Patents by Inventor Takanori Tsuge

Takanori Tsuge 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).

  • Heat treatment method and heat treatment apparatus
    Patent number: 7722728
    Abstract: In a heat treatment method for supplying transforming gas and enriched gas inside a furnace and heat treating a workpiece inside the furnace, feedback control of carbon potential is performed by operating a supply flow rate of the enriched gas based on carbon potential inside the furnace, the feedback control is stopped before an opening of the furnace is opened and supply flow rates of the transforming gas and the enriched gas are increased from supply flow rates thereof immediately before the feedback control is stopped; and the supply flow rate of the transforming gas is returned to the supply flow rate thereof immediately before the feedback control is stopped and the feedback control is resumed after the opening of the furnace is closed.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: May 25, 2010
    Assignee: Dowa Mining Co., Ltd.
    Inventors: Takanori Tsuge, Koji Abe
  • Heat treatment method and heat treatment apparatus
    Publication number: 20060223015
    Abstract: In a heat treatment method for supplying transforming gas and enriched gas inside a furnace and heat treating a workpiece inside the furnace, feedback control of carbon potential is performed by operating a supply flow rate of the enriched gas based on carbon potential inside the furnace, the feedback control is stopped before an opening of the furnace is opened and supply flow rates of the transforming gas and the enriched gas are increased from supply flow rates thereof immediately before the feedback control is stopped; and the supply flow rate of the transforming gas is returned to the supply flow rate thereof immediately before the feedback control is stopped and the feedback control is resumed after the opening of the furnace is closed.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 5, 2006
    Inventors: Takanori Tsuge, Koji Abe