Patents by Inventor Takeaki Kishimoto
Takeaki Kishimoto 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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Publication number: 20200171470Abstract: A carbon catalyst has: a carbon structure that exhibits a nitrogen desorption temperature range from 800° C.-1,000° C. of 0.75×10?5 mol/g or more or a nitrogen desorption amount in the range from 600° C. to 1,000° C. of 1.20×10?5 mol/g or more in a temperature programmed desorption method including measuring nitrogen desorption amount temperature range from 600° C. -1,000° C.; a carbon structure exhibits a zeta potential isoelectric point of pH 9.2 or more; or a carbon structure exhibits a ratio of an intensity of a first nitrogen peak within a range of a binding energy of 398.0±1.0 eV, to an intensity of a second nitrogen peak having a peak top within a range of a binding energy of 400.5±1.0 eV, of 0.620 or more, the first and second nitrogen peaks obtained by separating a peak derived from a 1s orbital of a nitrogen atom in a photoelectron spectrum obtained by X-ray photoelectron spectroscopy.Type: ApplicationFiled: July 3, 2018Publication date: June 4, 2020Applicant: NISSHINBO HOLDINGS INC.Inventors: Yuji KUBOTA, Takeaki KISHIMOTO, Kumi NARIZUKA, Tetsutaro SATO
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Publication number: 20200127301Abstract: A carbon catalyst has a carbon structure with a crystallite size Lc falling within 0.90 nm or more and 1.20 nm or less calculated through use of a Bragg angle of a diffraction peak fbroad at a diffraction angle 2? of 24.0°±4.0° obtained by separating a diffraction peak in the vicinity of a diffraction angle 2? of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction using a CuK? ray, and a carbon dioxide desorption amount from 650° C. to 1,200° C. of 97 ?mol/g or less, a total of a carbon monoxide desorption amount and a carbon dioxide desorption amount from 650° C. to 1,200° C. of 647 ?mol/g or less, or a carbon monoxide desorption amount from 650° C. to 1,200° C. of 549 ?mol/g or less in a temperature programmed desorption method including measuring a carbon dioxide desorption amount from 25° C. to 1,200° C.Type: ApplicationFiled: July 3, 2018Publication date: April 23, 2020Applicant: NISSHINBO HOLDINGS INC.Inventors: Tetsutaro SATO, Yuji KUBOTA, Takeaki KISHIMOTO, Kumi NARIZUKA, Koji KAMATA, Yoshikazu KOBAYASHI
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Publication number: 20200036013Abstract: Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.Type: ApplicationFiled: September 25, 2019Publication date: January 30, 2020Applicants: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo IMASHIRO, Takeaki Kishimoto, Tetsutaro Sato, Jun-ichi Ozaki, Takuya Maie, Sayaka Kusadokoro
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Publication number: 20190341625Abstract: An electrode for redox flow batteries is produced using a carbon catalyst for redox flow battery electrodes, the carbon catalyst being a particulate carbon catalyst and consisting of carbonaceous particles having a specific surface area of 800 to 2000 m2/g and an average particle size of 100 to 1000 nm.Type: ApplicationFiled: February 3, 2017Publication date: November 7, 2019Applicant: NISSHINBO HOLDINGS INC.Inventors: Takeaki KISHIMOTO, Mayumi MIZUSHIRI
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Publication number: 20190341626Abstract: An electrode for redox flow batteries is produced using a carbon catalyst for redox flow battery electrodes, wherein a ratio of the number of oxygen atoms to the number of carbon atoms (O/C ratio) is 0.05 to 0.20 as measured by surface analysis using X-ray photoelectron spectroscopy.Type: ApplicationFiled: February 3, 2017Publication date: November 7, 2019Applicant: NISSHINBO HOLDINGS INC.Inventors: Takeaki KISHIMOTO, Mayumi MIZUSHIRI
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Patent number: 10468688Abstract: Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.Type: GrantFiled: November 30, 2015Date of Patent: November 5, 2019Assignees: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo Imashiro, Takeaki Kishimoto, Tetsutaro Sato, Jun-ichi Ozaki, Takuya Maie, Sayaka Kusadokoro
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Publication number: 20190305323Abstract: A battery cathode, a composition for a catalyst layer of a battery cathode, and a battery, each achieves excellent performance while using a non-platinum catalyst. The battery cathode includes a catalyst layer, wherein the catalyst layer contains a non-platinum catalyst, has a thickness of 15 ?m or more, and has a conductance per 1 cm2 of an electrode area of more than 100 S and less than 350 S.Type: ApplicationFiled: May 10, 2017Publication date: October 3, 2019Applicant: NISSHINBO HOLDINGS INC.Inventors: Takeaki KISHIMOTO, Dustin William H BANHAM, Siyu YE, Katie Ling PEI, Kyoung BAI
