Patents by Inventor Yoshio Shodai
Yoshio Shodai 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: 11702344Abstract: A method of producing a porous carbon is provided that can change type of functional groups, amount of functional groups, or ratio of functional groups while inhibiting its pore structure from changing. A method of producing a porous carbon includes: a first step of carbonizing a material containing a carbon source and a template source, to prepare a carbonized product; and a second step of immersing the carbonized product into a template removing solution, to remove a template from the carbonized product, and the method is characterized by changing at least two or more of the following conditions: type of the material, ratio of the carbon source and the template source, size of the template, and type of the template removal solution, to thereby control type, amount, or ratio of functional groups that are present in the porous carbon.Type: GrantFiled: December 15, 2021Date of Patent: July 18, 2023Assignee: TOYO TANSO CO., LTD.Inventors: Mizuho Anzai, Takahiro Morishita, Yoshio Shodai
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Publication number: 20220328846Abstract: A supported platinum catalyst having a high ratio of a diffraction peak intensity of a Pt (220) plane and having excellent oxidation resistance, obtained by a simple production method without using a polymer. The supported platinum catalyst includes a carbon support and platinum fine particles supported on the carbon support, the platinum fine particles being such that a ratio of a diffraction peak intensity of a (220) plane with respect to a total of diffraction peak intensities of a (111) plane, a (200) plane, and the (220) plane by X-ray diffraction is not less than 0.128.Type: ApplicationFiled: June 3, 2020Publication date: October 13, 2022Applicant: TOYO TANSO CO., LTD.Inventors: Yoshio SHODAI, Mizuho ANZAI
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Publication number: 20220127147Abstract: A method of producing a porous carbon is provided that can change type of functional groups, amount of functional groups, or ratio of functional groups while inhibiting its pore structure from changing. A method of producing a porous carbon includes: a first step of carbonizing a material containing a carbon source and a template source, to prepare a carbonized product; and a second step of immersing the carbonized product into a template removing solution, to remove a template from the carbonized product, and the method is characterized by changing at least two or more of the following conditions: type of the material, ratio of the carbon source and the template source, size of the template, and type of the template removal solution, to thereby control type, amount, or ratio of functional groups that are present in the porous carbon.Type: ApplicationFiled: December 15, 2021Publication date: April 28, 2022Inventors: Mizuho ANZAI, Takahiro MORISHITA, Yoshio SHODAI
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Patent number: 11235978Abstract: A method of producing a porous carbon is provided that can change type of functional groups, amount of functional groups, or ratio of functional groups while inhibiting its pore structure from changing. A method of producing a porous carbon includes: a first step of carbonizing a material containing a carbon source and a template source, to prepare a carbonized product; and a second step of immersing the carbonized product into a template removing solution, to remove a template from the carbonized product, and the method is characterized by changing at least two or more of the following conditions: type of the material, ratio of the carbon source and the template source, size of the template, and type of the template removal solution, to thereby control type, amount, or ratio of functional groups that are present in the porous carbon.Type: GrantFiled: July 1, 2019Date of Patent: February 1, 2022Assignee: TOYO TANSO CO., LTD.Inventors: Mizuho Anzai, Takahiro Morishita, Yoshio Shodai
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Publication number: 20210246033Abstract: A method of producing a porous carbon is provided that can change type of functional groups, amount of functional groups, or ratio of functional groups while inhibiting its pore structure from changing. A method of producing a porous carbon includes: a first step of carbonizing a material containing a carbon source and a template source, to prepare a carbonized product; and a second step of immersing the carbonized product into a template removing solution, to remove a template from the carbonized product, and the method is characterized by changing at least two or more of the following conditions: type of the material, ratio of the carbon source and the template source, size of the template, and type of the template removal solution, to thereby control type, amount, or ratio of functional groups that are present in the porous carbon.Type: ApplicationFiled: July 1, 2019Publication date: August 12, 2021Inventors: Mizuho ANZAI, Takahiro MORISHITA, Yoshio SHODAI
