Patents by Inventor Katsuhiko Tsuzura

Katsuhiko Tsuzura 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 of producing reduced iron and light oil from ion ore and heavy oil
    Patent number: 4897179
    Abstract: A method of producing reduced iron and light oil from iron ore and heavy oil which comprises a thermal cracking step of subjecting heavy oil to thermal cracking while retaining iron ore particles in a fluidized state to produce light oil and simultaneously to deposit coke as by-product on the surface of the iron ore particles; a gasification step of putting the coke-deposited ore in contact with an oxidizing gas including steam and oxygen in a fluidized state to react the coke with the gas thereby to produce a reducing gas containing hydrogen and carbon monoxide and of heating the coke-deposited ore upward of a reduction temperature of iron ore by partial oxidization of the coke; and a reduction step of reducing the coke-deposited iron ore in a fluidized state by the reducing gas to produce reduced iron. When the gasification step is performed by an oxidizing gas containing a majority of steam and up to 15 vol. %, based on the steam, of oxygen at 800.degree.-1000.degree. C. under a pressure of 0-10 kg/cm.sup.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: January 30, 1990
    Assignee: Jyushitsuyu Taisaku Gijutsu Kenkyukumiai
    Inventors: Kenji Mori, Katsuhiko Tsuzura, Mamoru Onoda, Ryo Watanabe, Takehiko Ashie, Yoshifumi Kameoka, Katsufumi Shinohara, Atsuhiko Nakanishi