Patents by Inventor Yasunari Arai

Yasunari Arai 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: 8835071
    Abstract: An end plate is joined to a fuel cell stack. A first piping unit and a second piping unit are attached to the end plate. The first piping unit has a first attachment base, to which a fuel gas supply pipe, a first oxidation off-gas discharge pipe, and a coolant discharge pipe are coupled. The second piping unit has a second attachment base, to which an oxidation gas supply pipe, a coolant supply pipe, and a discharge pipe are coupled. The discharge pipe is joined to a discharge cylinder coupled to the first oxidation off-gas discharge pipe. The oxidation gas supply pipe and the coolant supply pipe are integrated with each other. Also, the first oxidation off-gas discharge pipe and the coolant discharge pipe are integrated with each other.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: September 16, 2014
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Atsushi Imamura, Hiroshi Koide, Yasunari Arai
  • Patent number: 8697298
    Abstract: A first rectangular pipe is connected along a path of an oxidation gas supply pipe that supplies an oxidation gas from a pump to an oxidant pole of a fuel cell. A second rectangular pipe is connected to an oxidation off-gas pipe connected to an outlet of the oxidant pole. A lower surface of the first rectangular pipe is contacted with an upper surface of the second rectangular pipe. A connecting path is provided to the contact surface, and a vapor permeable membrane is disposed at the connecting path. An upper surface of a third rectangular pipe is provided in surface contact with a lower surface of the second rectangular pipe, the third rectangular pipe being provided to a coolant out-pipe connected to a cooling jacket of the fuel cell. Generated water in the second pipe is heated and evaporated by a coolant heated in the third rectangular pipe. The water vapor then permeates the vapor permeable membrane, and is directed inside the first rectangular pipe so as to humidify the oxidation gas.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: April 15, 2014
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Koji Kume, Akishi Morita, Yasunari Arai
  • Patent number: 8685587
    Abstract: A discharge port is located at a lower portion of the case of a gas-liquid separator. A discharge valve is located at the discharge port. A water retaining portion is located at the bottom of the case. The water retaining portion is located at a position lower than the discharge valve. An upward inclination surface is formed on the bottom of the water retaining portion. The upward inclination surface is inclined upward toward the discharge valve. A downward inclination surface is formed on the bottom of the water retaining portion. The downward inclination surface is inclined downward toward the upward inclination surface. A cover portion is located in an upper portion of the water retaining portion. The cover portion defines a gas passage in an upper portion of the water retaining portion. The gas passage is open at a portion closer to the inlet and connected to the discharge valve.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: April 1, 2014
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Junko Ohira, Yasunari Arai, Akishi Morita, Nobuhiko Nakagaki, Takeshi Asai, Hiroyuki Sekine
  • Patent number: 8308847
    Abstract: Provided is a filter for removing a sulfur-containing-gas (1), which removes the sulfur-containing-gas by being brought into contact with the sulfur-containing-gas in a gas flow path, the filter including a former filter (11) disposed on an upstream side of the gas flow path, and a latter filter (12) disposed on a downstream side of the gas flow path, wherein the former filter (11) includes a first material for removing a sulfur-containing-gas, the first material including a porous support, and iodine which is supported on the porous support, and is produced by catalytic pyrolysis of ammonium iodide at a thermal decomposition ratio of 80% or more by use of the porous support as a catalyst, and the latter filter (12) includes a second material for removing a sulfur-containing-gas, the second material including an activated carbon fiber, and an alkali component which is supported on the activated carbon fiber.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: November 13, 2012
    Assignee: Toyota Boshoku Kabushiki Kaisha
    Inventors: Kazuhiro Fukumoto, Minoru Takahara, Kenichirou Suzuki, Nobuhiko Nakagaki, Yasunari Arai, Minoru Honda
  • Publication number: 20110091784
    Abstract: An end plate is joined to a fuel cell stack. A first piping unit and a second piping unit are attached to the end plate. The first piping unit has a first attachment base, to which a fuel gas supply pipe, a first oxidation off-gas discharge pipe, and a coolant discharge pipe are coupled. The second piping unit has a second attachment base, to which an oxidation gas supply pipe, a coolant supply pipe, and a discharge pipe are coupled. The discharge pipe is joined to a discharge cylinder coupled to the first oxidation off-gas discharge pipe. The oxidation gas supply pipe and the coolant supply pipe are integrated with each other. Also, the first oxidation off-gas discharge pipe and the coolant discharge pipe are integrated with each other.
