Patents by Inventor Tetsutaro SATO
Tetsutaro SATO 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: 20230317969Abstract: A metal-supported catalyst, a battery electrode, and a battery. The metal-supported catalyst includes: a carbon carrier; and catalyst metal particles supported on the carbon carrier, wherein a ratio of number-average particle diameter of catalyst metal particles to average pore diameter of metal-supported catalyst is 0.70 or more and 1.30 or less, wherein, at relative pressure of a nitrogen adsorption isotherm of metal-supported catalyst within a range of 0.4 or more and 0.6 or less, maximum value of a ratio of a nitrogen adsorption amount of a desorption-side isotherm to a nitrogen adsorption amount of an adsorption-side isotherm is 1.05 or less, and wherein proportion of number of the catalyst metal particles each supported at a position having a depth of 20 nm or more from an outer surface of the carbon carrier to a total number of the catalyst metal particles supported on the carbon carrier is 11% or more.Type: ApplicationFiled: August 10, 2021Publication date: October 5, 2023Applicant: NISSHINBO HOLDINGS INC.Inventors: Ayaka FUJIMOTO, Yoshikazu KOBAYASHI, Tetsutaro SATO, Takeaki KISHIMOTO
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Publication number: 20230307663Abstract: A metal-supported catalyst, a battery electrode, and a battery each having both excellent catalytic activity and durability. The metal-supported catalyst is a metal-supported catalyst including: a carbon carrier; and catalyst metal particles supported on the carbon carrier, wherein the metal-supported catalyst has a carbon structure that exhibits a half width at half maximum of 53.0 cm?1 or less of a D band having a peak top in a vicinity of 1,340 cm?1 in a Raman spectrum obtained by Raman spectroscopy, and wherein the metal-supported catalyst includes the catalyst metal particles that are partially buried in a pore inner surface of the carbon carrier.Type: ApplicationFiled: August 10, 2021Publication date: September 28, 2023Applicant: NISSHINBO HOLDINGS INC.Inventors: Takuya ISHIZUKA, Yoshikazu KOBAYASHI, Tetsutaro SATO, Takeaki KISHIMOTO
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Publication number: 20220302469Abstract: 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: June 7, 2022Publication date: September 22, 2022Applicant: NISSHINBO HOLDINGS INC.Inventors: Tetsutaro SATO, Yuji KUBOTA, Takeaki KISHIMOTO, Kumi NARIZUKA, Koji KAMATA, Yoshikazu KOBAYASHI
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Publication number: 20220263100Abstract: A metal-supported catalyst, a battery electrode, and a battery, each having both excellent catalytic activity and durability. The metal-supported catalyst includes: a carbon carrier; and catalyst metal particles each containing a noble metal supported on the carbon carrier, wherein a volume of first pores each having a diameter of 0.5 nm or more and 2.0 nm or less per unit weight of the carbon carrier is 0.20 (cm3/g-carrier) or more, wherein a volume of second pores each having a diameter of more than 2.0 nm and 4.0 nm or less per unit weight of the carbon carrier is 0.20 (cm3/g-carrier) or more, and wherein a ratio of a content (wt %) of the noble metal measured by X-ray photoelectron spectroscopy, to a content (wt %) of the noble metal measured by inductively coupled plasma mass spectrometry, is 0.35 or more and 0.75 or less.Type: ApplicationFiled: July 2, 2020Publication date: August 18, 2022Applicant: NISSHINBO HOLDINGS INC.Inventors: Tetsutaro SATO, Takeaki KISHIMOTO, Takuya ISHIZUKA, Takuya ISAKA, Yoshikazu KOBAYASHI, Miki MEGURO
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Patent number: 11398629Abstract: 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: September 25, 2019Date of Patent: July 26, 2022Assignees: 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: 11387466Abstract: 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: GrantFiled: July 3, 2018Date of Patent: July 12, 2022Assignee: NISSHINBO HOLDINGS INC.Inventors: Tetsutaro Sato, Yuji Kubota, Takeaki Kishimoto, Kumi Narizuka, Koji Kamata, Yoshikazu Kobayashi
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Patent number: 11344867Abstract: 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: GrantFiled: July 3, 2018Date of Patent: May 31, 2022Assignee: NISSHINBO HOLDINGS INC.Inventors: Yuji Kubota, Takeaki Kishimoto, Kumi Narizuka, Tetsutaro Sato
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Patent number: 11145876Abstract: A carbon catalyst, a battery electrode, and a battery each having excellent catalytic activity and excellent durability. The carbon catalyst includes iron, exhibits a weight reduction ratio in the temperature range from 200° C. to 1,200° C. of 12.0 wt % or less measured by thermogravimetric analysis in a nitrogen atmosphere, and has a carbon structure that exhibits, in X-ray absorption fine structure analysis of a K absorption edge of the iron, the following (a) and/or (b): (a) a ratio of a normalized absorbance at 7,130 eV to a normalized absorbance at 7,110 eV is 7.0 or more; and (b) a ratio of a normalized absorbance at 7,135 eV to a normalized absorbance at 7,110 eV is 7.0 or more.Type: GrantFiled: July 3, 2018Date of Patent: October 12, 2021Assignee: NISSHINBO HOLDINGS INC.Inventors: Yoshikazu Kobayashi, Yuji Kubota, Tetsutaro Sato, Takeaki Kishimoto
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Publication number: 20200243873Abstract: A carbon catalyst, a battery electrode, and a battery each having excellent catalytic activity and excellent durability. The carbon catalyst includes iron, exhibits a weight reduction ratio in the temperature range from 200° C. to 1,200° C. of 12.0 wt % or less measured by thermogravimetric analysis in a nitrogen atmosphere, and has a carbon structure that exhibits, in X-ray absorption fine structure analysis of a K absorption edge of the iron, the following (a) and/or (b): (a) a ratio of a normalized absorbance at 7,130 eV to a normalized absorbance at 7,110 eV is 7.0 or more; and (b) a ratio of a normalized absorbance at 7,135 eV to a normalized absorbance at 7,110 eV is 7.0 or more.Type: ApplicationFiled: July 3, 2018Publication date: July 30, 2020Applicant: NISSHINBO HOLDINGS INC.Inventors: Yoshikazu KOBAYASHI, Yuji KUBOTA, Tetsutaro SATO, Takeaki KISHIMOTO
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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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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: 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