Patents by Inventor Shoji Shikita
Shoji Shikita 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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Nonaqueous electrolyte, capacitor device using same, and carboxylic acid ester compound used in same
Patent number: 11695158Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in the case of using an energy storage device at a high temperature and at a high voltage and further capable of inhibiting the gas generation while maintaining a capacity retention rate after storage at a high temperature and at a high voltage and also provides an energy storage device using the same. Disclosed is a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a carboxylic acid ester compound represented by the following general formula (I). In the formula, each of R1 and R2 independently represents a hydrogen atom, a —C(?O)—OR4 group, or the like, and R1 and R2 may be bonded to each other to form a ring structure. R3 represents a hydrogen atom or the like, and n represents an integer of 1 to 3.Type: GrantFiled: February 17, 2021Date of Patent: July 4, 2023Assignee: MU IONIC SOLUTIONS CORPORATIONInventors: Kei Shimamoto, Koji Abe, Shoji Shikita, Kazuhiro Miyoshi -
NONAQUEOUS ELECTROLYTE, CAPACITOR DEVICE USING SAME, AND CARBOXYLIC ACID ESTER COMPOUND USED IN SAME
Publication number: 20210320334Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in the case of using an energy storage device at a high temperature and at a high voltage and further capable of inhibiting the gas generation while maintaining a capacity retention rate after storage at a high temperature and at a high voltage and also provides an energy storage device using the same. Disclosed is a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a carboxylic acid ester compound represented by the following general formula (I). In the formula, each of R1 and R2 independently represents a hydrogen atom, a —C(?O)—OR4 group, or the like, and R1 and R2 may be bonded to each other to form a ring structure. R3 represents a hydrogen atom or the like, and n represents an integer of 1 to 3.Type: ApplicationFiled: February 17, 2021Publication date: October 14, 2021Applicant: MU IONIC SOLUTIONS CORPORATIONInventors: Kei SHIMAMOTO, Koji ABE, Shoji SHIKITA, Kazuhiro MIYOSHI -
NONAQUEOUS ELECTROLYTE, CAPACITOR DEVICE USING SAME, AND CARBOXYLIC ACID ESTER COMPOUND USED IN SAME
Publication number: 20190198928Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in the case of using an energy storage device at a high temperature and at a high voltage and further capable of inhibiting the gas generation while maintaining a capacity retention rate after storage at a high temperature and at a high voltage and also provides an energy storage device using the same. Disclosed is a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a carboxylic acid ester compound represented by the following general formula (I). In the formula, each of R1 and R2 independently represents a hydrogen atom, a —C(?O)—OR4 group, or the like, and R1 and R2 may be bonded to each other to form a ring structure. R3 represents a hydrogen atom or the like, and n represents an integer of 1 to 3.Type: ApplicationFiled: February 27, 2019Publication date: June 27, 2019Applicant: UBE INDUSTRIES, LTD.Inventors: Kei Shimamoto, Koji Abe, Shoji Shikita, Kazuhiro Miyoshi -
Nonaqueous electrolyte, capacitor device using same, and carboxylic acid ester compound used in same
Patent number: 10263285Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in the case of using an energy storage device at a high temperature and at a high voltage and further capable of inhibiting the gas generation while maintaining a capacity retention rate after storage at a high temperature and at a high voltage and also provides an energy storage device using the same. Disclosed is a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a carboxylic acid ester compound represented by the following general formula (I). In the formula, each of R1 and R2 independently represents a hydrogen atom, a —C(?O)—OR4 group, or the like, and R1 and R2 may be bonded to each other to form a ring structure. R3 represents a hydrogen atom or the like, and n represents an integer of 1 to 3.Type: GrantFiled: December 17, 2014Date of Patent: April 16, 2019Assignee: UBE INDUSTRIES, LTD.Inventors: Kei Shimamoto, Koji Abe, Shoji Shikita, Kazuhiro Miyoshi -