    Type: Application
    Filed: September 28, 2010
    Publication date: April 21, 2011
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Atsushi IMAMURA, Hiroshi KOIDE, Yasunari ARAI
  • Patent number: 7837870
    Abstract: An ion-removing apparatus includes a housing, a first ion-removing unit and a second ion-removing unit. The housing includes an inlet port, a liquid discharge port and a gas discharge port. The first ion-removing unit is disposed within the housing, so that the fluid that has entered the housing via the inlet port flows through the first ion-removing unit. The first ion-removing unit serves to remove a first ion, such anions, contained in the fluid. The second ion-removing unit is disposed within the housing, so that the fluid that has flown though the first ion-removing unit flows through the first ion-removing unit. The second ion-removing unit serves to remove a second ion, such as cations contained in the fluid. The liquid contained in the fluid that has flown through the second ion-removing unit is discharged from the liquid discharge port. The gas contained in the fluid that has flown through the second ion-removing unit is discharged from the gas discharge port.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: November 23, 2010
    Assignees: Toyota Boshoku Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasunari Arai, Akishi Morita, Nobuhiko Nakagaki, Hiroyuki Sekine
  • Publication number: 20100028740
    Abstract: A first rectangular pipe is connected along a path of an oxidation gas supply pipe that supplies an oxidation gas from a pump to an oxidant pole of a fuel cell. A second rectangular pipe is connected to an oxidation off-gas pipe connected to an outlet of the oxidant pole. A lower surface of the first rectangular pipe is contacted with an upper surface of the second rectangular pipe. A connecting path is provided to the contact surface, and a vapor permeable membrane is disposed at the connecting path. An upper surface of a third rectangular pipe is provided in surface contact with a lower surface of the second rectangular pipe, the third rectangular pipe being provided to a coolant out-pipe connected to a cooling jacket of the fuel cell. Generated water in the second pipe is heated and evaporated by a coolant heated in the third rectangular pipe. The water vapor then permeates the vapor permeable membrane, and is directed inside the first rectangular pipe so as to humidify the oxidation gas.
    Type: Application
    Filed: July 15, 2009
    Publication date: February 4, 2010
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Koji KUME, Akishi MORITA, Yasunari ARAI
  • Publication number: 20100024642
    Abstract: Provided is a filter for removing a sulfur-containing-gas (1), which removes the sulfur-containing-gas by being brought into contact with the sulfur-containing-gas in a gas flow path, the filter comprising a former filter (11) disposed on an upstream side of the gas flow path, and a latter filter (12) disposed on a downstream side of the gas flow path, wherein the former filter (11) comprises a first material for removing a sulfur-containing-gas, the first material comprising a porous support, and iodine which is supported on the porous support, and is produced by catalytic pyrolysis of ammonium iodide at a thermal decomposition ratio of 80% or more by use of the porous support as a catalyst, and the latter filter (12) comprises a second material for removing a sulfur-containing-gas, the second material comprising an activated carbon fiber, and an alkali component which is supported on the activated carbon fiber.
    Type: Application
    Filed: January 24, 2008
    Publication date: February 4, 2010
    Applicant: Toyota Boshoku Kabushiki Kaisha
    Inventors: Kazuhiro Fukumoto, Minoru Takahara, Kenichirou Suzuki, Nobuhiko Nakagaki, Yasunari Arai, Minoru Honda
  • Publication number: 20090162730
    Abstract: A discharge port is located at a lower portion of the case of a gas-liquid separator. A discharge valve is located at the discharge port. A water retaining portion is located at the bottom of the case. The water retaining portion is located at a position lower than the discharge valve. An upward inclination surface is formed on the bottom of the water retaining portion. The upward inclination surface is inclined upward toward the discharge valve. A downward inclination surface is formed on the bottom of the water retaining portion. The downward inclination surface is inclined downward toward the upward inclination surface. A cover portion is located in an upper portion of the water retaining portion. The cover portion defines a gas passage in an upper portion of the water retaining portion. The gas passage is open at a portion closer to the inlet and connected to the discharge valve.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 25, 2009
    Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Junko OHIRA, Yasunari ARAI, Akishi MORITA, Nobuhiko NAKAGAKI, Takeshi ASAI, Hiroyuki SEKINE
  • Patent number: 7520921
    Abstract: A gas-removing device serves to remove impurity gases from the air supplied to a fuel cell via an air supply system. The gas-removing device includes a porous material and an alternate adsorption membrane. The porous material has micropores formed therein in order to absorb impurity gas particles contained in the air. The alternate adsorption membrane is formed on the inner walls of the micropores of the porous material in order to further adsorb and retain at least one type of impurity gas particles from among the impurity gas particles absorbed by the porous material. The alternate adsorption membrane includes at least one positively charged layer and at least one negatively charged layer laid alternately to one another.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: April 21, 2009
    Assignees: Toyota Boshoku Kabushiki Kaisha, SNT Co., Ltd.
