Patents by Inventor Yasuo Nishikawa

Yasuo Nishikawa 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).

  • Catalyst for the reduction of nitrogen oxides and method for the production thereof
    Patent number: 4093561
    Abstract: Disclosed is a substance which is obtained by calcining an iron hydroxide or a water-containing iron oxide and coating the surface of the resultant calcined product with alumina. This substance is useful as a catalyst in the removal of nitrogen oxides from an exhaust gas containing the nitrogen oxides.
    Type: Grant
    Filed: February 1, 1977
    Date of Patent: June 6, 1978
    Assignee: Kyushu Refractories Co., Ltd.
    Inventors: Yasuo Nishikawa, Akira Watanabe, Tetsuya Sugimoto, Kazuyasu Yabuki, Yoshio Hatayama
  • Alumina-chrome refractory composition
    Patent number: 4039344
    Abstract: An alumina-chrome refractory composition comprises 30-60% by weight of alumina-silica type material containing 50-95% by weight of alumina with the major part in coarse particle size, and 70-40% by weight of chrome type material with the major part in fine particle size. In a modification, the alumina-chrome refractory composition comprises 70-99% by weight of a mix consisting of the alumina-silica type material and chrome type material in the above percentages, and 1-30% by weight of at least one of the materials selected from the group consisting of alumina, zircon, zirconia, magnesia, spinel, clay, silicon carbide and titanium oxide in fine particle size ranges.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: August 2, 1977
    Assignee: Kyushu Refractories Co., Ltd.
    Inventors: Yasuo Nishikawa, Takeo Okamura, Katsuhei Minami
  • Catalyst for gasification of heavy hydrocarbons in fluidized bed
    Patent number: 4025460
    Abstract: A catalyst for the gasification of heavy hydrocarbons in a fluidized bed which contains CaO and has high catalytic activity, long life and mechanical strength, and further characterized in that a part or the whole of said CaO exists in the form of at least one member selected from the group consisting of 2CaO.Fe.sub.2 O.sub.3, 2CaO.SiO.sub.2 and 3CaO.SiO.sub.2 is disclosed.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: May 24, 1977
    Assignees: Kyushu Taika Renga Kabushiki Kaisha, Mitsui Shipbuilding and Engineering Co., Ltd.
    Inventors: Mikio Ueda, Takeshi Kubota, Yasuo Nishikawa, Akira Watanabe