Patents by Inventor Hayato Kaji
Hayato Kaji 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).
-
Patent number: 11971104Abstract: A grommet G according to the present invention is provided with, on the outer side of a second flexible portion 22, a padding portion 4. With this, of a pressing force F which acts from the cylindrical base part 1 side to the seal portion 3 side, a panel parallel component F1 parallel to a dash panel DP is hardly transmitted. On the other hand, a panel vertical component F2 vertical to the dash panel DP is easily transmitted. Consequently, the panel vertical component F2 becomes relatively large, and even if the seal portion 3 is brought into contact with the dash panel DP by acting the pressing force F from the oblique direction, the rolling-up caused by the occurrence of the inclination of the seal portion 3 can be suppressed.Type: GrantFiled: May 27, 2022Date of Patent: April 30, 2024Assignees: KINUGAWA RUBBER IND. CO., LTD., HONDA MOTOR CO., LTD.Inventors: Yasuhisa Kaji, Hayato Takahashi, Hiroko Katayama, Yuya Hamamoto
-
Patent number: 11081713Abstract: A voltage is applied between an anode and a cathode in a fuel cell. The voltage is increased to a predetermined upper limit, and then decreased to a predetermined lower limit. The voltage increase and decrease are repeated a predetermined number of times. The voltage is applied to the fuel cell while supplying a hydrogen-containing gas to an anode and supplying an inert gas to a cathode.Type: GrantFiled: March 27, 2019Date of Patent: August 3, 2021Assignee: HONDA MOTOR CO., LTD.Inventors: Shohei Toyota, Hiromichi Yoshida, Hayato Kaji
-
Publication number: 20190305347Abstract: A voltage is applied between an anode and a cathode in a fuel cell. The voltage is increased to a predetermined upper limit, and then decreased to a predetermined lower limit. The voltage increase and decrease are repeated a predetermined number of times.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Inventors: Shohei Toyota, Hiromichi Yoshida, Hayato Kaji
-
Patent number: 9160016Abstract: A fuel cell includes a membrane-electrode assembly and a separator. The membrane-electrode assembly has an electrolyte and a pair of electrodes that are disposed on respective sides of the electrolyte. The membrane-electrode assembly and the separator are stacked in a stacking direction. A reaction surface of the membrane-electrode assembly is in a vertical direction along a direction of gravity and has a shape having a longer dimension in a horizontal direction. The fuel cell is provided with a reactant gas passage to allow a reactant gas to flow along a longitudinal direction of the reaction surface. The reactant gas is an oxidant gas or a fuel gas. A drain channel to allow product water from the reactant gas passage to be drained away is disposed between the membrane-electrode assembly and the separator and under the reaction surface in the direction of gravity.Type: GrantFiled: January 10, 2012Date of Patent: October 13, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Kentaro Ishida, Akihiro Matsui, Narutoshi Sugita, Hayato Kaji
-
Publication number: 20120251900Abstract: A fuel cell system is equipped with an expander which is driven by an off-gas exhausted from an oxidant eject path, and which transmits motive power to a compressor, a bypass route in the oxidant eject path which bypasses a humidifier, a flow control valve which changes an opening degree of the bypass route, a voltage sensor which detects an output voltage of the fuel cell stack, a current sensor which detects an output current of the fuel cell stack, and a bypass controlling member which changes a bypass ratio which is a ratio of a magnitude of a flow rate of the off-gas circulating the bypass route with respect to an overall flow rate of the off-gas ejected from the fuel cell stack to the oxidant eject path by the flow control valve according to the output power of the fuel cell stack.Type: ApplicationFiled: March 29, 2012Publication date: October 4, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Tatsuya SUGAWARA, Tomoki KOBAYASHI, Motohiro SUZUKI, Takuma KANAZAWA, Takuya WAKABAYASHI, Hayato KAJI
-
