Patents by Inventor Katsuma Fujiwara

Katsuma Fujiwara 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).

  • Hot Metal Production from DRI with Electric Arc Heating
    Publication number: 20230287528
    Abstract: According to embodiments, disclosed is a method and system to maintain the soft and sparse slag characteristic favorable for an electric arc to efficiently transfer the energy to molten iron with the power input per furnace area higher than 600 KW/m2 while keeping FeO amount less than 5% in the slag and carbon amount higher than 2.5% in the product hot metal at a DRI melting furnace.
    Type: Application
    Filed: March 7, 2023
    Publication date: September 14, 2023
    Inventors: Haruyasu MICHISHITA, Koji Tokuda, Tsuyoshi Mimura, Katsuma Fujiwara