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Patent number: 10675611Abstract: Provided are a carbon powder which can provide a catalyst exhibiting high performance and a catalyst. A carbon powder for fuel cell comprising carbon as a main component, which has a ratio (B/A) of an area B of peak 1 to an area A of peak 0 of more than 0 and 0.15 or less, wherein the area A represents an area of peak 0 at a position of 2?=22.5° to 25° as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800° C. for 1 hour in an inert atmosphere, and the area B represents an area of peak 1 at a position of 2?=26° as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800° C. for 1 hour in an inert atmosphere.Type: GrantFiled: January 18, 2017Date of Patent: June 9, 2020Assignees: NISSAN MOTOR CO., LTD., TOYO TANSO CO., LTD.Inventors: Takehiko Okui, Hiroyuki Tanaka, Kazuki Arihara, Tetsuya Mashio, Atsushi Ohma, Takahiro Morishita, Yoshio Shodai
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Publication number: 20190083957Abstract: Provided are a carbon powder which can provide a catalyst exhibiting high performance and a catalyst. A carbon powder for fuel cell comprising carbon as a main component, which has a ratio (B/A) of an area B of peak 1 to an area A of peak 0 of more than 0 and 0.15 or less, wherein the area A represents an area of peak 0 at a position of 2?=22.5° to 25° as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800° C. for 1 hour in an inert atmosphere, and the area B represents an area of peak 1 at a position of 2?=26° as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800° C. for 1 hour in an inert atmosphere.Type: ApplicationFiled: January 18, 2017Publication date: March 21, 2019Applicants: NISSAN MOTOR CO., LTD., TOYO TANSO CO., LTD.Inventors: Takehiko OKUI, Hiroyuki TANAKA, Kazuki ARIHARA, Tetsuya MASHIO, Atsushi OHMA, Takahiro MORISHITA, Yoshio SHODAI
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Publication number: 20160064744Abstract: Object Provided is a catalyst having an excellent durability and being capable of lowering the cost of a fuel cell. Solving Means Disclosed is a catalyst configured to include a support and alloy particles including platinum and a metal component other than platinum supported on the support, wherein the catalyst includes mesopores having a radius of 1 to 10 nm originated from the support, wherein a mode radius of the mesopores is in a range of 2.5 to 10 nm, and wherein the alloy particles have a catalyst function, and at least a portion of the alloy particles is supported inside the mesopores.Type: ApplicationFiled: April 14, 2014Publication date: March 3, 2016Applicants: NISSAN MOTOR CO., LTD., TOYO TANSO CO., LTD.Inventors: Tetsuya MASHIO, Yoshihisa FURUYA, Ken Akizuki, Atsushi OHMA, Takahiro MORISHITA, Yoshio SHODAI
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Publication number: 20150162138Abstract: A capacitor that has a high frequency response rate and is capable of being charged and discharged at high speed is provided. The capacitor includes a polarized electrode containing a carbon material and an electrolyte solution, and is characterized in that the frequency response rate is 0.7 Hz or higher when the electrolyte solution is 40 mass % of sulfuric acid. The carbon material includes porous carbon having pores and a carbonaceous wall that constitutes an outer wall of the pores, the porous carbon being configured so that the pores are open pores and hollow portions thereof are connected to each other.Type: ApplicationFiled: August 7, 2013Publication date: June 11, 2015Applicant: TOYO TANSO CO., LTD.Inventor: Yoshio Shodai
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Patent number: 8974647Abstract: The fluorine gas generation device includes an electrolyzer. An electrolytic bath is formed in the electrolyzer. A cathode is disposed in a cathode chamber, and an anode is disposed in an anode chamber. As a voltage is applied across the cathode and the anode, electrolysis of HF (hydrogen fluoride) takes place. In the electrolyzer, hydrogen gas is primarily generated from the cathode and fluorine gas is primarily generated from the anode. Two heating furnaces are provided for heating NaF pellets packed in HF adsorption columns. Each heating furnace has two HF adsorption columns disposed therein.Type: GrantFiled: March 18, 2011Date of Patent: March 10, 2015Assignee: Toyo Tanso Co., Ltd.Inventors: Yoshio Shodai, Masashi Kodama, Nobutaka Manabe, Noriyuki Tanaka