Patent number: 10164293Abstract: Disclosed are a non-aqueous electrolytic solution, which can improve cycle characteristics when a power storage device is used at high temperature and high voltage, and a power device using the same. The non-aqueous electrolytic solution according to the present invention comprises, in addition to a non-aqueous solvent and an electrolyte salt dissolved therein, a compound represented by the following formula (I): wherein n is an integer of 1 or 2; and when n is 1, L represents a straight or branched unsaturated hydrocarbon group of which at least one hydrogen atom is optionally substituted by a halogen atom, a cycloalkyl group of which at least one hydrogen atom is optionally substituted by a halogen atom, or an aryl group of which at least one hydrogen atom is optionally substituted by a halogen atom; and when n is 2, L represents a saturated or unsaturated divalent hydrocarbon group which optionally contains ether bond(s), or an arylene group.Type: GrantFiled: May 28, 2015Date of Patent: December 25, 2018Assignee: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kei Shimamoto, Shoji Shikita
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Patent number: 10093688Abstract: A nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, containing a compound of formula (X): where R10 and R20 are each a group selected from an alkyl having 1 to 8 carbon atoms, an alkenyl having 2 to 6 carbon atoms, an alkynyl having 3 to 6 carbon atoms, and an aryl having 6 to 12 carbon atoms, or a lithium; and X is a polar group (i) containing a —C(?O), a —P(?O), or an —S(?O)2 group, a polar group (ii) containing a —CN or an alkyl group having 1 to 6 carbon atoms, in which a part of hydrogen atoms is substituted with a fluorine atom, or a 4- to 7-membered ring polar group (iii) containing a —C(?O)—O— or a —C(?O)—N— group, where when X is a 4- to 7-membered ring polar group (iii) containing —C(?O)—N—, at least one of R10 and R20 is lithium.Type: GrantFiled: May 19, 2015Date of Patent: October 9, 2018Assignee: UBE INDUSTRIES, LTD.Inventors: Yuichi Kotou, Tatsuo Fujino, Kei Shimamoto, Shuichi Koso, Shoji Shikita, Yosuke Sato, Junichi Chika
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NONAQUEOUS ELECTROLYTE, CAPACITOR DEVICE USING SAME, AND CARBOXYLIC ACID ESTER COMPOUND USED IN SAME
Publication number: 20180166746Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in the case of using an energy storage device at a high temperature and at a high voltage and further capable of inhibiting the gas generation while maintaining a capacity retention rate after storage at a high temperature and at a high voltage and also provides an energy storage device using the same. Disclosed is a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a carboxylic acid ester compound represented by the following general formula (I). In the formula, each of R1 and R2 independently represents a hydrogen atom, a —C(?O)—OR4 group, or the like, and R1 and R2 may be bonded to each other to form a ring structure. R3 represents a hydrogen atom or the like, and n represents an integer of 1 to 3.Type: ApplicationFiled: December 17, 2014Publication date: June 14, 2018Applicant: UBE INDUSTRIES, LTD.Inventors: Kei SHIMAMOTO, Koji ABE, Shoji SHIKITA, Kazuhiro MIYOSHI -
Patent number: 9934911Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in a broad temperature range and an energy storage device using the same. [1] A nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing, as an additive, an SO4 group-containing compound having a specified structure and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous electrolytic solution contains, as an additive, 0.001% by mass or more and less than 5% by mass of an SO4 group-containing compound having a specified structure in the nonaqueous electrolytic solution, are disclosed.Type: GrantFiled: March 31, 2014Date of Patent: April 3, 2018Assignee: UBE INDUSTRIES, LTD.Inventors: Kei Shimamoto, Koji Abe, Yuichi Kotou, Shoji Shikita
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Publication number: 20170275311Abstract: The present invention is concerned with a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a compound represented by the following general formula (X), in which a polar group (X) is bound to a phosphorus atom (P), and capable of improving electrochemical characteristics in a broad temperature range; an energy storage device using the same; and a novel compound.Type: ApplicationFiled: May 19, 2015Publication date: September 28, 2017Applicant: Ube Industries, Ltd.Inventors: Yuichi KOTOU, Tatsuo FUJINO, Kei SHIMAMOTO, Shuichi KOSO, Shoji SHIKITA, Yosuke SATO, Junichi CHIKA
