Patents by Inventor Yuki Shibano
Yuki Shibano 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: 11961968Abstract: The present invention provides a lithium ion secondary battery which is provided with: a nonaqueous electrolyte solution; and a positive electrode and a negative electrode, each of which is capable of absorbing and desorbing lithium. This lithium ion secondary battery is configured such that the nonaqueous electrolyte solution contains (A) an electrolyte, (B) a nonaqueous organic solvent and (C) a compound that is obtained by substituting at least one hydrogen atom, which is bonded to a carbon atom in an aromatic ring of a compound that has at least one aromatic ring and no amino group, by a group that is represented by formula (1); and this lithium ion secondary battery is charged at a voltage within the range of 4.35-5 V for use.Type: GrantFiled: March 28, 2019Date of Patent: April 16, 2024Assignee: NISSAN CHEMICAL CORPORATIONInventor: Yuki Shibano
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Publication number: 20230296461Abstract: A pressure sensor includes a first electrode, a plurality of cavities, and a second electrode. The second electrode is disposed opposite the first electrode through the plurality of cavities. The second electrode includes a flat structure spanning two adjacent cavities of the plurality of cavities.Type: ApplicationFiled: February 23, 2023Publication date: September 21, 2023Inventors: Yoshitaka Sasaki, Jotaro Akiyama, Sal Akram, Yaoching Wang, Weng Shen Su, Tsung Lin Tang, Ting-Yuan Liu, Yuki Shibano, Chung-Hsien Lin
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Publication number: 20220393237Abstract: The present invention provides a polymer which contains a repeating unit represented by formula (1).Type: ApplicationFiled: September 29, 2020Publication date: December 8, 2022Applicant: NISSAN CHEMICAL CORPORATIONInventor: Yuki SHIBANO
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Patent number: 11326010Abstract: Provided is an agent for dispersing an electrically conductive carbon material, in which the agent consists of a polymer which has an oxazoline group in a side chain and which is obtained by using an oxazoline group-containing monomer such as that represented by formula (1) for example, and in which the agent exhibits excellent dispersion of an electrically conductive carbon material and produces a thin film that exhibits excellent adhesion to a current collection substrate when formed into a thin film together with the electrically conductive carbon material. (In the formula, X denotes a polymerizable carbon-carbon double bond-containing group, and R1-R4 each independently denote a hydrogen atom, a halogen atom, an alkyl group optionally having a branched structure having 1-5 carbon atoms, an aryl group having 6-20 carbon atoms, or an aralkyl group having 7-20 carbon atoms.Type: GrantFiled: March 20, 2019Date of Patent: May 10, 2022Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Tatsuya Hatanaka, Yuki Shibano, Takuji Yoshimoto
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Patent number: 11251435Abstract: This undercoat foil for an energy storage device electrode comprises a collector base plate, and an undercoat layer formed on at least one surface of the collector base plate, the undercoat layer containing carbon nanotubes, and the coating amount per collector base plate surface being 0.1 g/m2 or less. Since this undercoat foil can be effectively welded by ultrasound, the use thereof allows a low-resistance energy storage device and a simple and effective production method therefor to be provided.Type: GrantFiled: May 26, 2016Date of Patent: February 15, 2022Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yuki Shibano, Tatsuya Hatanaka, Takuji Yoshimoto
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Publication number: 20210384489Abstract: Provided is a composition for forming an active material composite that gives an active material composite that can be used for an electrode in a lithium ion secondary battery and the like and that can improve battery cycle and rate characteristics. A composition for forming an active material composite comprising at least one active material selected from a metal, a metalloid, a metal alloy, a metal oxide, a metalloid oxide, a metal phosphate, a metal sulfide, and a metal nitride, a conductive material, a solvent, and at least one dispersant selected from a vinyl polymer comprising a pendant oxazoline group and a triarylamine-based hyperbranched polymer.Type: ApplicationFiled: October 3, 2019Publication date: December 9, 2021Applicant: NISSAN CHEMICAL CORPORATIONInventors: Takahiro KASEYAMA, Tatsuya HATANAKA, Yuki SHIBANO