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Publication number: 20130068627Abstract: A control device receives an output signal from a liquid level sensor disposed in an anode chamber. This output signal indicates whether the liquid level of the electrolytic bath in the anode chamber is higher than a reference level. When the liquid level of the electrolytic bath in the anode chamber is higher than the reference level, the control device increases, by a prescribe value, the frequency of a compressor driving voltage that is generated in an inverter circuit. This increases the rotational speed of a motor in the compressor, increases the discharge pressure of hydrogen gas being discharged from the compressor, and decreases the pressure inside the cathode chamber. As a result, the liquid level of the electrolytic bath in the cathode chamber rises, and the liquid level of the electrolytic bath in the anode chamber falls below the reference level.Type: ApplicationFiled: March 23, 2011Publication date: March 21, 2013Applicant: TOYO TANSO CO., LTD.Inventors: Yoshio Shodai, Osamu Yoshimoto, Noriyuki Tanaka, Yasuhiro Yano
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Publication number: 20130008783Abstract: The fluorine gas generation device includes an electrolyzer. An electrolytic bath is formed in the electrolyzer. A cathode is disposed in a cathode chamber, and an anode is disposed in an anode chamber. As a voltage is applied across the cathode and the anode, electrolysis of HF (hydrogen fluoride) takes place. In the electrolyzer, hydrogen gas is primarily generated from the cathode and fluorine gas is primarily generated from the anode. Two heating furnaces are provided for heating NaF pellets packed in HF adsorption columns. Each heating furnace has two HF adsorption columns disposed therein.Type: ApplicationFiled: March 18, 2011Publication date: January 10, 2013Applicant: TOYO TANSO CO., LTDInventors: Yoshio Shodai, Masashi Kodama, Nobutaka Manabe, Noriyuki Tanaka
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Patent number: 8282796Abstract: A carbonaceous substrate of the present invention is such that an X-ray diffraction pattern thereof is a complex profile and includes at least two (002) diffraction lines; and the substrates contains crystallites with different interlayer spacings. Further, in the X-ray diffraction pattern, (002) diffraction lines between 2?=10° and 2?=30° have an asymmetric shape; and the X-ray diffraction pattern includes at least two pattern components which are a diffraction line whose center is at 2?=26° and a diffraction line whose center is at a lower angle than 2?=26°. Further, the carbonaceous substrate contains crystals wherein the periodic distance d002 is 0.34 nm or more and the crystallite size Lc002 is 20 nm or less based on the X-ray diffraction lines. An electrodes for fluorine electrolysis of the present invention includes the carbonaceous substrate on which a conductive diamond thin film is formed.Type: GrantFiled: September 19, 2008Date of Patent: October 9, 2012Assignee: Toyo Tanso Co., Ltd.Inventors: Rie Tao, Takanori Kawano, Yoshio Shodai
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Publication number: 20100252425Abstract: A carbonaceous substrate of the present invention is such that an X-ray diffraction pattern thereof is a complex profile and includes at least two (002) diffraction lines; and the substrates contains crystallites with different interlayer spacings. Further, in the X-ray diffraction pattern, (002) diffraction lines between 2?=10° and 2?=30° have an asymmetric shape; and the X-ray diffraction pattern includes at least two pattern components which are a diffraction line whose center is at 2?=26° and a diffraction line whose center is at a lower angle than 2?=26°. Further, the carbonaceous substrate contains crystals wherein the periodic distance d002 is 0.34 nm or more and the crystallite size Lc002 is 20 nm or less based on the X-ray diffraction lines. An electrodes for fluorine electrolysis of the present invention includes the carbonaceous substrate on which a conductive diamond thin film is formed.Type: ApplicationFiled: September 19, 2008Publication date: October 7, 2010Applicant: Toyo Tanso Co., Ltd.Inventors: Rie Tao, Takanori Kawano, Yoshio Shodai