Patents by Inventor Katsuhito Miura
Katsuhito Miura 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: 10636587Abstract: A low-cost electrochemical capacitor is provided which has high capacity and excellent charging and discharging characteristics, simultaneously has excellent safety and reliability, and has the basic performance as a capacitor, achieved in that between a negative electrode and a positive electrode, a solution of a specific polyether copolymer, an inorganic or organic filler, and an electrolyte salt is selected as appropriate as the electrolyte and is held between the two electrodes. This low-cost electrochemical capacitor has the basic performance of a capacitor, has high capacity and excellent charging and discharging characteristics, and simultaneously has excellent safety and reliability.Type: GrantFiled: March 30, 2016Date of Patent: April 28, 2020Assignee: OSAKA SODA CO., LTD.Inventors: Takashi Matsuo, Masato Tabuchi, Hideaki Ueda, Katsuhito Miura
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Patent number: 10510495Abstract: A low-cost electrochemical capacitor is provided which has high capacity and excellent charging and discharging characteristics, simultaneously has excellent safety and reliability, and has the basic performance as a capacitor, achieved in that, as the electrolyte between a negative electrode and a positive electrode, a solution of an ambient temperature molten salt and a specific polyether copolymer is allowed to gel using a specific photoreaction initiator and is held between the two electrodes. This low-cost electrochemical capacitor has the basic performance of a capacitor, has high capacity and excellent charging and discharging characteristics without use of a separator, and simultaneously has excellent safety and reliability.Type: GrantFiled: March 30, 2016Date of Patent: December 17, 2019Assignee: OSAKA SODA CO., LTD.Inventors: Takashi Matsuo, Masato Tabuchi, Hideaki Ueda, Katsuhito Miura
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Patent number: 10483545Abstract: Provided is a binder for battery electrodes which includes a polymer including: structural units (1) derived from a (meth)acrylate monomer (A) having a hydroxyl group; structural units (2) derived from a polyfunctional (meth)acrylate monomer (B); and structural units (3) derived from a reactive surfactant (C). This binder is used to prepare electrodes, and produce batteries such as lithium ion secondary batteries. Provided are: an aqueous binder which has a low environmental impact, exhibits excellent binding properties, and, notably, does not cause oxidation degradation under an electrode environment; and an electrode and a battery which use said binder.Type: GrantFiled: March 3, 2015Date of Patent: November 19, 2019Assignee: OSAKA SODA CO., LTD.Inventors: Tomoyuki Yano, Miwa Nakamura, Takashi Matsuo, Yasushi Miki, Katsuhito Miura
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Patent number: 10014525Abstract: This binder for battery electrodes is characterized by containing a polymer including: (A) a structural unit represented by general formula (1) and derived from a monomer having a hydroxyl group (in the formula, R1 is a hydrogen or a C1-C4 straight-chain or branched alkyl group, R2 and R3 are each a hydrogen or a C1-C4 straight-chained or branched alkyl group, and n is an integer of 2-30); (B) a structural unit derived from an ethylenically unsaturated monomer having at least one functional group selected from the group consisting of a difunctional carboxylic acid group, a nitrile group and a ketone group; and (C) a structural unit derived from a polyfunctional (meth)acrylate monomer having at most five functional groups.Type: GrantFiled: January 24, 2014Date of Patent: July 3, 2018Assignee: OSAKA SODA CO., LTD.Inventors: Takashi Matsuo, Tomoyuki Yano, Yasushi Miki, Katsuhito Miura
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Patent number: 10003077Abstract: Disclosed is a battery electrode binder containing a polymer including (1) a constituent unit derived from a (meth)acrylate monomer (A) having a hydroxyl group, (2) a constituent unit derived from a vinyl ester monomer (B), and (3) a constituent unit derived from a polyfunctional (meth)acrylate monomer (C). Using the binder, an electrode is produced and adopted in a battery such as a lithium ion secondary battery. Obtained are: an aqueous binder that has a low environmental impact, has high adhesiveness, and in particular does not cause oxidative degradation in the electrode environment; and a battery and electrode using the binder.Type: GrantFiled: October 28, 2014Date of Patent: June 19, 2018Assignee: OSAKA SODA CO., LTD.Inventors: Takashi Matsuo, Tomoyuki Yano, Yasushi Miki, Katsuhito Miura
