Patents by Inventor Aya UCHIDA
Aya UCHIDA 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: 11912905Abstract: The present invention aims to provide an adhesive tape capable of exhibiting excellent adhesion to rough surfaces. The present invention also aims to provide a method for fixing an electronic device component or an in-vehicle device component using the adhesive tape and a method for producing an electronic device or an in-vehicle device. Provided is an adhesive tape including an adhesive layer containing an acrylic copolymer, the acrylic copolymer containing 30% by weight or more of a structural unit derived from n-heptyl (meth)acrylate and 0.01% by weight or more and 30% by weight or less of a structural unit derived from 1-methylheptyl (meth)acrylate.Type: GrantFiled: March 22, 2022Date of Patent: February 27, 2024Assignee: SEKISUI CHEMICAL CO., LTD.Inventors: Aya Adachi, Yudai Ogata, Noriyuki Uchida, Yoshito Arai
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Publication number: 20230361267Abstract: To provide a positive electrode active material with which the cycle performance of a secondary battery can be improved and a manufacturing method thereof. When a secondary battery is fabricated using, for a positive electrode, a positive electrode active material obtained by depositing a solid electrolyte on a lithium compound with the use of a graphene compound by spray-drying treatment and volatilizing carbon from the graphene compound by heat treatment, the decomposition of an electrolyte solution in contact with the positive electrode active material can be inhibited, contributing to improvement in the cycle performance of the secondary battery.Type: ApplicationFiled: July 13, 2023Publication date: November 9, 2023Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yohei Momma, Mayumi MIKAMI, Aya UCHIDA, Kazuhito MACHIKAWA
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Patent number: 11799080Abstract: A positive electrode active material having high capacity and excellent cycle performance is provided. The positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charge and discharge as compared with those of a known positive electrode active material.Type: GrantFiled: May 11, 2018Date of Patent: October 24, 2023Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mayumi Mikami, Aya Uchida, Yumiko Yoneda, Yohei Momma, Masahiro Takahashi, Teruaki Ochiai
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Patent number: 11777089Abstract: A positive electrode active material having high capacity and excellent cycle performance is provided. The positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charge and discharge as compared with those of a known positive electrode active material.Type: GrantFiled: April 26, 2022Date of Patent: October 3, 2023Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mayumi Mikami, Aya Uchida, Yumiko Yoneda, Yohei Momma, Masahiro Takahashi, Teruaki Ochiai
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Patent number: 11735736Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.Type: GrantFiled: October 14, 2021Date of Patent: August 22, 2023Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Kai Kimura, Kazutaka Kuriki, Teppei Oguni, Aya Uchida
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Patent number: 11616231Abstract: A positive electrode active material having high capacity and excellent cycle performance is provided. The positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charge and discharge as compared with those of a known positive electrode active material.Type: GrantFiled: May 23, 2022Date of Patent: March 28, 2023Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Mayumi Mikami, Aya Uchida, Yumiko Yoneda, Yohei Momma, Masahiro Takahashi, Teruaki Ochiai
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Publication number: 20220285681Abstract: A positive electrode active material having high capacity and excellent cycle performance is provided. The positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charge and discharge as compared with those of a known positive electrode active material.Type: ApplicationFiled: May 23, 2022Publication date: September 8, 2022Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Mayumi MIKAMI, Aya UCHIDA, Yumiko YONEDA, Yohei MOMMA, Masahiro TAKAHASHI, Teruaki OCHIAI
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Publication number: 20220255076Abstract: A positive electrode active material having high capacity and excellent cycle performance is provided. The positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charge and discharge as compared with those of a known positive electrode active material.Type: ApplicationFiled: April 26, 2022Publication date: August 11, 2022Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Mayumi MIKAMI, Aya UCHIDA, Yumiko YONEDA, Yohei MOMMA, Masahiro TAKAHASHI, Teruaki OCHIAI
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Publication number: 20220037666Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.Type: ApplicationFiled: October 14, 2021Publication date: February 3, 2022Inventors: Kai Kimura, Kazutaka Kuriki, Teppei Oguni, Aya Uchida
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Patent number: 11152622Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.Type: GrantFiled: December 27, 2019Date of Patent: October 19, 2021Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kai Kimura, Kazutaka Kuriki, Teppei Oguni, Aya Uchida
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Publication number: 20210104744Abstract: Provided is a layer for preventing a short circuit between a positive electrode and a negative electrode in a solid battery using a layer containing a solid electrolyte. As the solid electrolyte between the positive electrode and the negative electrode, a layer containing a graphene compound is used. Lithium ions can pass through the layer containing the graphene compound. Lithium ions are added in advance in the layer containing the graphene compound. Specifically, a modifier is used, and a graphene compound chemically modified with a functional group such as ether and ester with an increased interlayer distance is used.Type: ApplicationFiled: December 4, 2017Publication date: April 8, 2021Inventors: Teppei OGUNI, Aya UCHIDA, Hiroshi KADOMA
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Publication number: 20210083281Abstract: A positive electrode active material having high capacity and excellent cycle performance is provided. The positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charge and discharge as compared with those of a known positive electrode active material.Type: ApplicationFiled: May 11, 2018Publication date: March 18, 2021Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventors: Mayumi MIKAMI, Aya UCHIDA, Yumiko YONEDA, Yohei MOMMA, Masahiro TAKAHASHI, Teruaki OCHIAI
