Patents by Inventor Tuneyuki Inoue

Tuneyuki Inoue 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).

  • Process for production of high-chromium alloy by smelting reduction
    Patent number: 4565574
    Abstract: A process which enables high-chromium alloy such as ferrochromium heretofore obtained by the use of electricity to be produced less expensively in higher yield of chromium by the smelting reduction using solid carbonaceous material such as coke in the place of electricity.The process of smelting reduction is so performed in the top and bottom blowing converter divided into two stages: the first stage for carrying out the converter operation under continued supply of the raw materials containing pre-reduced chromium oxide (chromium ore) and the second stage for carrying out the converter operation under suspended supply of the raw materials containing the pre-reduced chromium oxide, and the first stage of converter operation is carried out under conditions such that the temperature of the molten metal remains at or below 1,650.degree. C.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: January 21, 1986
    Assignees: Nippon Steel Corporation, Japan Metals and Chemicals Co., Ltd.
    Inventors: Hiroyuki Katayama, Hidetake Ishikawa, Masatoshi Kuwabara, Chikara Saito, Tuneyuki Inoue, Masaki Fujita