Patents by Inventor Kazunori Fujita
Kazunori Fujita 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: 20240141521Abstract: A water electrolysis cell includes an anode-side porous channel, a membrane electrode assembly, a cathode-side porous channel, and a separator disposed on at least any one of a side of the anode-side porous channel opposite to the membrane electrode assembly side and a side of the cathode-side porous channel opposite to the membrane electrode assembly side. The anode-side porous channel, the membrane electrode assembly, and the cathode-side porous channel are provided in this order. The membrane electrode assembly includes an anode catalyst layer, an electrolyte membrane, and a cathode catalyst layer in order from the anode-side porous channel side. An area in a plane direction of the anode-side porous channel is greater than an area in the plane direction of the cathode-side porous channel in a plan view.Type: ApplicationFiled: August 22, 2023Publication date: May 2, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazunori SHIBATA, Keisuke FUJITA, Joji YOSHIMURA
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Patent number: 11801486Abstract: A synthetic product production system is provided with: a synthesis plant for producing a synthetic product by synthesizing a hydrogen-containing gas and carbon dioxide; and a carbon dioxide supply line for supplying the carbon dioxide to the synthesis plant from a recovery and storage plant including a recovery device for recovering the carbon dioxide from a carbon dioxide-containing gas and an injection facility for fixing the recovered carbon dioxide into a stratum.Type: GrantFiled: September 16, 2020Date of Patent: October 31, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shinya Marushima, Tadateru Tanioka, Kazunori Fujita, Yoshimasa Ando, Takahiro Kamo, Kenichi Irie, Atsushi Tsutsumi
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Patent number: 11802344Abstract: A hydrogen production system includes: a hydrogen production device connected to an electric power system or connected to a power generation device using renewable energy and configured to produce hydrogen by electrolyzing pure water; an output control unit capable of controlling an amount of power supplied from the electric power system to the hydrogen production device according to request from the electric power system; a first pure water line for supplying pure water to the hydrogen production device; a first adjustment device capable of adjusting an amount of pure water supplied to the hydrogen production device via the first pure water line; and a first control unit configured to control the first adjustment device, based on a power amount signal indicating information on an amount of power supplied from the electric power system to the hydrogen production device.Type: GrantFiled: July 18, 2022Date of Patent: October 31, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shinya Marushima, Atsushi Tsutsumi, Yoshimasa Ando, Kazunori Fujita, Tadateru Tanioka
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Publication number: 20220349068Abstract: A hydrogen production system includes: a hydrogen production device connected to an electric power system or connected to a power generation device using renewable energy and configured to produce hydrogen by electrolyzing pure water; an output control unit capable of controlling an amount of power supplied from the electric power system to the hydrogen production device according to request from the electric power system; a first pure water line for supplying pure water to the hydrogen production device; a first adjustment device capable of adjusting an amount of pure water supplied to the hydrogen production device via the first pure water line; and a first control unit configured to control the first adjustment device, based on a power amount signal indicating information on an amount of power supplied from the electric power system to the hydrogen production device.Type: ApplicationFiled: July 18, 2022Publication date: November 3, 2022Inventors: Shinya MARUSHIMA, Atsushi TSUTSUMI, Yoshimasa ANDO, Kazunori FUJITA, Tadateru TANIOKA
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Publication number: 20220331773Abstract: A synthetic product production system is provided with: a synthesis plant for producing a synthetic product by synthesizing a hydrogen-containing gas and carbon dioxide; and a carbon dioxide supply line for supplying the carbon dioxide to the synthesis plant from a recovery and storage plant including a recovery device for recovering the carbon dioxide from a carbon dioxide-containing gas and an injection facility for fixing the recovered carbon dioxide into a stratum.Type: ApplicationFiled: September 16, 2020Publication date: October 20, 2022Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shinya Marushima, Tadateru Tanioka, Kazunori Fujita, Yoshimasa Ando, Takahiro Kamo, Kenichi Irie, Atsushi Tsutsumi
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Patent number: 11421329Abstract: A hydrogen production system includes: a hydrogen production device connected to an electric power system and configured to produce hydrogen by electrolyzing pure water; an output control unit capable of controlling an amount of power supplied from the electric power system to the hydrogen production device according to request from the electric power system; a first pure water line for supplying pure water to the hydrogen production device; a first adjustment device capable of adjusting an amount of pure water supplied to the hydrogen production device via the first pure water line; and a first control unit configured to control the first adjustment device, based on a power amount signal indicating information on an amount of power supplied from the electric power system to the hydrogen production device.Type: GrantFiled: August 21, 2019Date of Patent: August 23, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Shinya Marushima, Atsushi Tsutsumi, Yoshimasa Ando, Kazunori Fujita, Tadateru Tanioka
