Patents by Inventor Yosuke Fujii
Yosuke Fujii 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: 7226688Abstract: A fuel gas inlet is provided at an outer circumferential edge portion of a second separator. First fuel gas flow passage grooves for supplying a fuel gas to an anode electrode are formed on a side of a surface of the second separator. First fuel gas connecting flow passages, which make communication between the fuel gas inlet and the first fuel gas flow passage grooves, include flow passage grooves which are provided on a side of a surface, and through-holes which penetrate through the second separator to make communication with the first fuel gas flow passage grooves. Accordingly, excellent sealing performance is ensured with a simple structure, and it is possible to realize a thin-walled fuel cell.Type: GrantFiled: October 3, 2003Date of Patent: June 5, 2007Assignee: Honda Motor Co., Ltd.Inventors: Yosuke Fujii, Noriaki Osao, Yoshinori Wariishi, Takaki Nakagawa, Hiroshi Shinkai, Katsumi Hayashi
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Patent number: 7223490Abstract: A fuel cell which can self-heat in a short time, in which no reaction gas is necessary for combustion, thereby improving the starting performance at low temperatures. The fuel cell comprises a cell structure in which an anode and a cathode are provided on either side of a solid polymer electrolyte membrane. This cell structure has a power generation plane and at least a part of the generation plane is defined as a local generation area so as to locally generate power. The fuel cell may include a pair of separators between which the cell structure is placed, and a reaction gas passage may be formed between the cell structure and each separator. One of a system for supplying a reaction gas to only a part of the reaction gas passage, and a system for supplying a reaction gas to the entire reaction gas passage is switchably selected.Type: GrantFiled: April 4, 2002Date of Patent: May 29, 2007Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Katsumi Hayashi, Hideo Kato, Yosuke Fujii, Yasushi Kanai
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Patent number: 7201990Abstract: An intermediate plate is interposed between first and second sub-stacks. The intermediate plate has, defined in a surface thereof, an oxygen-containing gas mixing passage interconnecting an oxygen-containing gas outlet in the first sub-stack which is located upstream and an oxygen-containing gas inlet in the second sub-stack which is located downstream. In the first and second sub-stacks, an oxygen-containing gas is supplied from the oxygen-containing gas inlet and discharged to the oxygen-containing gas outlet at all times.Type: GrantFiled: September 17, 2002Date of Patent: April 10, 2007Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Wariishi, Masaharu Suzuki, Hideaki Kikuchi, Narutoshi Sugita, Ichiro Baba, Ken Takahashi, Seiji Sugiura, Yosuke Fujii, Daisuke Wachi
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Publication number: 20070038133Abstract: A blood pressure monitor includes a cuff having an air bag, a main-unit casing in which an inflation/deflation mechanism for inflating/deflating the air bag is provided, a flexible air tube connecting the air bag and the inflation/deflation mechanism, and a retractor unit capable of drawing in the air tube that is drawn out from the main-unit casing into an air tube housing provided in the main-unit casing. With this structure, the blood pressure monitor can be made superior in housing of the air tube connecting the cuff and the main-unit casing.Type: ApplicationFiled: August 11, 2006Publication date: February 15, 2007Applicant: OMRON HEALTHCARE Co., Ltd.Inventors: Hiroshi Kishimoto, Masayuki Fukutsuka, Kenji Eda, Takahide Tanaka, Yosuke Fujii
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Publication number: 20060217440Abstract: A compound (II) is reacted with a compound (III) or a reactive derivative at the carboxyl group thereof to obtain a compound (IV), which is reacted with a mixed acid anhydride of a compound (V) to prepare a compound (I). In recrystallization of the compound (I), temperature for the recrystallization and/or time for the crystal precipitation is controlled to selectively produce A-form crystals, B-form crystals and C-form crystals of the compound (I).Type: ApplicationFiled: March 23, 2004Publication date: September 28, 2006Inventors: Hiroki Omori, Satoshi Hirabayashi, Ariyoshi Kubota, Takeshi Kawakami, Yosuke Fujii, Ikuo Matsumoto, Masato Kitayama, Shunsuke Goto
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Publication number: 20060188766Abstract: A fuel cell system includes a fuel cell having a stack composed of stacked cells that generate electrical power from anode gas and cathode gas; a cell voltage measuring device connected to the cells to measure the voltages of the cells, the cell voltage measuring device outputting a first predetermined value as a measurement value when the voltage of the cell being measured is at or below a detection limit; a stack voltage measuring device connected to the stack that measures the voltage of the stack; and a control unit that restricts the current flowing though the fuel cell when the difference between the sum of the individual voltages of the cells measured by the cell voltage measuring device and the voltage of the stack measured by the stack voltage measuring device exceeds a second predetermined value.Type: ApplicationFiled: February 14, 2006Publication date: August 24, 2006Inventors: Yosuke Fujii, Takahiro Takai
