Patents by Inventor Hisashi Yuuda

Hisashi Yuuda 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: 8822369
    Abstract: The present invention relates to a method for producing a hydrocarbon-producing catalyst for producing a hydrocarbon from a mixed gas of carbon monoxide and hydrogen and provides a method for producing, with stability and at high productivity, a hydrocarbon-producing catalyst with which the rate of conversion of carbon monoxide to hydrocarbon is high, the methane selectivity is low, the high activity can be maintained over a long period, the desorption of the active metal is unlikely to occur, and the durability is excellent. The method includes a precursor film forming step of putting a sol solution of an active metal compound and a metal oxide precursor in contact with a heated catalyst carrier 2 to form a precursor film on a surface of the catalyst carrier 2, and a hydrolysis step of gelling the precursor film by hydrolysis to form a metal oxide gel film 4, with the active metal 6 dispersed uniformly, on the surface of the catalyst carrier 2.
    Type: Grant
    Filed: November 27, 2009
    Date of Patent: September 2, 2014
    Assignee: Kitakyushu Foundation for the Advancement of Industry, Science and Technology
    Inventors: Xiaohong Li, Hisashi Yuuda
  • Publication number: 20110230574
    Abstract: The present invention relates to a method for producing a hydrocarbon-producing catalyst for producing a hydrocarbon from a mixed gas of carbon monoxide and hydrogen and provides a method for producing, with stability and at high productivity, a hydrocarbon-producing catalyst with which the rate of conversion of carbon monoxide to hydrocarbon is high, the methane selectivity is low, the high activity can be maintained over a long period, the desorption of the active metal is unlikely to occur, and the durability is excellent. The method includes a precursor film forming step of putting a sol solution of an active metal compound and a metal oxide precursor in contact with a heated catalyst carrier 2 to form a precursor film on a surface of the catalyst carrier 2, and a hydrolysis step of gelling the precursor film by hydrolysis to form a metal oxide gel film 4, with the active metal 6 dispersed uniformly, on the surface of the catalyst carrier 2.
    Type: Application
    Filed: November 27, 2009
    Publication date: September 22, 2011
    Applicant: Kitakyushu Found for the ADV of IND., SCI & TECH
    Inventors: Xiaohong Li, Hisashi Yuuda