Publication number: 20120178004Abstract: A fuel cell includes a membrane-electrode assembly and a separator. The membrane-electrode assembly has an electrolyte and a pair of electrodes that are disposed on respective sides of the electrolyte. The membrane-electrode assembly and the separator are stacked in a stacking direction. A reaction surface of the membrane-electrode assembly is in a vertical direction along a direction of gravity and has a shape having a longer dimension in a horizontal direction. The fuel cell is provided with a reactant gas passage to allow a reactant gas to flow along a longitudinal direction of the reaction surface. The reactant gas is an oxidant gas or a fuel gas. A drain channel to allow product water from the reactant gas passage to be drained away is disposed between the membrane-electrode assembly and the separator and under the reaction surface in the direction of gravity.Type: ApplicationFiled: January 10, 2012Publication date: July 12, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Kentaro Ishida, Akihiro Matsui, Narutoshi Sugita, Hayato Kaji
-
Patent number: 7722977Abstract: A terminal plate, an insulating plate, and an end plate are stacked on a stack body. The terminal plate has current collectors at least at lower portions of an oxygen-containing gas supply passage, a coolant supply passage, a fuel gas discharge passage, a fuel gas supply passage, a coolant discharge passage, and an oxygen-containing gas discharge passage. The current collectors contact the water generated in the reaction or a coolant for collecting electricity.Type: GrantFiled: August 5, 2005Date of Patent: May 25, 2010Assignee: Honda Motor Co., Ltd.Inventors: Masahiko Sato, Takahiro Takai, Makoto Tsuji, Masao Utsunomiya, Hayato Kaji, Shuhei Goto, Satoru Terada
-
Patent number: 7544433Abstract: The present invention provides an electrode structure for polymer electrolyte fuel cells, inexpensive, and exhibiting excellent power production capacity and durability even under high temperature/low humidity conditions, and also provides a polymer electrolyte fuel cell which incorporates the same electrode structure. The present invention also provides an electrical device and transportation device, each incorporating the same polymer electrolyte fuel cell. The electrode structure comprises a pair of electrode catalyst layers 1,1, each containing a catalyst supported by carbon particles, and polymer electrolyte membrane 2 placed between these electrode catalyst layers 1,1. The polymer electrolyte membrane 2 is of a sulfonated polyarylene composed of 0.5 to 100% by mol of the first repeating unit represented by the general formula (1) and 0 to 99.Type: GrantFiled: November 17, 2003Date of Patent: June 9, 2009Assignee: Honda Motor Co., Ltd.Inventors: Hiroshi Sohma, Masaru Iguchi, Nagayuki Kanaoka, Hayato Kaji, Hiroshi Morikawa, Naoki Mitsuta
-
Patent number: 7232627Abstract: An electrode for a solid polymer fuel cell includes a gas diffusion layer, an electrode catalyst layer disposed between a solid polymer membrane of the fuel cell and the gas diffusion layer, and a water-holding layer disposed between the gas diffusion layer and the electrode catalyst layer. Under high-relative humidity conditions of reaction gases, flooding can be prevented because the electrode catalyst layer is made porous, while under low-relative humidity conditions of reaction gases, sufficient water contents can be stably provided thanks to the water-holding layer so that proton conductivity of the solid polymer membrane can be maintained appropriately. Consequently, high-performance and high-durability electrode and membrane electrode assembly for a solid polymer fuel cell can be provided such that the performance and the durability thereof are not affected by change in relative humidity in reactant gases supplied to the solid polymer fuel cell.Type: GrantFiled: November 7, 2003Date of Patent: June 19, 2007Assignee: Honda Motor Co., Ltd.Inventors: Kaoru Fukuda, Masaki Tani, Shigeru Inai, Hayato Kaji, Chikara Iwasawa, Shinya Watanabe, Katsuhiko Kohyama, Hiroshi Shinkai, Takeshi Muro
-
Publication number: 20060068269Abstract: A water holding layer having a carbon-based material and a water holding material is arranged on an anode diffusion layer. The water holding material is contained at 5 to 20 wt % of total weight of the water holding material and an electron conductive material. Alternatively, carbon particles having water absorption amount at saturated water vapor pressure at 60° C. is not less than 150 cc/g are contained in the anode diffusion layer. Water absorption ratio of the anode diffusion layer at 60° C. is in a range of 40 to 85%, a differential pressure is in a range of 60 to 120 mmaq, and a ratio of quantity of electric charge of catalytic material of the cathode catalytic layer existing in proton conductive passage from the polymer electrolyte membrane is not less than 15% of the quantity of electric charge of all the catalytic material existing in the cathode catalytic layer. Furthermore, a layer including carbon particles having water absorption amount at saturated water vapor pressure at 60° C.Type: ApplicationFiled: October 21, 2003Publication date: March 30, 2006Inventors: Kaoru Fukuda, Masaki Tani, Hayato Kaji, Shigeru Inai, Takeshi Muro, Shinya Watanabe