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Publication number: 20210151797Abstract: The present invention provides: an additive for nonaqueous electrolyte solutions, which is composed of a compound that has at least one aromatic ring and no amino group, while having at least one hydrogen atom that is bonded to a carbon atom in an aromatic ring of the compound substituted by a group that is represented by formula (1); and a lithium ion secondary battery which uses this additive for nonaqueous electrolyte solutions. (In the formula, Rx represents an optionally substituted monovalent aliphatic hydrocarbon group having 1-60 carbon atoms, an optionally substituted monovalent aromatic hydrocarbon group having 6-60 carbon atoms, or an optionally substituted monovalent heterocyclic ring-containing group having 2-60 carbon atoms; and the broken line represents a bonding hand.Type: ApplicationFiled: March 28, 2019Publication date: May 20, 2021Applicant: NISSAN CHEMICAL CORPORATIONInventor: Yuki SHIBANO
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Publication number: 20210036372Abstract: The present invention provides a lithium ion secondary battery which is provided with: a nonaqueous electrolyte solution; and a positive electrode and a negative electrode, each of which is capable of absorbing and desorbing lithium. This lithium ion secondary battery is configured such that the nonaqueous electrolyte solution contains (A) an electrolyte, (B) a nonaqueous organic solvent and (C) a compound that is obtained by substituting at least one hydrogen atom, which is bonded to a carbon atom in an aromatic ring of a compound that has at least one aromatic ring and no amino group, by a group that is represented by formula (1); and this lithium ion secondary battery is charged at a voltage within the range of 4.35-5 V for use.Type: ApplicationFiled: March 28, 2019Publication date: February 4, 2021Applicant: NISSAN CHEMICAL CORPORATIONInventor: Yuki SHIBANO
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Patent number: 10749183Abstract: Provided is an electrode for energy storage devices, which is provided with: a collector substrate; an undercoat layer that is formed on at least one surface of the collector substrate and contains carbon nanotubes; and an active material layer that is formed on the surface of the undercoat layer and contains an active material which contains a titanium-containing oxide.Type: GrantFiled: December 21, 2016Date of Patent: August 18, 2020Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yuki Shibano, Tatsuya Hatanaka, Takuji Yoshimoto
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Patent number: 10749172Abstract: Provided is an electrode for energy storage devices, which is provided with a collector substrate, an undercoat layer that is formed on at least one surface of the collector substrate and contains carbon nanotubes, and an active material layer that is formed on the surface of the undercoat layer, and wherein the active material layer does not contain a conductive assistant.Type: GrantFiled: December 21, 2016Date of Patent: August 18, 2020Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yuki Shibano, Tatsuya Hatanaka, Takuji Yoshimoto
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Patent number: 10658696Abstract: A nonaqueous secondary cell provided with: a positive electrode provided with a positive-electrode current-collecting substrate and a positive-electrode active material layer formed thereon, the positive-electrode active material layer being able to absorb or discharge lithium; a negative electrode provided with a negative-electrode current-collecting substrate and a negative-electrode active material layer formed thereon, the negative-electrode active material layer being able to absorb or discharge lithium; a separator interposed between the positive and negative electrodes; and a nonaqueous electrolyte solution. The nonaqueous electrolyte solution contains a sulfonyl imide electrolyte and a nonaqueous organic solvent. An electroconductive protective layer obtained by dispersing an electroconductive carbon material in a binder resin is formed on one or both surfaces of the positive-electrode current-collecting substrate and/or the negative-electrode current-collecting substrate.Type: GrantFiled: November 25, 2016Date of Patent: May 19, 2020Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Tatsuya Hatanaka, Yuki Shibano, Takuji Yoshimoto
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Publication number: 20200083516Abstract: Provided is a production method for a thin film containing a conductive carbon material, the method being characterized by including a step for applying a coating liquid which contains a conductive carbon material such as carbon nanotubes using a gravure coater or a die coater.Type: ApplicationFiled: November 29, 2017Publication date: March 12, 2020Applicant: NISSAN CHEMICAL CORPORATIONInventors: Tatsuya HATANAKA, Yuki SHIBANO, Takuji YOSHIMOTO
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Publication number: 20190312282Abstract: Provided is a thin film which is formed on an aluminium foil, and which has a lightness L* in the L*a*b* colour system of at least 53, but less than 100, said lightness being measured using a specular component included (SCI) method.Type: ApplicationFiled: November 29, 2017Publication date: October 10, 2019Applicant: NISSAN CHEMICAL CORPORATIONInventors: Yuki SHIBANO, Tatsuya HATANAKA, Takuji YOSHIMOTO
