Patents by Inventor Yuji Mukai

Yuji Mukai 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).

  • Publication number: 20040115494
    Abstract: A hydrogen generator comprises a burner for generating a combustion gas, a reformer provided around the burner to generate a reformed gas containing hydrogen by a steam reforming reaction based on a feed material comprising a compound containing at least carbon and hydrogen and a steam, using heat transmission from a combustion gas generated by the burner, and an evaporator having an inner tube provided around the burner, an outer tube provided around the inner tube, and a bottom plate that closes a lower portion of a tubular space formed between the inner tube and the outer tube, the evaporator being configured to evaporate water supplied to the tubular space to generate a steam to be supplied to the reformer, wherein a water absorbing member having a water absorbing capability is provided in the tubular space.
    Type: Application
    Filed: October 9, 2003
    Publication date: June 17, 2004
    Inventors: Yoshio Tamura, Yuji Mukai, Akira Maenishi, Tomonori Asou
  • Publication number: 20040101721
    Abstract: A fuel cell system comprising: a reforming section; a feedstock supply section for the reforming section; a water supply section for the reforming section; a fuel cell; a burner for the reforming section; an air supply section for the burner; a fuel supply section for the burner; a fuel supply conduit for supplying the fuel and an off-gas from the fuel cell to the burner; and a flame trap section provided to the fuel supply conduit, wherein heating means for heating the flame trap section is further provided in order to stop a backfire without clogging the fuel supply conduit.
    Type: Application
    Filed: April 1, 2003
    Publication date: May 27, 2004
    Inventors: Yutaka Yoshida, Tomonori Asou, Akira Maenishi, Takeshi Tomizawa, Yuji Mukai, Kunihiro Ukai
  • Publication number: 20040043262
    Abstract: To provide a hydrogen generation system with which thermal efficiency increases, the CO level in a reformed gas stabilizes, and a supply amount of the reformed gas stabilizes, and a fuel cell system having the same.
    Type: Application
    Filed: December 23, 2002
    Publication date: March 4, 2004
    Inventors: Tomonori Asou, Akira Maenishi, Yutaka Yoshida, Kunihiro Ukai, Yuji Mukai
  • Publication number: 20040037761
    Abstract: A hydrogen generating part is provided for reacting water and a raw material composed of carbon and hydrogen atoms to generate hydrogen gas, a raw material supply part is provided for supplying a raw material to the hydrogen generating part, a water supply part is provided for supplying water to the hydrogen generating part, a catalyst combustion part is provided, an air supply part is provided for supplying air to the catalyst combustion part, a path switching part is provided for switching raw material supply paths between the raw material supply part and the hydrogen generating part, a bypass path is provided for supplying a raw material to the catalyst combustion part from the path switching part, and a combustion gas path is provided for supplying combustion gas after the catalyst combustion part to the hydrogen generating part. The control part switches the path switching part, and the inside of the hydrogen generating part is replaced with combustion gas after the catalyst combustion part.
    Type: Application
    Filed: June 6, 2003
    Publication date: February 26, 2004
    Inventors: Akira Maenishi, Tomonori Asou, Yuji Mukai, Masataka Ozeki, Akinari Nakamura, Kunihiro Ukai, Kiyoshi Taguchi, Takeshi Tomizawa, Seiji Fujihara
  • Publication number: 20030129555
    Abstract: To provide a burner for a hydrogen generation system having an excellent combustion stability which can be achieved at low costs, and a hydrogen generation system having such a burner.
    Type: Application
    Filed: December 23, 2002
    Publication date: July 10, 2003
    Inventors: Yuji Mukai, Akira Maenishi, Tomonori Asou, Yutaka Yoshida
  • Patent number: 6083459
    Abstract: The present invention provides a compact-sized reservoir with small power consumption. It suppresses possible oxidation of articles and growths of putrefactious aerobic organisms such as bacteria, fungi and the like, by storing the articles under an atmosphere of reduced oxygen concentration created by an oxygen pump device which makes use of an oxygen ion-conductive film. In a case of storing foods, the disclosed reservoir makes their long-term storing possible. The reservoir in accordance with the present invention uses an oxygen pump device provided with an oxygen ion-conductive electrolyte film and a pair of electrodes formed on the both surfaces thereof.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: July 4, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuji Mukai, Yasuhito Takahashi
  • Patent number: 5766342
    Abstract: The method for forming a silicon film of this invention includes the steps of introducing a compound containing silicon and chlorine and being in a liquid form under normal pressure and at an ordinary temperature into a reaction chamber, and spraying the compound in the liquid form in a fine particle state to a surface of a substrate supported in the reaction chamber, and decomposing the compound in the fine particle state by energy applied from outside of the reaction chamber, and depositing a silicon film on the substrate supported in the reaction chamber.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: June 16, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Munehiro Shibuya, Masatoshi Kitagawa, Yuji Mukai, Takashi Hirao, Akihisa Yoshida
  • Patent number: 4936561
    Abstract: An apparatus for adjusting a diameter of a folding drum in a rotary press includes essentially, bands, slide bases, screw rods, sun gears, a differential device and mechanism for operating the differential device. The bases, formed with internal threads, support the bands. The screw rods, fitted in the internal threads, have pinion gears. The sun gears are concentric with the folding drum, mesh with the pinion gears and are rotatable with respect to the folding drum. The operating mechanism changes phases of the sun gears with respect to the folding drum. Then, the screw rods rotate, and the bands expand and contract, thus adjusting the diameter of the folding drum.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: June 26, 1990
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventor: Yuji Mukai
  • Patent number: 4722195
    Abstract: Disclosed is a heat pump comprising a main circuit containing a mixture of non-azeotropic refrigerants, the main circuit including a compressor for pressurizing the mixture, a first heat exchanger operating as a heat sink, a second heat exchanger operating as a heat source, and an expansion device connected between the first and second heat exchangers. A portion of the mixture is supplied through a first feed line from a first junction between the expansion valve and the first heat exchanger and vaporized before being fed to a rectifier where it coacts with liquid refrigerant to cause separation of higher pressure refrigerant of the mixture from the lower pressure refrigerant. The separated higher pressure refrigerant is stored in a reservoir in liquid phase and an overflowed portion of the liquid is returned to the rectifier as said coacting liquid.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: February 2, 1988
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeo Suzuki, Yuji Yoshida, Kazuo Nakatani, Yuji Mukai
  • Patent number: 4679403
    Abstract: A heat pump apparatus is provided with a multiple-constituent refrigerant mixture which includes a major constituent refrigerant which is above 50% by weight of total refrigerant enclosed in the refrigerating circuit provided with a variable frequency compressor, and a minor constituent refrigerant which has lower critical pressure than that of the major constituent refrigerant.
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: July 14, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuji Yoshida, Shigeo Suzuki, Kazuo Nakatani, Yuji Mukai, Akira Nakazawa, Takumi Imoto