Patents by Inventor Hiroshi Fukuoka

Hiroshi Fukuoka 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 treating waste produced during stainless steel making
    Patent number: 4004918
    Abstract: A method of treating waste produced during stainless steel making is disclosed. The method comprises the steps of kneading a sludge cake with a mixture of dust and scale to obtain a kneaded mass, adding an organic binder and eventually adding water with an inorganic binder to said kneaded mass, shaping said kneaded mass into a briquette, and heating said briquette at a low temperature. The briquette obtained can be used as a ferroalloy making raw material.Metal oxides contained in the briquette are reduced by a dry reduction refining added with a carbonaceous reducing agent and eventually with a flux to separate usable metals.
    Type: Grant
    Filed: June 12, 1975
    Date of Patent: January 25, 1977
    Assignees: Nissin Steel Co. Ltd., Japan Metals & Chemicals Co. Ltd.
    Inventors: Hiroshi Fukuoka, Teruhiko Kameyama, Yuji Takahashi, Kenji Nicho, Tatsuo Misawa, Tsuneyuki Inoue, Kimiaki Imai