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Publication number: 20200152961Abstract: To provide a positive electrode active material with which the cycle performance of a secondary battery can be improved and a manufacturing method thereof. When a secondary battery is fabricated using, for a positive electrode, a positive electrode active material obtained by depositing a solid electrolyte on a lithium compound with the use of a graphene compound by spray-drying treatment and volatilizing carbon from the graphene compound by heat treatment, the decomposition of an electrolyte solution in contact with the positive electrode active material can be inhibited, contributing to improvement in the cycle performance of the secondary battery.Type: ApplicationFiled: April 19, 2018Publication date: May 14, 2020Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yohei MOMMA, Mayumi MIKAMI, Aya UCHIDA, Kazuhito MACHIKAWA
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Publication number: 20200144621Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S[m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.Type: ApplicationFiled: December 27, 2019Publication date: May 7, 2020Inventors: Kai KIMURA, Kazutaka Costellia KURIKI, Teppei OGUNI, Aya UCHIDA (Forme: HITOTSUYANAGI)
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Patent number: 10529990Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.Type: GrantFiled: August 4, 2017Date of Patent: January 7, 2020Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kai Kimura, Kazutaka Kuriki, Teppei Oguni, Aya Uchida
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Patent number: 10497979Abstract: A power storage device with high capacity is provided. Alternatively, a power storage device with high energy density is provided. Alternatively, a highly reliable power storage device is provided. Alternatively, a long-life power storage device is provided. A power storage device is characterized by comprising a separator, a first electrode, a second electrode, an electrolytic solution, in which the separator is provided between the first electrode and the second electrode, the first electrode includes an active material layer and a current collector, the first electrode includes a pair of coating films between which the current collector is sandwiched, the active material layer includes a region in contact with the current collector, the active material layer includes a region in contact with at least one of the pair of coating films, and the electrolytic solution includes an alkali metal salt and an ionic liquid.Type: GrantFiled: September 30, 2015Date of Patent: December 3, 2019Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Jun Ishikawa, Kazuhei Narita, Teppei Oguni, Aya Uchida
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Patent number: 10158108Abstract: When cellulose is used as a separator, the cellulose is impregnated with an ionic liquid. Charge and discharge are repeated with this separator touching a surface of a current collector; then, the separator is changed in color. Thus, it is an object to provide a power storage device with a structure in which a side reaction other than a battery reaction, e.g., a change in color of separator, is unlikely to occur. In the power storage device, a separator impregnated with an ionic liquid is not in contact with a surface of a current collector. The separator has a tubular shape, a bag-like shape, or a sheet-like shape. The separator includes cellulose. The power storage device including the ionic liquid is non-volatile and non-flammable. The power storage device can be bent.Type: GrantFiled: October 21, 2015Date of Patent: December 18, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Kazuhei Narita, Jun Ishikawa, Teppei Oguni, Aya Uchida
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Patent number: 10147556Abstract: A power storage device with high capacity, a power storage device with high energy density, a highly reliable power storage device, and a long-life power storage device are provided. The power storage device includes a positive electrode, a separator, a negative electrode, and an electrolytic solution. The electrolytic solution contains an alkali metal salt and an ionic liquid. The separator is located between the positive electrode and the negative electrode. At least part of the positive electrode overlaps with the negative electrode. At least part of an end portion of the negative electrode is located inside a region between end portions of the positive electrode.Type: GrantFiled: March 17, 2015Date of Patent: December 4, 2018Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Aya Uchida, Teppei Oguni, Rie Yokoi, Jun Ishikawa
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Publication number: 20180233780Abstract: A power storage device with high capacity is provided. Alternatively, a power storage device with high energy density is provided. Alternatively, a highly reliable power storage device is provided. Alternatively, a long-life power storage device is provided. A power storage device is characterized by comprising a separator, a first electrode, a second electrode, an electrolytic solution, in which the separator is provided between the first electrode and the second electrode, the first electrode includes an active material layer and a current collector, the first electrode includes a pair of coating films between which the current collector is sandwiched, the active material layer includes a region in contact with the current collector, the active material layer includes a region in contact with at least one of the pair of coating films, and the electrolytic solution includes an alkali metal salt and an ionic liquid.Type: ApplicationFiled: September 30, 2015Publication date: August 16, 2018Inventors: Jun ISHIKAWA, Kazuhei NARITA, Teppei OGUNI, Aya UCHIDA
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Publication number: 20170338491Abstract: A power storage device with high capacity or high energy density is provided. A highly reliable power storage device is provided. A long-life power storage device is provided. An electrode includes an active material, a first binder, and a second binder. The specific surface area of the active material is S [m2/g]. The weight of the active material, the weight of the first binder, and the weight of the second binder are a, b, and c, respectively. The solution of {(b+c)/(a+b+c)}×100÷S is 0.3 or more. The electrode includes a first film in contact with the active material. The first film preferably includes a region in contact with the active material. The first film preferably includes a region with a thickness of 2 nm or more and 20 nm or less. The first film contains a water-soluble polymer.Type: ApplicationFiled: August 4, 2017Publication date: November 23, 2017Inventors: Kai KIMURA, Kazutaka KURIKI, Teppei OGUNI, Aya UCHIDA (Forme: HITOTSUYANAGI)