Patents by Inventor Miki Suma

Miki Suma 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).

  • Graphite refractory article having dense structure with low porosity
    Patent number: 4282288
    Abstract: A graphite refractory article having a dense structure with a low porosity, which has a chemical composition consisting essentially of:100 wt. parts of natural flake graphite, as the carbonaceous raw material, comprising at least 70 wt. % flake graphite having a particle size within the range of from 0.1 to 3 mm and up to 30 wt. % flake graphite having a particle size of under 0.1 mm; from 4 to 10 wt. parts of powdery phenol resin as the binder; and, incidental impurities;said graphite refractory article being obtained by press-forming a dry mixture having said chemical composition under a forming pressure of from 700 to 2,000 kg/cm.sup.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: August 4, 1981
    Assignees: Shinagawa Shirorenga Kabushiki Kaisha, Toshin Seiko Kabushiki Kaisha
    Inventors: Shigeo Yoshino, Tadashi Zenbutsu, Hajime Asami, Miki Suma