Patents by Inventor Sakae Takenaka

Sakae Takenaka 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: 10181602
    Abstract: Provided is a redox catalyst wherein a catalytically active component is supported on carbon nanotubes whose average diameter (Av) and standard deviation (?) of diameters satisfy the condition 0.60>3?/Av>0.20, and at least a part of a surface of the carbon nanotubes, including a part on which the catalytically active component is supported, is covered with porous inorganic material.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: January 15, 2019
    Assignees: ZEON CORPORATION, KYUSHU UNIVERSITY
    Inventors: Masahiro Kishida, Sakae Takenaka, Akihiko Yoshiwara, Kiyoshige Kojima
  • Publication number: 20170117555
    Abstract: Provided is a redox catalyst wherein a catalytically active component is supported on carbon nanotubes whose average diameter (Av) and standard deviation (?) of diameters satisfy the condition 0.60>3?/Av>0.20, and at least a part of a surface of the carbon nanotubes, including a part on which the catalytically active component is supported, is covered with porous inorganic material.
    Type: Application
    Filed: May 27, 2015
    Publication date: April 27, 2017
    Applicants: ZEON CORPORATION, KYUSHU UNIVERSITY
    Inventors: Masahiro KISHIDA, Sakae TAKENAKA, Akihiko YOSHIWARA, Kiyoshige KOJIMA
  • Patent number: 8846271
    Abstract: An electrode material, including: catalyst particles formed by performing inclusion, by a porous inorganic material, for a conductive support and metal particles arranged on the conductive support and/or metal particles brought into contact with the conductive support.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: September 30, 2014
    Assignees: Nissan Motor Co., Ltd., Kyushu University, National University Corporation
    Inventors: Kenzo Oshihara, Katsuo Suga, Masahiro Kishida, Sakae Takenaka
  • Publication number: 20090291352
    Abstract: An electrode material, including: catalyst particles formed by performing inclusion, by a porous inorganic material, for a conductive support and metal particles arranged on the conductive support and/or metal particles brought into contact with the conductive support.
    Type: Application
    Filed: May 25, 2007
    Publication date: November 26, 2009
    Inventors: Kenzo Oshihara, Katsuo Suga, Masahiro Kishida, Sakae Takenaka
  • Patent number: 7300643
    Abstract: With a method producing hydrogen by making iron or iron oxide contact water, water vapor, or a gas including water vapor, a hydrogen generating medium, which has a high hydrogen generation reaction rate and is resistant to a repetition of oxidation-reduction without degrading its activity, is provided by adding a different metal (such as Ti, Zr, V, Nb, Cr, Mo, Al, Ga, Mg, Sc, Ni, Cu, etc.) other than the iron to the iron or the iron oxide.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: November 27, 2007
    Assignees: Uchiya Thermostat Co., Ltd., Kiyoshi Otsuka
    Inventors: Kiyoshi Otsuka, Sakae Takenaka, Kiyozumi Nakamura, Kazuyuki Iizuka
  • Publication number: 20060213331
    Abstract: A method for reducing a metal oxide and a method for manufacturing hydrogen are provided for easily reducing an oxide of a metal that decomposes water to generate hydrogen, using a gas that includes hydrocarbons, such as municipal gas. The method for reducing the metal oxide includes the step of reducing, using a reducing gas that includes hydrocarbons, a medium comprising an oxide of a metal that decomposes water to generate hydrogen, and at least one metal selected from the group consisting of platinum group elements, copper, nickel and cobalt. Furthermore, the method for manufacturing hydrogen includes the above-described reducing step, and a water-decomposing step of reacting water with the medium that is reduced in the reducing step, to generate hydrogen.
    Type: Application
    Filed: February 24, 2004
    Publication date: September 28, 2006
    Inventors: Kiyoshi Otsuka, Sakae Takenaka, Kiyozumi Nakamura, Kazuyuki Iizuka
  • Publication number: 20050255037
    Abstract: A method for producing hydrogen by contacting water, steam or gas containing steam with iron or iron oxide, wherein the iron or iron oxide is added with at least one metal of Rh, Ir, Ru, Pd, Pt and Os and at least one metal of Ti, Zr, V, Nb, Cr, Mo, Al, Ga, Mg, Sc, Ni and Cu. The method provides a medium for producing hydrogen which is capable of producing hydrogen at relatively low temperature and at a great generation rate, is free from the decrease of activity, and is resistance to repeated oxidation and reduction, which leads to the decomposition of water and production of hydrogen with good efficiency.
    Type: Application
    Filed: May 15, 2003
    Publication date: November 17, 2005
    Applicants: UCHIYA THERMOSTAT CO., LTD
    Inventors: Kiyoshi Otsuka, Sakae Takenaka, Kiyozumi Nakamura, Kazuyuki Iizuka
  • Publication number: 20040101474
    Abstract: With a method producing hydrogen by making iron or iron oxide contact water, water vapor, or a gas including water vapor, a hydrogen generating medium, which has a high hydrogen generation reaction rate and is resistant to a repetition of oxidation-reduction without degrading its activity, is provided by adding a different metal (such as Ti, Zr, V, Nb, Cr, Mo, Al, Ga, Mg, Sc, Ni, Cu, etc.) other than the iron to the iron or the iron oxide.
    Type: Application
    Filed: September 25, 2003
    Publication date: May 27, 2004
    Inventors: Kiyoshi Otsuka, Sakae Takenaka, Kiyozumi Nakamura, Kazuyuki Iizuka