Patents Assigned to Yoshizawa Lime Industry Co., Ltd.
  • Indirect heating furnace
    Patent number: 6749425
    Abstract: An indirect heating furnace heats a substance in a reaction tube with a high-temperature combustion gas without contact between the substance and the combustion gas. The reaction tube is a stationary ceramic tube. A combustion device for supplying said heating high-temperature combustion gas into the furnace in comprised of at least one pair of regenerative burners.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: June 15, 2004
    Assignees: JP Steel Plantech Co., Yoshizawa Lime Industry Co., Ltd., Merichem Company
    Inventor: Michio Nakayama