Patents by Inventor Toru Itakura
Toru Itakura 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: 11104293Abstract: An airbag device includes an airbag main body formed in a bag shape, and a case body in which the airbag main body folded is stored. The airbag main body includes a first folded part including an opening for gas introduction provided in a base end portion of the first folded part, and multiple second folded parts connected to a distal end portion of the first folded part. The airbag main body folded is stored in the case body such that a connecting part among the first folded part and the second folded parts faces a door part of the case body.Type: GrantFiled: February 7, 2019Date of Patent: August 31, 2021Assignee: NIHON PLAST CO., LTD.Inventors: Toru Itakura, Kei Sano
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Publication number: 20210253058Abstract: An airbag device includes an airbag main body formed in a bag shape, and a case body in which the airbag main body folded is stored. The airbag main body includes a first folded part including an opening for gas introduction provided in a base end portion of the first folded part, and multiple second folded parts connected to a distal end portion of the first folded part. The airbag main body folded is stored in the case body such that a connecting part among the first folded part and the second folded parts faces a door part of the case body.Type: ApplicationFiled: February 7, 2019Publication date: August 19, 2021Inventors: Toru ITAKURA, Kei SANO
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Patent number: 10991984Abstract: A nonaqueous electrolyte of the present invention includes an ionic liquid including a first alicyclic quaternary ammonium cation having one or more substituents, a second alicyclic quaternary ammonium cation having an alicyclic skeleton that is the same as an alicyclic skeleton of the first alicyclic quaternary ammonium cation, and a counter anion to the first alicyclic quaternary ammonium cation and the second alicyclic quaternary ammonium cation and an alkali metal salt. In the second alicyclic quaternary ammonium cation, one of substituents bonded to a nitrogen atom in the alicyclic skeleton is a substituent including a halogen element. In the ionic liquid, the amount of a salt including the second alicyclic quaternary ammonium cation is less than or equal to 1 wt % per unit weight of the ionic liquid, or is less than or equal to 0.8 wt % per unit weight of the nonaqueous electrolyte.Type: GrantFiled: January 28, 2016Date of Patent: April 27, 2021Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Toru Itakura, Kyosuke Ito, Rie Yokoi, Jun Ishikawa
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Publication number: 20200254958Abstract: An airbag device includes an airbag main body formed in a bag shape, and a case body in which the airbag main body folded is stored. The airbag main body includes a first folded part including an opening for gas introduction provided in a base end portion of the first folded part, and multiple second folded parts connected to a distal end portion of the first folded part. The airbag main body folded is stored in the case body such that a connecting part among the first folded part and the second folded parts faces a door part of the case body.Type: ApplicationFiled: February 7, 2019Publication date: August 13, 2020Inventors: Toru ITAKURA, Kei SANO
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Patent number: 10128541Abstract: A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution. In the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %. The R value refers to a ratio of a peak intensity I1360 to a peak intensity I1580 (I1360/I1580). The peak intensity I1360 and the peak intensity I1580 are observed by Raman spectrometry at a Raman shift of 1360 cm?1 and a Raman shift of 1580 cm?1, respectively. The electrolyte solution contains a lithium ion and an ionic liquid composed of an organic cation and an anion.Type: GrantFiled: October 25, 2017Date of Patent: November 13, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Toru Itakura, Kyosuke Ito, Jun Ishikawa, Rie Yokoi
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Patent number: 10049825Abstract: To provide an ionic liquid which has at least one of properties such as high ionic conductivity, a small reduction in ionic conductivity at a low temperature, a low melting point, and a low viscosity. To provide a power storage device having higher initial charge and discharge efficiency than a power storage device containing a conventional ionic liquid. A cyclic quaternary ammonium salt is liquid at room temperature and contains a quaternary spiro ammonium cation having an asymmetrical structure including two aliphatic rings and one or more substituents bonded to one or both of the two aliphatic rings and an anion corresponding to the quaternary spiro ammonium cation. The power storage device includes a positive electrode, a negative electrode, and a nonaqueous electrolyte containing the cyclic quaternary ammonium salt as a nonaqueous solvent.Type: GrantFiled: April 17, 2013Date of Patent: August 14, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kyosuke Ito, Toru Itakura, Rie Yokoi, Jun Ishikawa