    Inventors: Yasunari Arai, Akishi Morita, Nobuhiko Nakagaki
  • Publication number: 20080011674
    Abstract: Fibers usable for an ion exchange filter includes a base material and ion exchange resin particles. The base material is made of a hydrophobic resin. The ion exchange resin particles are embedded within the base material At least some of the ion exchange resin particles are exposed on a surface of the base material.
    Type: Application
    Filed: July 12, 2007
    Publication date: January 17, 2008
    Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobuhiko Nakagaki, Yasunari Arai, Akishi Morita, Norio Yamagishi, Hiroyuki Sekine
  • Publication number: 20070157815
    Abstract: A gas-removing device serves to remove impurity gases from the air supplied to a fuel cell via an air supply system. The gas-removing device includes a porous material and an alternate adsorption membrane. The porous material has micropores formed therein in order to absorb impurity gas particles contained in the air. The alternate adsorption membrane is formed on the inner walls of the micropores of the porous material in order to further adsorb and retain at least one type of impurity gas particles from among the impurity gas particles absorbed by the porous material. The alternate adsorption membrane includes at least one positively charged layer and at least one negatively charged layer laid alternately to one another.
    Type: Application
    Filed: January 14, 2005
    Publication date: July 12, 2007
    Inventors: Yasunari Arai, Akishi Morita, Nobuhiko Nakagaki
  • Publication number: 20070000791
    Abstract: An ion-removing apparatus includes a housing, a first ion-removing unit and a second ion-removing unit. The housing includes an inlet port, a liquid discharge port and a gas discharge port. The first ion-removing unit is disposed within the housing, so that the fluid that has entered the housing via the inlet port flows through the first ion-removing unit. The first ion-removing unit serves to remove a first ion, such anions, contained in the fluid. The second ion-removing unit is disposed within the housing, so that the fluid that has flown though the first ion-removing unit flows through the first ion-removing unit. The second ion-removing unit serves to remove a second ion, such as cations contained in the fluid. The liquid contained in the fluid that has flown through the second ion-removing unit is discharged from the liquid discharge port. The gas contained in the fluid that has flown through the second ion-removing unit is discharged from the gas discharge port.
    Type: Application
    Filed: June 15, 2006
    Publication date: January 4, 2007
    Inventors: Yasunari Arai, Akishi Morita, Nobuhiko Nakagaki, Hiroyuki Sekine
  • Patent number: 5851250
    Abstract: A filter element for an air cleaner including a filter medium which has a plurality of basic filter units and is integrally formed of a porous sintered material produced by sintering powdered synthetic resin.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: December 22, 1998
    Assignee: Toyoda Boshoku Corporation & Denso Corporation
    Inventors: Hiromichi Sugie, Tsuyoshi Minari, Yasunari Arai, Yukihisa Horikoh, Kouji Kume, Hirotsugu Kojima
  • Patent number: 5755844
    Abstract: A resin-made air cleaner includes a hollow resin-made housing, a tubular element accommodated in the housing, a tubular projection, a gasket fitted around the tubular projection, and disposed between the tubular element and the tubular projection, a stopper for inhibiting the gasket from moving. The tubular projection is disposed on at least one of opposite end surfaces of the housing so as to project toward the inside of the housing. The stopper is disposed on the projection and/or the opposite end surfaces of the housing, on which the projection is disposed. This arrangement not only enables the increase of the resin content of the air cleaner, but also inhibits the gasket from coming off from the projection when the element is disassembled.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: May 26, 1998
    Assignees: Toyoda Boshoku Corporation, Nippondenso Co., Ltd.