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Publication number: 20170271091Abstract: A nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a lithium salt having a specific ?,?-dihydroxy carboxylic acid ester structure, phosphono hydroxy carboxylic acid structure, alkoxycarbonyl hydroxy carboxylic acid structure, or formyloxy structure; an energy storage device using the nonaqueous electrolytic solution; and a lithium salt used for the nonaqueous electrolytic solution. This nonaqueous electrolytic solution makes it possible not only to improve the electrochemical characteristics when the energy storage device is used at a high temperature and a high voltage and to improve the capacity retention rate after high-voltage and high-temperature storage, but also to suppress gas generation.Type: ApplicationFiled: May 13, 2015Publication date: September 21, 2017Applicant: UBE INDUSTRIES, LTD.Inventors: Koji ABE, Shoji SHIKITA, Junichi CHIKA, Kei SHIMAMOTO, Yosuke SATO
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Publication number: 20170194664Abstract: Disclosed are a non-aqueous electrolytic solution, which can improve cycle characteristics when a power storage device is used at high temperature and high voltage, and a power device using the same. The non-aqueous electrolytic solution according to the present invention comprises, in addition to a non-aqueous solvent and an electrolyte salt dissolved therein, a compound represented by the following formula (I): wherein n is an integer of 1 or 2; and when n is 1, L represents a straight or branched unsaturated hydrocarbon group of which at least one hydrogen atom is optionally substituted by a halogen atom, a cycloalkyl group of which at least one hydrogen atom is optionally substituted by a halogen atom, or an aryl group of which at least one hydrogen atom is optionally substituted by a halogen atom; and when n is 2, L represents a saturated or unsaturated divalent hydrocarbon group which optionally contains ether bond(s), or an arylene group.Type: ApplicationFiled: May 28, 2015Publication date: July 6, 2017Inventors: Koji ABE, Kei SHIMAMOTO, Shoji SHIKITA
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Publication number: 20170162915Abstract: Provided are a high-purity vinylene carbonate that is a vinylene carbonate having the content of chlorine impurities of substantially zero as detected by the Wickbold combustion-ion chromatography method and having a Hazen unit color number of 10 or less in a nitrogen atmosphere, a nonaqueous electrolytic solution containing the high-purity vinylene carbonate, and an energy storage device using the same.Type: ApplicationFiled: June 23, 2015Publication date: June 8, 2017Applicant: UBE INDUSTRIES, LTD.Inventors: Koji ABE, Akikazu ITO, Shoji SHIKITA
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Patent number: 9608287Abstract: An object of the present invention is to provide a nonaqueous electrolytic solution capable of improving electrochemical characteristics in a broad temperature range, an energy storage device using it. A nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, which comprises at least one cyclic sulfonic acid ester compound represented by the following general formula (I), and an energy storage device.Type: GrantFiled: April 25, 2012Date of Patent: March 28, 2017Assignee: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Shoji Shikita
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Patent number: 9595737Abstract: The present invention includes [1] a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution and being capable of improving electrochemical characteristics in a broad temperature range; and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution.Type: GrantFiled: May 13, 2013Date of Patent: March 14, 2017Assignee: UBE INDUSTRIES, LTD.Inventors: Kei Shimamoto, Yuichi Kotou, Shoji Shikita