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Patent number: 9997806Abstract: An ionic liquid having high electrochemical stability and a low melting point. An ionic liquid represented by the following general formula (G0) is provided. In the general formula (G0), R0 to R5 are individually any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, a methoxyethyl group, and a hydrogen atom, and A? is a univalent imide-based anion, a univalent methide-based anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate, or hexafluorophosphate.Type: GrantFiled: February 23, 2017Date of Patent: June 12, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kyosuke Ito, Toru Itakura
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Publication number: 20180048027Abstract: A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution. In the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %. The R value refers to a ratio of a peak intensity I1360 to a peak intensity I1580 (I1360/I1580). The peak intensity I1360 and the peak intensity I1580 are observed by Raman spectrometry at a Raman shift of 1360 cm?1 and a Raman shift of 1580 cm?1, respectively. The electrolyte solution contains a lithium ion and an ionic liquid composed of an organic cation and an anion.Type: ApplicationFiled: October 25, 2017Publication date: February 15, 2018Inventors: Toru ITAKURA, Kyosuke ITO, Jun ISHIKAWA, Rie YOKOI
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Patent number: 9847555Abstract: A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution. In the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %. The R value refers to a ratio of a peak intensity I1360 to a peak intensity I1580 (I1360/I1580). The peak intensity I1360 and the peak intensity I1580 are observed by Raman spectrometry at a Raman shift of 1360 cm?1 and a Raman shift of 1580 cm?1, respectively. The electrolyte solution contains a lithium ion and an ionic liquid composed of an organic cation and an anion.Type: GrantFiled: April 3, 2017Date of Patent: December 19, 2017Assignee: Semiconductor Energy Laboratory Co., LTD.Inventors: Toru Itakura, Kyosuke Ito, Jun Ishikawa, Rie Yokoi
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Publication number: 20170229739Abstract: An ionic liquid having high electrochemical stability and a low melting point. An ionic liquid represented by the following general formula (G0) is provided. In the general formula (G0), R0 to R5 are individually any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, a methoxyethyl group, and a hydrogen atom, and A? is a univalent imide-based anion, a univalent methide-based anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate, or hexafluorophosphate.Type: ApplicationFiled: February 23, 2017Publication date: August 10, 2017Inventors: Kyosuke ITO, Toru ITAKURA
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Publication number: 20170207487Abstract: A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution, in the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %, The R value refers to a ratio of a peak intensity I1360 to a peak intensity I1580 (I1360/I1580). The peak intensity I1360 and the peak intensity I1580 are observed by Raman spectrometry at a Raman shift of 1360 cm?1 and a Raman shift of 1580 cm?1, respectively. The electrolyte solution contains a lithium ion and an ionic liquid composed of an organic cation and an anion.Type: ApplicationFiled: April 3, 2017Publication date: July 20, 2017Inventors: Toru ITAKURA, Kyosuke ITO, Jun ISHIKAWA, Rie YOKOI
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Patent number: 9620820Abstract: A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution. In the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %. The R value refers to a ratio of a peak intensity I1360 to a peak intensity I1580 (I1360/I1580). The peak intensity I1360 and the peak intensity I1580 are observed by Raman spectrometry at a Raman shift of 1360 cm?1 and a Raman shift of 1580 cm?1, respectively. The electrolyte solution contains a lithium ion and an ionic liquid composed of an organic cation and an anion.Type: GrantFiled: May 27, 2016Date of Patent: April 11, 2017Assignee: Semiconductor Energy Laboratory Co., LTD.Inventors: Toru Itakura, Kyosuke Ito, Jun Ishikawa, Rie Yokoi
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Patent number: 9583276Abstract: An ionic liquid having high electrochemical stability and a low melting point. An ionic liquid represented by the following general formula (G0) is provided. In the general formula (G0), R0 to R5 are individually any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, a methoxyethyl group, and a hydrogen atom, and A? is a univalent imide-based anion, a univalent methide-based anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate, or hexafluorophosphate.Type: GrantFiled: October 21, 2015Date of Patent: February 28, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kyosuke Ito, Toru Itakura
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Patent number: 9577290Abstract: A power storage device using an organic solvent as a nonaqueous solvent for a nonaqueous electrolyte, in which a CV charging period in CCCV charging can be prevented from being extended and which has high performance, can be provided. The power storage device includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The nonaqueous electrolyte includes an ionic liquid including an alicyclic quaternary ammonium cation having one or more substituents and a counter anion to the alicyclic quaternary ammonium cation, a cyclic ester, and an alkali metal salt. In particular, in the power storage device, the ionic liquid content is greater than or equal to 70 wt % and less than 100 wt % per unit weight of the ionic liquid and the cyclic ester in the nonaqueous electrolyte, or greater than or equal to 50 wt % and less than 80 wt % per unit weight of the nonaqueous electrolyte.Type: GrantFiled: December 19, 2012Date of Patent: February 21, 2017Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Kyosuke Ito, Toru Itakura, Nobuhiro Inoue, Jun Ishikawa, Junpei Momo