    Inventors: Yasunari Arai, Yoshiyuki Murao, Yasuhiro Okazaki, Yukihisa Horikou, Tsuyoshi Minari, Kouji Kume
  • Patent number: 5206986
    Abstract: An electronic circuit package which includes first and second conductive metal members and a circuit board held between the first and second metal members and having a cutout in which an electronic circuit part is accommodated and a process of producing such electronic circuit package are disclosed. With the electronic circuit package, deterioration of a high speed characteristic of an electronic circuit part accommodated in the package is minimized, and accordingly, when the electronic circuit package is applied to an IC for very high speed optical communications for use with an optical repeater or the like, a very high speed system can be realized. By assembling the components in accordance with a predetermined order, facility in process of production and improvement in reliability of products are attained.
    Type: Grant
    Filed: June 23, 1992
    Date of Patent: May 4, 1993
    Assignee: Fujitsu Limited
    Inventors: Yasunari Arai, Hiroshi Hamano, Izumi Amemiya, Takuji Yamamoto, Takeshi Ihara
  • Patent number: 5150280
    Abstract: An electronic circuit package which includes first and second conductive metal members and a circuit board held between the first and second metal members and having a cutout in which an electronic circuit part is accommodated and a process of producing such electronic circuit package are disclosed. With the electronic circuit package, deterioration of a high speed characteristic of an electronic circuit part accommodated in the package is minimized, and accordingly, when the electronic circuit package is applied to an IC for very high speed optical communications for use with an optical repeater or the like, a very high speed system can be realized. By assembling the components in accordance with a predetermined order, facility in process of production and improvement in reliability of products are attained.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: September 22, 1992
    Assignee: Fujitsu Limited
    Inventors: Yasunari Arai, Hiroshi Hamano, Izumi Amemiya, Takuji Yamamoto, Takeshi Ihara
  • Patent number: 5113151
    Abstract: Disclosed is an equalizing and amplifying circuit in an optical signal receiving apparatus comprising a preamplifier circuit having an input terminal connected to the output of a light receiving element. The preamplifier circuit amplifies the electrical signal from the light receiving element and outputs an amplified signal. An automatic gain control circuit is connected to the output of the preamplifier circuit. The preamplifier circuit comprises a transistor having a common-base, a current source connected to the emitter of the transistor for supplying a bias current to the transistor, and a load resistor connected to the collector of the transistor. The emitter of the transistor is connected to the input terminal, and the collector of the transistor is connected to the output terminal. A negative influence caused by mounting the circuit on a package is avoided and the circuit operates stably in a high frequency range.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: May 12, 1992
    Assignee: Fujitsu Limited
    Inventors: Takuji Yamamoto, Hiroshi Hamano, Izumi Amemiya, Yasunari Arai, Takeshi Ihara
  • Patent number: 5066877
    Abstract: A data delay circuit includes a first transistor, and a second transistor having a base, an emitter and a collector. Input data is applied to the bases of the first and second transistors. A constant-current source is coupled between the emitters of the first and second transistors and a negative power source. A capacitor is connected between the collector of the first transistor and the collector of the second transistor. The data delay circuit further includes a third transistor and a fourth transistor. The emitters of the third and fourth transistors are connected to the collectors of the first and second transistors, respectively. The bases of the third and fourth transistors are provided with control data having a polarity opposite to that of the input data and having an adjusted amplitude level corresponding to a desired delay time to be given the input data. First and second load resistors are respectively coupled to the collectors of the third and fourth transistors through a positive power source.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: November 19, 1991
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Hamano, Izumi Amemiya, Takuji Yamamoto, Yasunari Arai, Takeshi Ihara
  • Patent number: 4884278
    Abstract: Disclosed is a semiconductor laser modulation control system, and a method thereof. The system includes a drive circuit (1) for supplying a drive current to a semiconductor laser (2) in accordance with an input data, to modulate the input data into an optical signal of the semiconductor laser (2). The optical signal is either at a high intensity state or a low intensity state in accordance with an input data of "1" or "0", in respective time slots of the input data. The system further includes a duty ratio conversion circuit (3) for converting the duty ratio of the input data in such a way that the low intensity state of the optical signal is returned to the high intensity state within each time slot of the input data, whereby the relaxation oscillation is suppressed.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: November 28, 1989
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Nishimoto, Takashi Touge, Tadashi Okiyama, Naoki Kuwata, Yasunari Arai