Patents by Inventor Shigenobu Yurugi

Shigenobu Yurugi 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).

  • Carbonaceous ceramic composite for use in contact with molten nonferrous metal
    Patent number: 5135893
    Abstract: This invention provides a carbon-containing ceramic composite for molten non-ferrous metal, the composite being a sintered ceramic body to be used in contact with molten non-ferrous metal, the sintered body containing an aggregate of silicon carbide and/or silicone nitride, the sintered body being characterized in that it comprises,(a) 100 parts by weight of the aggregate,(b) 5 to 45 parts by weight of flake graphite, and(c) boron carbide in an amount of 10 to 40% by weight based on the flake graphite.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: August 4, 1992
    Assignee: Osaka Gas Company Limited
    Inventors: Shoji Dohi, Akio Nakashiba, Kengo Hamada, Shigenobu Yurugi, Hiroshi Sano, Yoshitaka Hayashi, Akira Nishihira, Hirokazu Asada, Mineyoshi Nishinou, Mamoru Imajo
  • Process for treating waste water by wet oxidations
    Patent number: 4699720
    Abstract: Waste water containing at least two kinds of components among suspended solids, ammonia and chemically oxidizable substances is treated in a liquid phase oxidation in the presence of a catalyst supported by a carrier of honeycomb construction.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: October 13, 1987
    Assignee: Osaka Gas Company Limited
    Inventors: Yoshiaki Harada, Akio Nakashiba, Hiroyuki Matuura, Teizou Okino, Hajime Fujitani, Kenichi Yamasaki, Yasuhumi Doi, Shigenobu Yurugi