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Publication number: 20190207225Abstract: A method for improving the performance and/or stability of non-precious metal catalysts in fuel cells and other electrochemical devices. Improved membrane electrode assemblies (MEAs) and fuel cells containing the same are provided. Such MEAs include a catalyst layer made up of at least two sub-layers containing ionomers of differing equivalent weights. The sub-layers may optionally contain mixtures of ionomers. Also provided are methods of making and using the described devices.Type: ApplicationFiled: September 29, 2017Publication date: July 4, 2019Applicant: NISSHINBO HOLDINGS INC.Inventors: Dustin William H BANHAM, Siyu YE, Takeaki KISHIMOTO, Kyoung BAI
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Publication number: 20190143308Abstract: A battery electrode, a composition for a catalyst layer of a battery electrode, and a battery having excellent characteristics at low cost. The battery electrode includes a catalyst layer containing a non-platinum catalyst and platinum particles not being carried on the non-platinum catalyst, wherein a content of the platinum particles per unit area of the battery electrode is 0.0010 mg/cm2 or more and 0.1200 mg/cm2 or less.Type: ApplicationFiled: April 13, 2017Publication date: May 16, 2019Applicant: NISSHINBO HOLDINGS INC.Inventors: Takeaki KISHIMOTO, Chihiro FUJII, Miki NAKAYAMA
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Patent number: 9711803Abstract: Provided are a carbon catalyst having an excellent activity and a method of manufacturing a carbon catalyst, and an electrode and a battery each using the carbon catalyst. The method of manufacturing a carbon catalyst according to the present invention includes a carbonizing step S2, the step involving heating a raw material containing a thermoplastic resin, a metal, and a conductive carbon material to coat the surface of the conductive carbon material with the molten thermoplastic resin and to carbonize the thermoplastic resin on the surface of the conductive carbon material so that the carbon catalyst is obtained.Type: GrantFiled: November 24, 2009Date of Patent: July 18, 2017Assignee: NISSHINBO HOLDINGS INC.Inventors: Jun-ichi Ozaki, Takeaki Kishimoto
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Publication number: 20170194653Abstract: Provided are a carbon catalyst, an electrode, and a battery that exhibit excellent activity. A carbon catalyst according to one embodiment of the present invention has a carbon structure in which area ratios of three peaks fbroad, fmiddle, and fnarrow obtained by separating a peak in the vicinity of a diffraction angle of 26° in an X-ray diffraction pattern obtained by powder X-ray diffraction satisfy the following conditions (a) to (c): (a) fbroad: 75% or more and 96% or less; (b) fmiddle: 3.2% or more and 15% or less; and (c) fnarrow: 0.4% or more and 15% or less.Type: ApplicationFiled: November 30, 2015Publication date: July 6, 2017Applicants: NISSHINBO HOLDINGS INC., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITYInventors: Yasuo IMASHIRO, Takeaki KISHIMOTO, Tetsutaro SATO, Jun-ichi OZAKI, Takuya MAIE, Sayaka KUSADOKORO
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Patent number: 9548499Abstract: A method of manufacturing a carbon catalyst according to the present invention includes: a first step S2 involving heating a raw material containing a resin and a metal to carbonize the resin so that a carbon catalyst is obtained; a second step S3 involving subjecting the carbon catalyst to a treatment for removing the metal; and a third step S4 involving subjecting the carbon catalyst that has been subjected to the treatment to a heat treatment to improve an activity of the carbon catalyst.Type: GrantFiled: May 7, 2015Date of Patent: January 17, 2017Assignee: NISSHINBO HOLDINGS INC.Inventors: Jun-ichi Ozaki, Yuka Koshigoe, Takeaki Kishimoto
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Patent number: 9373849Abstract: A carbon catalyst which has high catalytic activity and can achieve high catalyst performance is provided. The carbon catalyst comprises nitrogen. The energy peak area ratio of the first nitrogen atom whose electron in the 1s orbital has a binding energy of 398.5±1.0 eV to the second nitrogen atom whose electron in the 1s orbital has a binding energy of 401±1.0 eV (i.e., the value of (the first nitrogen atom)/(the second nitrogen atom)) of the nitrogen introduced into the catalyst is 1.2 or less.Type: GrantFiled: June 28, 2013Date of Patent: June 21, 2016Assignees: National University Corporation Gunma University, Nisshinbo Holdings, Inc.Inventors: Seizo Miyata, Masaharu Oshima, Jun-ichi Ozaki, Kazuo Saito, Shogo Moriya, Kyosuke Iida, Takeaki Kishimoto
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Patent number: 9368849Abstract: The present invention is to provide a carbonaceous material for lithium-air battery cathodes, which shows higher capacity than conventional carbonaceous materials. Disclosed are a carbonaceous material for lithium-air battery cathodes, wherein the carbonaceous material is a carbonaceous material for constituting the cathode of a lithium-air battery; wherein the carbonaceous material comprises nitrogen and a molar ratio of the nitrogen to the carbon is 1.9×10?2 or more; and wherein the carbonaceous material is a glassy material, and a lithium-air battery comprising a cathode, wherein the cathode comprises the carbonaceous material.Type: GrantFiled: September 30, 2013Date of Patent: June 14, 2016Assignee: NISSHINBO HOLDINGS INC.Inventors: Hirofumi Iisaka, Takeaki Kishimoto