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Publication number: 20160027592Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in a broad temperature range and an energy storage device using the same. [1] A nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing, as an additive, an SO4 group-containing compound having a specified structure and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous electrolytic solution contains, as an additive, 0.001% by mass or more and less than 5% by mass of an SO4 group-containing compound having a specified structure in the nonaqueous electrolytic solution, are disclosed.Type: ApplicationFiled: March 31, 2014Publication date: January 28, 2016Applicant: UBE INDUSTRIES, LTD.Inventors: Kei SHIMAMOTO, Koji ABE, Yuichi KOTOU, Shoji SHIKITA
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Patent number: 9240614Abstract: The present invention provides a nonaqueous electrolytic solution which can improve the electrochemical characteristics in a broad temperature range, an electrochemical element produced by using the same and a sulfonic ester compound having a branched structure which is used for the same. The present invention relates to a nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent, which comprises a sulfonic ester compound represented by the following Formula (I) in an amount of 0.Type: GrantFiled: June 3, 2011Date of Patent: January 19, 2016Assignee: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Kazuhiro Miyoshi, Shoji Shikita, Kei Shimamoto
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Publication number: 20150372349Abstract: The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in the case of using an energy storage device at a high temperature and further capable of inhibiting the gas generation as well as a capacity retention rate after a high-temperature cycle, and also to provide an energy storage device using the same. Disclosed are a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing a phenyl ester compound represented by the following general formula (I), and an energy storage device. (In the formula, Rf represents a fluoroalkyl group having 1 to 6 carbon atoms; X represents a halogen atom; each of p and q is an integer of 1 to 4; and (p+q) is 5 or less. A has a structure represented by —S(?O)2—, —C(?O)—, —C(?O)—O—, —C(?O)-L1-C(?O)—, —C(?O)-L2-P(?O)(OR)—O—, or —P(?O)(OR)—O—.Type: ApplicationFiled: January 20, 2014Publication date: December 24, 2015Applicant: UBE INDUSTRIES, LTD.Inventor: Shoji SHIKITA
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Patent number: 9203113Abstract: An object of the present invention is to provide a nonaqueous electrolytic solution capable of improving low-temperature load characteristics after high temperature charging storage, an electrochemical element using it, and a 1,2-dioxypropane compound used for it. The nonaqueous electrolytic solution of the present invention comprises an electrolyte salt dissolved in a nonaqueous solvent, and contains a 1,2-dioxypropane compound represented by the above-mentioned general formula (I). (wherein R1 and R2 each represent a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms; X1 represents a group selected from —S(?O)—, —S(?O)2—, —C(?O)—, —CR3R4—, —P(?O)(OR5)— and —SiR6R7—; R3 and R4 each represent a hydrogen atom, or an alkyl group having from 1 to 6 carbon atoms; R5 to R7 each represent an alkyl group having from 1 to 6 carbon atoms.Type: GrantFiled: March 24, 2011Date of Patent: December 1, 2015Assignee: UBE INDUSTRIES, LTD.Inventors: Kazuhiro Miyoshi, Yuichi Kotou, Shoji Shikita
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Patent number: 9130244Abstract: A nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, which contains a carboxylate represented by the following general formula (8) in an amount of from 0.01 to 5% by mass of the nonaqueous electrolytic solution: wherein X31 represents -A2-C?Y2, -A2-C(?O)O-A3-C?Y2 or -A2-C(?O)O-A4; A1, A2 and A3 each independently represent an alkylene group having from 1 to 6 carbon atoms; A4 represents an alkyl group having from 1 to 6 carbon atoms; Y1 and Y2 each independently represent CH or N.Type: GrantFiled: September 14, 2010Date of Patent: September 8, 2015Assignee: UBE INDUSTRIES, LTD.Inventors: Koji Abe, Shoji Shikita, Kazuyuki Kawabe, Masahide Kondo, Tatsuo Fujino
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Publication number: 20150125761Abstract: The present invention includes [1] a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution and being capable of improving electrochemical characteristics in a broad temperature range; and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution.Type: ApplicationFiled: May 13, 2013Publication date: May 7, 2015Applicant: UBE INDUSTRIES, LTD.Inventors: Kei Shimamoto, Yuichi Kotou, Shoji Shikita