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Patent number: 11398574Abstract: A solar cell includes: a semiconductor substrate which includes a first principal surface and a second principal surface; a first semiconductor layer of the first conductivity type disposed above the first principal surface; and a second semiconductor layer of a second conductivity type disposed below the second principal surface. The semiconductor substrate includes: a first impurity region of the first conductivity type; a second impurity region of the first conductivity type disposed between the first impurity region and the first semiconductor layer; and a third impurity region of the first conductivity type disposed between the first impurity region and the second semiconductor layer. A concentration of an impurity in the second impurity region is higher than a concentration of the impurity in the third impurity region, and the concentration of the impurity in the third impurity region is higher than a concentration of the impurity in the first impurity region.Type: GrantFiled: March 25, 2020Date of Patent: July 26, 2022Assignee: PANASONIC HOLDINGS CORPORATIONInventors: Kazunori Fujita, Kenta Matsuyama
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Patent number: 11300010Abstract: This cooling equipment comprises: a refrigerant supply line (81) supplying, to a condenser (6), a condenser refrigerant which cools steam (Sb) that has driven a steam turbine (5), to return the steam (Sb) to water (W); and a cooling part (80) which is disposed on the refrigerant supply line (81), and performs heat exchange between liquefied gas used as fuel for a gas turbine (2) and the condenser refrigerant to heat and vaporize the liquefied gas and to cool the condenser refrigerant at the same time.Type: GrantFiled: September 8, 2015Date of Patent: April 12, 2022Assignee: MITSUBISHI POWER, LTD.Inventor: Kazunori Fujita
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Publication number: 20210262100Abstract: A hydrogen production system includes: a hydrogen production device connected to an electric power system and configured to produce hydrogen by electrolyzing pure water; an output control unit capable of controlling an amount of power supplied from the electric power system to the hydrogen production device according to request from the electric power system; a first pure water line for supplying pure water to the hydrogen production device; a first adjustment device capable of adjusting an amount of pure water supplied to the hydrogen production device via the first pure water line; and a first control unit configured to control the first adjustment device, based on a power amount signal indicating information on an amount of power supplied from the electric power system to the hydrogen production device.Type: ApplicationFiled: August 21, 2019Publication date: August 26, 2021Inventors: Shinya MARUSHIMA, Atsushi TSUTSUMI, Yoshimasa ANDO, Kazunori FUJITA, Tadateru TANIOKA
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Patent number: 10804549Abstract: Provided are: a power generation system that can generate electric power efficiently with a fuel cell; and a method for operating said power generation system. This power generation system comprises: a fuel cell including a plurality of unit fuel cell modules; a gas turbine; various lines for circulating fuel gas, air, discharged fuel gas, and discharged air between the fuel cell and the gas turbine; and a control device. The control device determines the number of said unit fuel cell modules to be operated on the basis of the required power generation amount, and operates the determined number of said unit fuel cell modules.Type: GrantFiled: December 18, 2013Date of Patent: October 13, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yukimasa Nakamoto, Kazunori Fujita
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Publication number: 20200313009Abstract: A solar cell includes: a semiconductor substrate which includes a first principal surface and a second principal surface; a first semiconductor layer of the first conductivity type disposed above the first principal surface; and a second semiconductor layer of a second conductivity type disposed below the second principal surface. The semiconductor substrate includes: a first impurity region of the first conductivity type; a second impurity region of the first conductivity type disposed between the first impurity region and the first semiconductor layer; and a third impurity region of the first conductivity type disposed between the first impurity region and the second semiconductor layer. A concentration of an impurity in the second impurity region is higher than a concentration of the impurity in the third impurity region, and the concentration of the impurity in the third impurity region is higher than a concentration of the impurity in the first impurity region.Type: ApplicationFiled: March 25, 2020Publication date: October 1, 2020Inventors: Kazunori Fujita, Kenta Matsuyama
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Patent number: 10533495Abstract: This power generation system is provided with: a gas turbine having a compressor, a combustor and a turbine; a first compressed air supply line that supplies compressed air, which has been compressed by the compressor, to the combustor; a solid oxide fuel cell (SOFC) having an air electrode and a fuel electrode; a compressed air supply device capable of generating compressed air; and a second compressed air supply line that supplies compressed air, which has been compressed by the compressed air supply device to the SOFC. The fuel cell can thus be stably operated regardless of the operating state of the gas turbine.Type: GrantFiled: May 31, 2017Date of Patent: January 14, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yukimasa Nakamoto, Kazunori Fujita
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Publication number: 20190221702Abstract: In an example embodiment, a method for producing a solar cell includes forming a passivation layer over a first principal surface of a crystalline silicon wafer; forming a substantially intrinsic i-type silicon layer over the passivation layer; forming n+ layers on and near principal surfaces of the wafer and turning the i-type silicon layer to be an n-type crystalline silicon layer by thermally diffusing an n-type dopant in the passivation layer, the i-type silicon layer, and the crystalline silicon wafer; and forming a p-type amorphous silicon layer on a second principal surface side of the crystalline silicon wafer in which the n+ layers are formed (n-type crystalline silicon wafer).Type: ApplicationFiled: March 21, 2019Publication date: July 18, 2019Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kazunori Fujita, Keiichiro Masuko, Ayumu Yano