-
Publication number: 20060040159Abstract: A terminal plate, an insulating plate, and an end plate are stacked on a stack body. The terminal plate has current collectors at least at lower portions of an oxygen-containing gas supply passage, a coolant supply passage, a fuel gas discharge passage, a fuel gas supply passage, a coolant discharge passage, and an oxygen-containing gas discharge passage. The current collectors contact the water generated in the reaction or a coolant for collecting electricity.Type: ApplicationFiled: August 5, 2005Publication date: February 23, 2006Applicant: Honda Motor Co., Ltd.,Inventors: Masahiko Sato, Takahiro Takai, Makoto Tsuji, Masao Utsunomiya, Hayato Kaji, Shuhei Goto, Satoru Terada
-
Patent number: 6847518Abstract: A membrane electrode assembly for a polymer electrolyte fuel cell has a polymer electrolyte membrane, an anode, and a cathode having a catalytic layer and a diffusion layer. The alloy catalyst contains ruthenium in the anode diffusion layer. The assembly has less loss of efficiency, particularly when operated at high potentials.Type: GrantFiled: December 2, 2003Date of Patent: January 25, 2005Assignees: Honda Motor Co., Ltd., Tanaka Kikinzoku Kogyo K.K.Inventors: Kaoru Fukuda, Masaki Tani, Hayato Kaji, Shigeru Inai, Takeshi Muro, Shinya Watanabe, Tomoyuki Tada, Masahiko Inoue
-
Publication number: 20040197632Abstract: The present invention provides an electrode structure for polymer electrolyte fuel cells, inexpensive, and exhibiting excellent power production capacity and durability even under high temperature/low humidity conditions, and also provides a polymer electrolyte fuel cell which incorporates the same electrode structure. The present invention also provides an electrical device and transportation device, each incorporating the same polymer electrolyte fuel cell. The electrode structure comprises a pair of electrode catalyst layers 1,1, each containing a catalyst supported by carbon particles, and polymer electrolyte membrane 2 placed between these electrode catalyst layers 1,1. The polymer electrolyte membrane 2 is of a sulfonated polyarylene composed of 0.5 to 100% by mol of the first repeating unit represented by the general formula (1) and 0 to 99.Type: ApplicationFiled: November 17, 2003Publication date: October 7, 2004Inventors: Hiroshi Sohma, Masaru Iguchi, Nagayuki Kanaoka, Hayato Kaji, Hiroshi Morikawa, Naoki Mitsuta
-
Publication number: 20040136143Abstract: A membrane electrode assembly for a polymer electrolyte fuel cell has a polymer electrolyte membrane, an anode, and a cathode having a catalytic layer and a diffusion layer. The alloy catalyst contains ruthenium in the anode diffusion layer. The assembly has less loss of efficiency, particularly when operated at high potentials.Type: ApplicationFiled: December 2, 2003Publication date: July 15, 2004Inventors: Kaoru Fukuda, Masaki Tani, Hayato Kaji, Shigeru Inai, Takeshi Muro, Shinya Watanabe, Tomoyuki Tada, Masahiko Inoue
-
Publication number: 20040115517Abstract: An electrode for a solid polymer fuel cell includes a gas diffusion layer, an electrode catalyst layer disposed between a solid polymer membrane of the fuel cell and the gas diffusion layer, and a water-holding layer disposed between the gas diffusion layer and the electrode catalyst layer. Under high-relative humidity conditions of reaction gases, flooding can be prevented because the electrode catalyst layer is made porous, while under low-relative humidity conditions of reaction gases, sufficient water contents can be stably provided thanks to the water-holding layer so that proton conductivity of the solid polymer membrane can be maintained appropriately. Consequently, high-performance and high-durability electrode and membrane electrode assembly for a solid polymer fuel cell can be provided such that the performance and the durability thereof are not affected by change in relative humidity in reactant gases supplied to the solid polymer fuel cell.Type: ApplicationFiled: November 7, 2003Publication date: June 17, 2004Inventors: Kaoru Fukuda, Masaki Tani, Shigeru Inai, Hayato Kaji, Chikara Iwasawa, Shinya Watanabe, Katsuhiko Kohyama, Hiroshi Shinkai, Takeshi Muro