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Publication number: 20170040642Abstract: One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device. A room-temperature ionic liquid which includes a cyclic quaternary ammonium cation represented by a general formula (G1) below is used for an electrolyte of a power storage device. In the general formula (G1), one or two of R1 to R5 are any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, and a methoxyethyl group. The other three or four of R1 to R5 are hydrogen atoms. A? is a univalent imide anion, a univalent methide anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate (BF4?), or hexafluorophosphate (PF6?).Type: ApplicationFiled: October 18, 2016Publication date: February 9, 2017Inventors: Kyosuke ITO, Toru ITAKURA
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Patent number: 9478368Abstract: One object is to provide a power storage device including an electrolyte using a room-temperature ionic liquid which includes a univalent anion and a cyclic quaternary ammonium cation having excellent reduction resistance. Another object is to provide a high-performance power storage device. A room-temperature ionic liquid which includes a cyclic quaternary ammonium cation represented by a general formula (G1) below is used for an electrolyte of a power storage device. In the general formula (G1), one or two of R1 to R5 are any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, and a methoxyethyl group. The other three or four of R1 to R5 are hydrogen atoms. A? is a univalent imide anion, a univalent methide anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate (BF4?), or hexafluorophosphate (PF6?).Type: GrantFiled: August 4, 2014Date of Patent: October 25, 2016Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kyosuke Ito, Toru Itakura
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Publication number: 20160276710Abstract: A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution. In the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %. The R value refers to a ratio of a peak intensity I1360 to a peak intensity I1580 (I1360/I1580). The peak intensity I1360 and the peak intensity I1580 are observed by Raman spectrometry at a Raman shift of 1360 cm?1 and a Raman shift of 1580 cm?1, respectively. The electrolyte solution contains a lithium ion and an ionic liquid composed of an organic cation and an anion.Type: ApplicationFiled: May 27, 2016Publication date: September 22, 2016Inventors: Toru ITAKURA, Kyosuke ITO, Jun ISHIKAWA, Rie YOKOI
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Patent number: 9362564Abstract: A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution. In the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %. The R value refers to a ratio of a peak intensity I1360 to a peak intensity I1580 (I1360/I1580). The peak intensity I1360 and the peak intensity I1580 are observed by Raman spectrometry at a Raman shift of 1360 cm?1 and a Raman shift of 1580 cm?1, respectively. The electrolyte solution contains a lithium ion and an ionic liquid composed of an organic cation and an anion.Type: GrantFiled: October 4, 2013Date of Patent: June 7, 2016Assignee: Semiconductor Energy Laboratory Co., LTD.Inventors: Toru Itakura, Kyosuke Ito, Jun Ishikawa, Rie Yokoi
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Publication number: 20160141719Abstract: A nonaqueous electrolyte of the present invention includes an ionic liquid including a first alicyclic quaternary ammonium cation having one or more substituents, a second alicyclic quaternary ammonium cation having an alicyclic skeleton that is the same as an alicyclic skeleton of the first alicyclic quaternary ammonium cation, and a counter anion to the first alicyclic quaternary ammonium cation and the second alicyclic quaternary ammonium cation and an alkali metal salt. In the second alicyclic quaternary ammonium cation, one of substituents bonded to a nitrogen atom in the alicyclic skeleton is a substituent including a halogen element. In the ionic liquid, the amount of a salt including the second alicyclic quaternary ammonium cation is less than or equal to 1 wt % per unit weight of the ionic liquid, or is less than or equal to 0.8 wt % per unit weight of the nonaqueous electrolyte.Type: ApplicationFiled: January 28, 2016Publication date: May 19, 2016Inventors: Toru ITAKURA, Kyosuke ITO, Rie YOKOI (Former MATSUBARA), Jun ISHIKAWA
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Publication number: 20160042876Abstract: An ionic liquid having high electrochemical stability and a low melting point. An ionic liquid represented by the following general formula (G0) is provided. In the general formula (G0), R0 to R5 are individually any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, a methoxyethyl group, and a hydrogen atom, and A? is a univalent imide-based anion, a univalent methide-based anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate, or hexafluorophosphate.Type: ApplicationFiled: October 21, 2015Publication date: February 11, 2016Inventors: Kyosuke ITO, Toru ITAKURA