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Patent number: 7090941Abstract: A cell assembly is formed by stacking a first cell and a second cell. In the cell assembly, oxygen-containing gas flow passages are connected in series by an intermediate oxygen-containing gas flow passage, and fuel gas flow passages are connected in series by an intermediate fuel gas flow passage. An additional oxygen-containing gas is supplied to an oxygen-containing gas passage which includes the intermediate oxygen-containing gas flow passage. An additional fuel gas is supplied to a fuel gas passage which includes the intermediate fuel gas flow passage.Type: GrantFiled: September 13, 2002Date of Patent: August 15, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Ichiro Baba, Yosuke Fujii, Ken Takahashi, Daisuke Wachi, Hiromichi Yoshida, Takaki Nakagawa, Yoshinori Wariishi, Masaharu Suzuki, Seiji Sugiura, Narutoshi Sugita, Hideaki Kikuchi
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Publication number: 20060110651Abstract: A power generation cell includes a membrane electrode assembly, and a cathode side metal separator and an anode side metal separator sandwiching the membrane electrode assembly. A seal member covers inner surfaces of inlet through holes. The seal member includes a plurality of flow grooves and a plurality of receivers. The flow grooves guide a fuel gas from the inlet through holes to a fuel gas flow field through an inlet buffer. The receivers directly contact an anode.Type: ApplicationFiled: November 22, 2005Publication date: May 25, 2006Applicant: Honda Motor Co., Ltd.Inventors: Toshiya Wakahoi, Hiroyuki Tanaka, Yosuke Fujii
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Patent number: 7049023Abstract: A fuel cell is provided wherein the production of a separator is easy and a reactant gas channel thereof can be easily arranged. The fuel cell is constituted by clamping an electrolyte membrane electrode assembly provided with an anode and a cathode at opposite positions on both sides of an electrolyte membrane, by a pair of separators via a sealing member. A part of a reactant gas channel formed between the electrolyte membrane electrode assembly and the cathode side separator is formed seamlessly by extended portions of the sealing member.Type: GrantFiled: October 17, 2001Date of Patent: May 23, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yosuke Fujii, Takayuki Ogawa, Hideaki Kikuchi, Masaharu Suzuki
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Publication number: 20060088756Abstract: A fuel cell system includes a fuel cell stack, a gas liquid separator, a first drain channel, and a second drain channel. The gas liquid separator is connected to a fuel gas discharge passage of the fuel cell stack through a fuel gas discharge channel. The first drain channel is connected to the fuel gas discharge passage separately from the fuel gas discharge channel, and connected to the gas liquid separator through a valve unit. The second drain channel chiefly discharges liquid droplets from the gas liquid separator.Type: ApplicationFiled: October 12, 2005Publication date: April 27, 2006Inventors: Masahiko Sato, Yosuke Fujii, Yasunori Kotani, Hideaki Kikuchi
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Patent number: 7018733Abstract: A unit cell has a membrane electrode assembly. The membrane electrode assembly includes a cathode, and an anode, and a solid polymer electrolyte fuel cell interposed between the cathode and the anode. The membrane electrode assembly is interposed between a first separator and a second separator. A thin cooling plate is interposed between the second separator and another first separator. A first coolant flow passage and a second coolant flow passage are formed on both surfaces of the cooling plate. The coolant flows along one surface of the cooling plate, and turns back at an end of the cooling plate to flow along the other surface of the cooling plate.Type: GrantFiled: October 9, 2002Date of Patent: March 28, 2006Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Seiji Sugiura, Masaharu Suzuki, Tetsuya Koido, Yoshinori Wariishi, Yosuke Fujii, Takaki Nakagawa
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Patent number: 6969564Abstract: A cell assembly has reactant gas passages connected in series in first and second unit cells, and oxygen-containing gas inlets, intermediate oxygen-containing gas inlets, oxygen-containing gas outlets, intermediate oxygen-containing gas outlets which are defined in the first and second unit cells. The oxygen-containing gas inlets and the intermediate oxygen-containing gas inlets are disposed upwardly of the oxygen-containing gas outlets and the intermediate oxygen-containing gas outlets. The oxygen-containing gas outlets and the intermediate oxygen-containing gas outlets are disposed at least partly below electric energy generating surfaces of the first and second unit cells.Type: GrantFiled: September 12, 2002Date of Patent: November 29, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoshinori Wariishi, Narutoshi Sugita, Masaharu Suzuki, Seiji Sugiura, Daisuke Wachi, Yosuke Fujii
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Publication number: 20050214627Abstract: A fuel cell is formed by stacking a membrane electrode assembly and separators alternately. Each of the separators includes first and second metal plates. A coolant flow field is formed between the first metal plate of the fuel cell and the second metal plate of the adjacent fuel cell. A folded section is provided around a coolant supply passage by folding the second metal plate. The folded section forms an inlet which enlarges the sectional area of an opening as a fluid passage between the coolant supply passage and the coolant flow field.Type: ApplicationFiled: March 24, 2005Publication date: September 29, 2005Applicant: Honda Motor Co., Ltd.Inventors: Narutoshi Sugita, Teruyuki Ohtani, Shuhei Goto, Yosuke Fujii
