Patents by Inventor Takao Uchiya

Takao Uchiya 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).

  • Method for manufacturing a fused cast refractory
    Patent number: 4943398
    Abstract: A method for manufacturing a fused cast refractory article including the steps of pouring a molten refractory material into a cavity of a mold including a casting sand held by a negative pressure applied through the sand and against a thermoplastic film which surrounds the mold cavity, casting and cooling off the refractory material, wherein the negative pressure is maintained after the casting. The mold includes an upper mold portion including a frame, a casting sand, and a thermoplastic film; a bottom mold portion including a frame, a casting sand and a thermoplastic film; and a cavity defined by the thermoplastic film between the upper and bottom mold portion and having an inlet opening.
    Type: Grant
    Filed: November 12, 1987
    Date of Patent: July 24, 1990
    Assignee: Toshiba Monofrax Co., Ltd.
    Inventors: Shigeo Endo, Haruo Kawashima, Kimio Hirata, Yasuo Saito, Takao Uchiya, Hideo Yanagi
  • Laminar block and method of and apparatus for producing the laminar block
    Patent number: 4670318
    Abstract: A laminar block for lining an inner wall of a furnace is composed of a number of individual laminated sheets of inorganic fibers sewed together by means of chain stiches. When the laminar block is cut to size, severing the thread, the chain stitches prevent the laminated sheets from separating.
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: June 2, 1987
    Assignee: Toshiba Monofrax Company, Ltd.
    Inventors: Takao Uchiya, Haruo Kawashima