Patents by Inventor Yoshiaki Yoshimatsu

Yoshiaki Yoshimatsu 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).

  • Arc furnace installation with shroud
    Patent number: 4506370
    Abstract: An arc furnace installation wherein the arc furnace is air-tightly enclosed with a shroud and a scrap preheating chamber moves into or out of the shroud in such a way that the preheating chamber may be selectively brought to a position immediately above the arc furnace, a scrap preheating position spaced apart from the arc furnace by a predetermined distance and a scrap charging position outside of the shroud. The number of openings of the shroud may be reduced to a minimum and consequently the total area of the openings may be minimized.
    Type: Grant
    Filed: July 6, 1983
    Date of Patent: March 19, 1985
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventor: Yoshiaki Yoshimatsu
  • Shroud for steel making electric-arc furnace
    Patent number: 4395023
    Abstract: This invention relates to a shroud for a steel making electric-arc furnace which surrounds the electric-arc furnace main body for sound- and dust-proofing, having doors provided in the side wall of the shroud to permit the scrap bucket to move in and out of the shroud and an opening of a minimum width in the suction port of a dust collecting suction duct on the top wall to permit transverse movement of the bucket lifting means to the center of the electric-arc furnace main body.
    Type: Grant
    Filed: June 14, 1982
    Date of Patent: July 26, 1983
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Kawasaki Seitetsu Kabushiki Kaisha
    Inventors: Fumio Tomizawa, Katsutoshi Sobata, Yoshiaki Yoshimatsu, Sadayuki Saito, Takashi Otani, Senzaburo Hirano