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Publication number: 20190157489Abstract: A solar cell according to one embodiment of the present invention is provided with: an n-type crystalline silicon wafer having an n+ layer in the entire wafer surface and in the vicinity thereof, said n+ layer having a higher n-type dopant concentration than the other regions; a low concentration P-containing silicon oxide layer which is formed on a light receiving surface of the n-type crystalline silicon wafer; an n-type crystalline silicon layer which is formed on the low concentration P-containing silicon oxide layer; and a p-type amorphous silicon layer which is formed on the back surface side of the n-type crystalline silicon wafer.Type: ApplicationFiled: January 28, 2019Publication date: May 23, 2019Applicant: Panasonic Intellectual Property Management Co., Lt d.Inventors: Kenta Matsuyama, Kazunori Fujita, Satoru Shimada
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Publication number: 20190006534Abstract: According to one example of an embodiment of the present invention, a solar cell is provided with an n-type crystalline silicon wafer; a first passivation layer, which is formed on the light receiving surface of the n-type crystalline silicon wafer, and which is configured by having, as a main component, silicon oxide, silicon carbide, or silicon nitride; an n-type crystalline silicon layer formed on the first passivation layer; a second passivation layer formed on the rear surface of the n-type crystalline silicon wafer; and a p-type amorphous silicon layer formed on the second passivation layer.Type: ApplicationFiled: August 13, 2018Publication date: January 3, 2019Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kazunori Fujita, Daisuke Fujishima, Yasufumi Tsunomura, Mikio Taguchi, Keiichiro Masuko
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Publication number: 20180223696Abstract: This cooling equipment comprises: a refrigerant supply line (81) supplying, to a condenser (6), a condenser refrigerant which cools steam (Sb) that has driven a steam turbine (5), to return the steam (Sb) to water (W); and a cooling part (80) which is disposed on the refrigerant supply line (81), and performs heat exchange between liquefied gas used as fuel for a gas turbine (2) and the condenser refrigerant to heat and vaporize the liquefied gas and to cool the condenser refrigerant at the same time.Type: ApplicationFiled: September 8, 2015Publication date: August 9, 2018Inventor: Kazunori FUJITA
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Patent number: 9945265Abstract: A power generation system having a gas turbine, a fuel cell, an exhaust air circulation line, an exhaust fuel gas supply line, a turbine, an exhaust heat recovery boiler, and at least one exhaust air heat exchanger. The turbine is equipped with a high-pressure turbine, a medium-pressure turbine, and a low-pressure turbine. The exhaust heat recovery boiler is equipped with a high-pressure steam circulation mechanism, a medium-pressure steam circulation mechanism, and a low-pressure steam circulation mechanism. The exhaust air heat exchanger exchanges heat between the steam exchanging heat with the exhaust gas in the high-pressure steam circulation mechanism or the medium-pressure steam circulation mechanism and flowing toward the turbine and the exhaust gas flowing through the exhaust air circulation line, thereby increasing the temperature of the steam and decreasing the temperature of the exhaust gas.Type: GrantFiled: November 5, 2013Date of Patent: April 17, 2018Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yukimasa Nakamoto, Kazunori Fujita
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Patent number: 9926844Abstract: A power generation system includes a gas turbine, a fuel cell, an exhausted fuel gas supply line, an on-off control valve arranged in the exhausted fuel gas supply line, a heating unit that heats the exhausted fuel gas supply line in a range on an upstream side of the on-off control valve, a detection unit that detects a state of exhausted fuel gas in the exhausted fuel gas supply line in the range on the upstream side of the on-off control valve, and a control unit which controls the heating of the exhausted fuel gas supply line by the heating unit and which sets the on-off control valve to open when determining that the heating of the exhausted fuel gas supply line is completed.Type: GrantFiled: October 28, 2013Date of Patent: March 27, 2018Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventor: Kazunori Fujita
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Patent number: 9831505Abstract: In order to protect the temperature of an exhaust stream in an exhaust line, even if the temperature of the exhaust stream discharged from a fuel cell exceeds a temperature during rated operation, a power generation system has: an SOFC; an exhaust air line or an exhaust fuel line, wherein the exhaust air line and exhaust fuel line carry exhaust air and exhaust fuel gas discharged from the SOFC, respectively; a temperature detector for detecting the temperature of the exhaust air or the exhaust fuel gas discharged from the SOFC or the temperature of the exhaust air line or the exhaust fuel line; an exhaust cooling device for cooling the exhaust air in the exhaust air line or the exhaust fuel gas in the exhaust fuel line; and a control device for activating the exhaust cooling device when the temperature detected by the temperature detector exceeds a predetermined temperature.Type: GrantFiled: November 5, 2013Date of Patent: November 28, 2017Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yukimasa Nakamoto, Kazunori Fujita
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Power generation system, and methods for starting and operating fuel cell in power generation system
Patent number: 9806358Abstract: The present invention enables a fuel cell to be stably started by minimizing a lack of air in a gas turbine when starting the fuel cell.Type: GrantFiled: October 28, 2013Date of Patent: October 31, 2017Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yukimasa Nakamoto, Kazunori Fujita