Patents by Inventor Masao Shibuno

Masao Shibuno 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).

  • Refractories, batch for making the same and method for making the same
    Patent number: 4104075
    Abstract: A refractory comprising 30 to 70% by weight of coarse refractory grain, and as an indispensable ingredient, of bonded structure for the coarse refractory grain titanium nitride, silicon carbide and alumina which are formed therein.
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: August 1, 1978
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Takeshi Hayashi, Masao Shibuno, Chokei Sawaki, Susumu Okazaki
  • Alumina-silicon carbide refractories and their method of manufacture
    Patent number: 4069060
    Abstract: Alumina-silicon carbide refractory characterized by comprising predominantly an inter growth texture. The alumina-silicon carbide is manufactured by adding fine aluminum powder to a body of silica-alumina type refractory compound, mixing, molding and drying the resultant mixture to obtain a green body and finally firing the green body in an atmosphere containing predominantly a carbon oxide gas.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: January 17, 1978
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Takeshi Hayashi, Masao Shibuno