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Publication number: 20150288040Abstract: The present invention is to provide a carbonaceous material for lithium-air battery cathodes, which shows higher capacity than conventional carbonaceous materials. Disclosed are a carbonaceous material for lithium-air battery cathodes, wherein the carbonaceous material is a carbonaceous material for constituting the cathode of a lithium-air battery; wherein the carbonaceous material comprises nitrogen and a molar ratio of the nitrogen to the carbon is 1.9×10?2 or more; and wherein the carbonaceous material is a glassy material, and a lithium-air battery comprising a cathode, wherein the cathode comprises the carbonaceous material.Type: ApplicationFiled: September 30, 2013Publication date: October 8, 2015Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NISSHINBO HOLDINGS INC.Inventors: Hirofumi Iisaka, Takeaki Kishimoto
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Publication number: 20150244000Abstract: A method of manufacturing a carbon catalyst according to the present invention includes: a first step S2 involving heating a raw material containing a resin and a metal to carbonize the resin so that a carbon catalyst is obtained; a second step S3 involving subjecting the carbon catalyst to a treatment for removing the metal; and a third step S4 involving subjecting the carbon catalyst that has been subjected to the treatment to a heat treatment to improve an activity of the carbon catalyst.Type: ApplicationFiled: May 7, 2015Publication date: August 27, 2015Inventors: Jun-ichi OZAKI, Yuka KOSHIGOE, Takeaki KISHIMOTO
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Patent number: 9059471Abstract: A method of manufacturing a carbon catalyst according to the present invention includes: a first step involving heating a raw material containing a resin and a metal to carbonize the resin so that a carbon catalyst is obtained; a second step involving subjecting the carbon catalyst to a treatment for removing the metal; and a third step involving subjecting the carbon catalyst that has been subjected to the treatment to a heat treatment to improve an activity of the carbon catalyst.Type: GrantFiled: November 24, 2009Date of Patent: June 16, 2015Assignee: NISSHINBO HOLDINGS INC.Inventors: Jun-ichi Ozaki, Yuka Koshigoe, Takeaki Kishimoto
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Patent number: 9040452Abstract: Provided is a method of producing a carbon catalyst having an improved activity. The method of producing carbon catalyst including a carbonization step of carbonizing raw materials containing an organic compound as a carbon source, a metal, and an electrically conductive carbon material to produce a carbonized material; a metal impregnation step of impregnating the carbonized material with a metal; and a heat treatment step of subjecting the carbonized material impregnated with the metal to a heat treatment.Type: GrantFiled: September 11, 2013Date of Patent: May 26, 2015Assignees: NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, NISSHINBO HOLDINGS INC.Inventors: Takeaki Kishimoto, Mikiko Imada, Jun-ichi Ozaki
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Patent number: 8999874Abstract: Provided is a carbon catalyst having an improved catalytic activity, a production method therefor, and an electrode and a battery which use the carbon catalyst. The carbon catalyst is obtained by carbonizing a raw material including an organic substance containing a nitrogen atom and metals, and includes iron and/or cobalt, and copper as the metals. Further, the carbon catalyst has a crystallinity of 41.0% or less, which is determined by X-ray diffractometry, a nitrogen atom-to-carbon atom ratio of 0.7 or more, which is determined by X-ray photoelectronic spectrometry, and an oxygen reduction-starting potential of 0.774 V (vs. NHE) or more.Type: GrantFiled: November 1, 2011Date of Patent: April 7, 2015Assignees: National University Corporation Gunma University, Nisshinbo Holdings Inc.Inventors: Takeaki Kishimoto, Mayumi Mizushiri, Jun-ichi Ozaki, Yusuke Sudo, Naokatsu Kannari
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Patent number: 8993164Abstract: A support for carrying a catalyst is obtained by carbonizing raw materials containing a nitrogen-containing organic substance and a metal. The support for carrying a catalyst may have a peak at a diffraction angle of around 26° in an X-ray diffraction pattern, the peak including 20 to 45% of a graphite-like structure component and 55 to 80% of an amorphous component. In addition, the support for carrying a catalyst may have an intensity ratio of a band at 1,360 cm?1 to a band at 1,580 cm?1 (I1,360/I1,580) in a Raman spectrum of 0.3 or more and 1.0 or less. In addition, the support for carrying a catalyst may be obtained by carbonizing the raw materials to obtain a carbonized material, subjecting the carbonized material to a metal removal treatment, and subjecting the resultant to a heat treatment.Type: GrantFiled: December 3, 2010Date of Patent: March 31, 2015Assignees: Nisshinbo Holdings Inc., National University Corporation Gunma UniversityInventors: Erina Matsuzaka, Takeaki Kishimoto, Jun-ichi Ozaki