Patents by Inventor Fumiyoshi Sakurai

Fumiyoshi Sakurai 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 for cooling graphite electrodes used for metal melting and refining in an electric arc furnace and a ladle
    Patent number: 5795539
    Abstract: This invention concerns a method for water-cooling directly a vertical train of graphite electrodes connected to each other, by using a cooling water sprayed directly onto the outer periphery surface of at least one graphite electrode consisting of an upper portion of graphite electrode train, in which the cooling water is directed at the upward or downward inclination with respect to the horizontal level and said cooling liquid is sprayed simultaneously at a flow rate ranging between 0.8 liters/minute and 40 liters/minute.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: August 18, 1998
    Assignee: Nippon Carbon Co., Ltd.
    Inventors: Fumiyoshi Sakurai, Norio Nagai