Patents by Inventor Katsuhei Minami

Katsuhei Minami 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).

  • 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