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Publication number: 20180096800Abstract: A low-cost electrochemical capacitor is provided which has high capacity and excellent charging and discharging characteristics, simultaneously has excellent safety and reliability, and has the basic performance as a capacitor, achieved in that, as the electrolyte between a negative electrode and a positive electrode, a solution of an ambient temperature molten salt and a specific polyether copolymer is allowed to gel using a specific photoreaction initiator and is held between the two electrodes. This low-cost electrochemical capacitor has the basic performance of a capacitor, has high capacity and excellent charging and discharging characteristics without use of a separator, and simultaneously has excellent safety and reliability.Type: ApplicationFiled: March 30, 2016Publication date: April 5, 2018Applicant: OSAKA SODA CO., LTD.Inventors: Takashi MATSUO, Masato TABUCHI, Hideaki UEDA, Katsuhito MIURA
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Publication number: 20180090282Abstract: A low-cost electrochemical capacitor is provided which has high capacity and excellent charging and discharging characteristics, simultaneously has excellent safety and reliability, and has the basic performance as a capacitor, achieved in that between a negative electrode and a positive electrode, a solution of a specific polyether copolymer, an inorganic or organic filler, and an electrolyte salt is selected as appropriate as the electrolyte and is held between the two electrodes. This low-cost electrochemical capacitor has the basic performance of a capacitor, has high capacity and excellent charging and discharging characteristics, and simultaneously has excellent safety and reliability.Type: ApplicationFiled: March 30, 2016Publication date: March 29, 2018Applicant: OSAKA SODA CO., LTD.Inventors: Takashi MATSUO, Masato TABUCHI, Hideaki UEDA, Katsuhito MIURA
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Patent number: 9608273Abstract: The purpose of the present invention is to provide: an aqueous binder having high adhesiveness, that in particular does not exhibit oxidative degradation in an electrode environment, and having little environmental load; and an electrode and a battery that use same. Disclosed is a battery electrode binder containing: (A) a constituent unit derived from a monomer having a hydroxyl group; and (B) a constituent unit derived from a polyfunctional (meth)acrylate having no more than 5 functions. An electrode is prepared using this binder and is used in a battery such as a lithium-ion secondary battery.Type: GrantFiled: May 28, 2013Date of Patent: March 28, 2017Assignee: DAISO CO., LTD.Inventors: Takashi Matsuo, Tomoyuki Yano, Yasushi Miki, Katsuhito Miura
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Publication number: 20170069913Abstract: Provided is a binder for battery electrodes which includes a polymer including: structural units (1) derived from a (meth)acrylate monomer (A) having a hydroxyl group; structural units (2) derived from a polyfunctional (meth)acrylate monomer (B); and structural units (3) derived from a reactive surfactant (C). This binder is used to prepare electrodes, and produce batteries such as lithium ion secondary batteries. Provided are: an aqueous binder which has a low environmental impact, exhibits excellent binding properties, and, notably, does not cause oxidation degradation under an electrode environment; and an electrode and a battery which use said binder.Type: ApplicationFiled: March 3, 2015Publication date: March 9, 2017Applicant: OSAKA SODA CO., LTD.Inventors: Tomoyuki YANO, Miwa NAKAMURA, Takashi MATSUO, Yasushi MIKI, Katsuhito MIURA
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Publication number: 20160260976Abstract: Disclosed is a battery electrode binder containing a polymer including (1) a constituent unit derived from a (meth)acrylate monomer (A) having a hydroxyl group, (2) a constituent unit derived from a vinyl ester monomer (B), and (3) a constituent unit derived from a polyfunctional (meth)acrylate monomer (C). Using the binder, an electrode is produced and adopted in a battery such as a lithium ion secondary battery. Obtained are: an aqueous binder that has a low environmental impact, has high adhesiveness, and in particular does not cause oxidative degradation in the electrode environment; and a battery and electrode using the binder.Type: ApplicationFiled: October 28, 2014Publication date: September 8, 2016Applicant: OSAKA SODA CO., LTD.Inventors: Takashi MATSUO, Tomoyuki YANO, Yasushi MIKI, Katsuhito MIURA