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Publication number: 20190312281Abstract: This carbon nanotube-containing thin film, which is formed on a base material, has a thickness of 10-500 nm. The ratio of coverage of the base material in a thin film forming portion by carbon nanotubes included in the thin film is 20-100%. The carbon nanotube-containing thin film exhibits a high ratio of coverage of the base material, despite having a thin film thickness, is capable of being ultrasonically welded, and, when used as an undercoat layer, is capable of achieving an energy storage device exhibiting low resistance.Type: ApplicationFiled: November 29, 2017Publication date: October 10, 2019Applicant: NISSAN CHEMICAL CORPORATIONInventors: Yuki SHIBANO, Tatsuya HATANAKA, Takuji YOSHIMOTO
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Publication number: 20190300369Abstract: Provided is a production method for a thin film containing a conductive carbon material, the method including a step for applying a coating liquid which contains a conductive carbon material such as carbon nanotubes using a gravure coater or a die coater at an application speed of 20 m/minute or higher.Type: ApplicationFiled: November 29, 2017Publication date: October 3, 2019Applicant: NISSAN CHEMICAL CORPORATIONInventors: Tatsuya HATANAKA, Yuki SHIBANO, Takuji YOSHIMOTO
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Publication number: 20190296361Abstract: Provided is a thin film which has an infrared absorbance of at least 0, but less than 0.100, as measured using a p-polarized light method.Type: ApplicationFiled: November 29, 2017Publication date: September 26, 2019Applicant: NISSAN CHEMICAL CORPORATIONInventors: Yuki SHIBANO, Tatsuya HATANAKA, Takuji YOSHIMOTO
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Publication number: 20190288292Abstract: This undercoat layer for an energy storage device has a thickness of 1-200 nm. An undercoat foil provided with the undercoat layer is capable of being ultrasonically welded efficiently. An energy storage device exhibiting low resistance can be obtained by using an electrode provided with the undercoat foil.Type: ApplicationFiled: November 29, 2017Publication date: September 19, 2019Applicant: NISSAN CHEMICAL CORPORATIONInventors: Yuki SHIBANO, Tatsuya HATANAKA, Takuji YOSHIMOTO
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Publication number: 20190218326Abstract: Provided is an agent for dispersing an electrically conductive carbon material, in which the agent consists of a polymer which has an oxazoline group in a side chain and which is obtained by using an oxazoline group-containing monomer such as that represented by formula (1) for example, and in which the agent exhibits excellent dispersion of an electrically conductive carbon material and produces a thin film that exhibits excellent adhesion to a current collection substrate when formed into a thin film together with the electrically conductive carbon material. (In the formula, X denotes a polymerizable carbon-carbon double bond-containing group, and R1-R4 each independently denote a hydrogen atom, a halogen atom, an alkyl group optionally having a branched structure having 1-5 carbon atoms, an aryl group having 6-20 carbon atoms, or an aralkyl group having 7-20 carbon atoms.Type: ApplicationFiled: March 20, 2019Publication date: July 18, 2019Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Tatsuya HATANAKA, Yuki SHIBANO, Takuji YOSHIMOTO
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Publication number: 20190044132Abstract: Provided is an electrode for energy storage devices, which is provided with a collector substrate, an undercoat layer that is formed on at least one surface of the collector substrate and contains carbon nanotubes, and an active material layer that is formed on the surface of the undercoat layer, and wherein the active material layer does not contain a conductive assistant.Type: ApplicationFiled: December 21, 2016Publication date: February 7, 2019Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yuki SHIBANO, Tatsuya HATANAKA, Takuji YOSHIMOTO
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Patent number: 10193160Abstract: A hyper-branched polymer dispersant represented by, for example, formula (I) has high adhesion properties to a current collector substrate and therefore enables the formation of an electrically conductive bonding layer having high carbon nanotube concentration. When a composite current collector for an energy storage device electrode which is equipped with the electrically conductive bonding layer is used, it becomes possible to produce an energy storage device from which an electrical current can be extracted without causing the decrease in a voltage particularly in use applications that require a large electrical current instantaneously, such as electrical automotive applications, and which has a long cycle life.Type: GrantFiled: September 6, 2013Date of Patent: January 29, 2019Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Yuki Shibano, Shigeru Mitsui, Takuji Yoshimoto