is 0.2 V (vs. Li+/Li) or less.
    Type: Application
    Filed: April 25, 2018
    Publication date: November 1, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki IGUCHI, Hideaki FUJITA, Hideki SANO, Kaoru INOUE
  • Publication number: 20180230078
    Abstract: A method for producing high-purity terephthalic acid, comprising following steps (a) to (c): the step (a); obtaining crude terephthalic acid crystal by liquid phase-oxidizing a p-phenylene compound; the step (b); obtaining a terephthalic acid crystal slurry by a catalytic hydrogenation treatment of the crude terephthalic acid crystal; and the step (c); introducing the terephthalic acid crystal slurry into an upper portion of a mother liquor replacement tower, and bringing the slurry into contact with an upward flow of replacement water introduced from a bottom portion of the mother liquor replacement tower while making the terephthalic acid crystal settled down in the tower, and extracting the terephthalic acid crystal as a slurry with the replacement water from the tower bottom portion, wherein (1) a stirring blade unit is disposed in a slurry layer in the bottom portion of the mother liquor replacement tower, and fluidity of the slurry layer is maintained by rotating the stirring blade unit in such a way
    Type: Application
    Filed: July 21, 2016
    Publication date: August 16, 2018
    Applicant: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Goh NAKAMURA, Hideaki FUJITA, Kotaro MURAKAMI
  • Publication number: 20180108938
    Abstract: A method of manufacturing a non-aqueous electrolyte secondary battery includes: (A) constructing an electrode group including a positive electrode and a negative electrode; (B) impregnating the electrode group with a first electrolyte solution; (C) charging the electrode group impregnated with the first electrolyte solution to a voltage of 4.3 V or more; and (E) manufacturing the non-aqueous electrolyte secondary battery by impregnating the electrode group with a second electrolyte solution after the charging. The first electrolyte solution includes a first solvent, a first lithium salt, and biphenyl. The first solvent does not include 1,2-dimethoxyethane. The second electrolyte solution includes a second solvent and a second lithium salt. The second solvent includes 1,2-dimethoxyethane.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 19, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki IGUCHI, Hideaki FUJITA
  • Publication number: 20180097254
    Abstract: In an electrode body for use in non-aqueous electrolyte secondary battery, a first end of a separator is located more interiorly than one positive electrode end of a positive electrode plate in a width direction, located more exteriorly than one end of a coated positive electrode portion of the positive electrode plate, and located more exteriorly than one end of a coated negative electrode portion of a negative electrode plate. The first end of the separator is thicker than an intermediate portion. A second end of the separator is located more interiorly than an other negative electrode end of the negative electrode plate in the width direction, located more exteriorly than the other end of the coated positive electrode portion of the positive electrode plate, and located more exteriorly than an other end of the coated negative electrode portion of the negative electrode plate. The second end of the separator is thicker than the intermediate portion.
    Type: Application
    Filed: December 6, 2017
    Publication date: April 5, 2018
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiro Nakano, Hideaki Fujita
  • Publication number: 20180090763
    Abstract: A positive electrode and a negative electrode are stacked so as to face each other with a separator and a low spring constant film interposed therebetween. The positive electrode or the negative electrode has a first spring constant that is the lowest spring constant of the positive electrode, the negative electrode and the separator. The low spring constant film has a second spring constant. The second spring constant is lower than the first spring constant.
    Type: Application
    Filed: August 24, 2017
    Publication date: March 29, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Torita, Hideaki Fujita, Kaoru Inoue, Tatsuya Hashimoto