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Publication number: 20160006075Abstract: Disclosed is a secondary battery having high capacity and excellent charge/discharge cycle characteristics, which is obtained by employing a positive electrode that is obtained by covering the surface of a positive electrode material with a polymer solid electrolyte composition using a polyether copolymer and an electrolyte salt compound that is a combination of lithium bisoxalate borate and another lithium salt compound. With respect to the positive electrode, the polymer solid electrolyte and/or the positive electrode material contains a compound that has a phenol structure wherein both of two ortho positions are substituted by a tert-butyl group.Type: ApplicationFiled: February 26, 2014Publication date: January 7, 2016Inventors: Masato TABUCHI, Katsuhito MIURA, Hajime MIYASHIRO, Yo KOBAYASHI
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Publication number: 20150372305Abstract: This binder for battery electrodes is characterized by containing a polymer including: (A) a structural unit represented by general formula (1) and derived from a monomer having a hydroxyl group (in the formula, R1 is a hydrogen or a C1-C4 straight-chain or branched alkyl group, R2 and R3 are each a hydrogen or a C1-C4 straight-chained or branched alkyl group, and n is an integer of 2-30); (B) a structural unit derived from an ethylenically unsaturated monomer having at least one functional group selected from the group consisting of a difunctional carboxylic acid group, a nitrile group and a ketone group; and (C) a structural unit derived from a polyfunctional (meth)acrylate monomer having at most five functional groups.Type: ApplicationFiled: January 24, 2014Publication date: December 24, 2015Applicant: DAISO CO., LTD.Inventors: Takashi MATSUO, Tomoyuki YANO, Yasushi MIKI, Katsuhito MIURA
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Publication number: 20150137030Abstract: The purpose of the present invention is to provide: an aqueous binder having high adhesiveness, that in particular does not exhibit oxidative degradation in an electrode environment, and having little environmental load; and an electrode and a battery that use same. Disclosed is a battery electrode binder containing: (A) a constituent unit derived from a monomer having a hydroxyl group; and (B) a constituent unit derived from a polyfunctional (meth)acrylate having no more than 5 functions. An electrode is prepared using this binder and is used in a battery such as a lithium-ion secondary battery.Type: ApplicationFiled: May 28, 2013Publication date: May 21, 2015Applicant: Daiso Co., Ltd.Inventors: Takashi Matsuo, Tomoyuki Yano, Yasushi Miki, Katsuhito Miura
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Publication number: 20110313127Abstract: Provided is a method for producing polylactic acid comprising the step of a ring-opening polymerization of lactide in the presence of an alkylaluminum compound represented by the following formula (1): R1nAlX3-n??Formula (1) (wherein n represents an integer of 1 to 3; R1 may be the same or different and independently represents a linear or branched alkyl group having 1 to 10 carbon atoms; X may be the same or different and independently represents a halogen atom or a hydrogen atom; and Al represents an aluminum atom) as a ring-opening polymerization catalyst. The ring-opening polymerization of lactide further effectively proceeds in the presence of at least one kind of metal compounds selected from the group consisting of aluminum compounds (except the alkylaluminum compounds represented by the above formula (1)), zinc compounds, titanium compounds, zirconium compounds, magnesium compounds, and calcium compounds.Type: ApplicationFiled: January 29, 2010Publication date: December 22, 2011Inventors: Naruhito Iwasa, Katsuhito Miura, Yoshiro Furukawa
