Patents by Inventor Max Roggatz

Max Roggatz 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 and device for controlling the CO contents of a furnace atmosphere for carburization and carbonitriding of metallic work pieces
    Patent number: 5741371
    Abstract: A method for controlling the CO contents of furnace atmosphere for carburizing and carbonitriding metallic workpieces in a furnace includes the step of directly feeding a mixture of an oxidizing reagent and a hydrocarbon-containing fuel into the furnace for producing a CO-containing furnace atmosphere. The CO contents of the furnace atmosphere is measured and compared to a preset minimal CO value. A CO-forming substance is introduced into the furnace atmosphere when the measured CO contents is no longer greater than the preset minimal CO value.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: April 21, 1998
    Assignee: Ispen Industries International GmbH
    Inventor: Max Roggatz