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Patent number: 6949920Abstract: A fuel cell system includes a fuel cell. A current density measuring apparatus is provided on a cathode side of the fuel cell. The current density measuring apparatus includes a plurality of Hall elements provided at positions corresponding to measuring positions in an electrode surface. Each of the Hall element is attached to a ferrite core fitted to a pole of a sensor mounting plate. The ferrite core and the Hall element attached to the pole make up a current sensor.Type: GrantFiled: October 27, 2003Date of Patent: September 27, 2005Assignee: Honda Motor Co., Ltd.Inventors: Masahiro Mohri, Yosuke Fujii, Katsumi Hayashi, Toshiya Wakahoi
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Publication number: 20050196655Abstract: A fuel cell system has a fuel cell, a fuel supply device, a gas discharge valve, a voltage detecting device and a control device. The fuel supply device supplies a fuel gas to the fuel cell. The gas discharge valve discharges the fuel gas into an external environment. The voltage detecting device detects an output voltage of the fuel cell. The control device controls a discharging process when a request for starting the fuel cell is given. The discharging process includes introducing the fuel gas from the fuel supply device into a predetermined passage, opening the gas discharge valve and discharging residuals staying in the passage into the external environment. When the control device receives the request and determines that the output voltage has reached a first threshold before the discharging process has not been completed, the control device starts power generation irrespective of completion of the discharging process.Type: ApplicationFiled: March 7, 2005Publication date: September 8, 2005Applicant: Honda Motor Co., Ltd.Inventors: Kenichiro Ueda, Yosuke Fujii, Yoshikazu Murakami, Yuji Matsumoto
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Patent number: 6926985Abstract: A fuel gas passage, an oxygen-containing gas passage, and a coolant passage extend through a fuel cell stack. Each of the fuel gas passage and the oxygen-containing gas passage is formed by serially connecting passages between the first through third fuel cell modules. The fuel gas flows through the fuel gas passage, and the oxygen-containing gas flows through the oxygen-containing gas passage from the first fuel cell module toward the third fuel cell module. The coolant passage is formed by serially connecting passages between the first through third fuel modules. The coolant flows through the coolant passage from the third fuel cell module toward the first fuel cell module. The direction of the flow of the coolant is opposite to the direction of the flows of the fuel gas and the oxygen-containing gas.Type: GrantFiled: March 26, 2003Date of Patent: August 9, 2005Assignee: Honda Giken Kabushiki KaishaInventors: Yoshinori Wariishi, Hideaki Kikuchi, Masaharu Suzuki, Masaru Oda, Yosuke Fujii, Ichiro Baba
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Patent number: 6844093Abstract: There is provided a fuel cell stacking body that allows a connector unit to be used even when the thickness of the fuel cells has been made thinner. A fuel cell stacking body is provided with stacked fuel cells that each have a membrane electrode assembly and separators that sandwich this membrane electrode assembly. The fuel cells generate electricity when fuel gas and oxidizer gas are supplied. The separators of the fuel cells are provided with terminals that enable voltage to be measured by being connected to connectors that are connected an external voltage measuring apparatus. One of the voltage measuring sections is formed at a different position, with respect to the stacking direction, from the voltage measuring section that is adjacent in the stacking direction. The spacing between terminals that are at the same position with respect to the stacking direction is kept at a distance that allows a connector unit formed by grouping together a plurality of connectors to be inserted.Type: GrantFiled: September 26, 2002Date of Patent: January 18, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hideaki Kikuchi, Masahiko Sato, Toshiaki Ariyoshi, Yosuke Fujii, Daisuke Wachi
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Publication number: 20040253499Abstract: First and second fuel cell stacks having a simple and compact structure are connected in parallel to each other to enable ensuring a desired electric power generating performance.Type: ApplicationFiled: June 7, 2004Publication date: December 16, 2004Applicant: HONDA MOTOR CO., LTD.Inventors: Masahiko Sato, Hideaki Kikuchi, Yosuke Fujii
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Patent number: D532518Type: GrantFiled: March 29, 2005Date of Patent: November 21, 2006Assignee: Omron Healthcare Co., Ltd.Inventors: Kenji Eda, Takahide Tanaka, Yosuke Fujii, Tadashi Koike, Hiroya Nakanishi, So Noguchi, Kiyoshi Motomura
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Patent number: D541941Type: GrantFiled: January 27, 2006Date of Patent: May 1, 2007Assignee: Omron Healthcare Co., Ltd.Inventors: Takefumi Nakanishi, Kenji Eda, Takahide Tanaka, Yosuke Fujii, Tadashi Koike, So Noguchi, Shuji Tsuruta, Masashi Kitamura, Izumi Hachimaru