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Patent number: 8026007Abstract: A polymer electrolyte composition characterized by comprising: (1) a crosslinked material of a polyether binary copolymer which has a main chain comprising repeating units represented by the formula (i) and crosslinking units represented by the formula (ii) and which has a weight-average molecular weight of 104 to 107, (2) an electrolyte solution comprising an aprotic organic solvent, (3) an additive, as an optical ingredient, which comprises an ether compound having an ethylene oxide unit, and (4) an electrolyte salt compound comprising a lithium salt compound. The composition is excellent in liquid retention and ionic conductivity, is usable in a wide temperature range, and has excellent electrochemical properties.Type: GrantFiled: June 17, 2004Date of Patent: September 27, 2011Assignee: Daiso Co., Ltd.Inventors: Katsuhito Miura, Masato Tabuchi, Shouhei Matsui, Yoshihiko Wada
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Publication number: 20070099089Abstract: A polymer electrolyte composition characterized by comprising: (1) a crosslinked material of a polyether binary copolymer which has a main chain comprising repeating units represented by the formula (i) and crosslinking units represented by the formula (ii) and which has a weight-average molecular weight of 104 to 107, (2) an electrolyte solution comprising an aprotic organic solvent, (3) an additive, as an optical ingredient, which comprises an ether compound having an ethylene oxide unit, and (4) an electrolyte salt compound comprising a lithium salt compound. The composition is excellent in liquid retention and ionic conductivity, is usable in a wide temperature range, and has excellent electrochemical properties.Type: ApplicationFiled: June 17, 2004Publication date: May 3, 2007Inventors: Katsuhito Miura, Masato Tabuchi, Shouhei Matsui, Yoshihiko Wada
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Patent number: 6878491Abstract: A polyether copolymer having a weight-average molecular weight of 104 to 107, formed from 3 to 30% by mol of a repeating unit derived from propylene oxide, 96 to 69% by mol of a repeating unit derived from ethylene oxide, and 0.01 to 15% by mol of a crosslinkable repeating unit derived from a reactive oxirane compound, gives a provide a crosslinked solid polymer electrolyte which is superior in processability, moldability, mechanical strength, flexibility and heat resistance, and has markedly improved ionic conductivity.Type: GrantFiled: October 13, 1999Date of Patent: April 12, 2005Assignee: Daiso Co., Ltd.Inventors: Katsuhito Miura, Masanori Yanagida, Hiroki Higobashi, Shouhei Matsui
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Patent number: 6858351Abstract: An electrolyte composition, which contains (1) a polymer having an ether linkage optionally having a crosslinkable functional group, (2) an additive containing an organic silicon compound having an ethylene oxide unit, and (3) an electrolyte salt compound, is excellent in mechanical properties and ionic conductivity.Type: GrantFiled: November 7, 2002Date of Patent: February 22, 2005Assignee: Daiso Co., Ltd.Inventors: Katsuhito Miura, Shouhei Matsui, Seiji Nakamura, Yoshihiko Wada
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Publication number: 20040241551Abstract: A gel electrolyte, which is obtained by gelling a polyether polymer having polyethylene oxide and/or polypropylene oxide structure in main chain, obtained from an oxirane compound and having a weight-average molecular weight of 50,000 to 1,000,000 and a crosslinking agent with a polymerization initiator and heat in the presence of an electrolyte salt compound and an aprotic organic solvent, is a high performance polymer gel electrolyte and can produce a battery, a capacitor and a photoelectric conversion element in good efficiency.Type: ApplicationFiled: March 19, 2004Publication date: December 2, 2004Inventors: Seiji Nakamura, Masato Tabuchi, Takaaki Sakai, Katsuhito Miura, Satoshi Murakami
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Patent number: 6677084Abstract: A solid polymer electrolyte containing (I) a crosslinked material obtainable by crosslinking a composition containing (i) a polyether copolymer having a weight-average molecular weight within a range from 105 to 107 and having 5 to 95 mol % of repeating unit derived from a glycidyl compound, and 95 to 5 mol % of repeating unit derived from ethylene oxide, (ii) a crosslinking agent selected from organic peroxides and azo compounds, and (iii) a crosslinking aid which is an organic compound having a carbon-carbon double bond and an imide group, (II) an electrolyte salt compound, and (III) a plasticizer, is excellent in mechanical properties and ionic conductivity.Type: GrantFiled: December 15, 2000Date of Patent: January 13, 2004Assignee: Daiso Co., Ltd.Inventors: Shouhei Matsui, Katsuhito Miura, Masato Tabuchi, Hiroki Higobashi