Patents by Inventor Issei Uchida

Issei Uchida 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).

  • Carbon-containing refractory
    Patent number: 4471059
    Abstract: Carbon in the form of graphite is commonly used in refractories for metallurgical purposes because of its ability to increase resistance to corrosion. However, if the graphite in the refractory becomes oxidized, it greatly loses this ability. For this reason, it is very important for a refractory to have good resistance to oxidation, but there are at present no refractories fully satisfactory from the standpoints of resistance to oxidation and hot strength.The present invention is a carbon-containing refractory having excellent resistance to oxidation and hot strength. These favorable properties are obtained by the addition in the refractory of both boron carbide and metal powder, the powder comprising at least one metal selected from Al, Si, Fe, and Ni.
    Type: Grant
    Filed: February 4, 1983
    Date of Patent: September 11, 1984
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Shigeo Yoshino, Hideaki Nishio, Issei Uchida