Patents by Inventor Michael L. Fenstermaker

Michael L. Fenstermaker 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).

  • Accelerated carburizing method with discrete atmospheres
    Patent number: 4597807
    Abstract: A method for operating a continuous rotary carburizing furnace is disclosed, wherein a carburizing mixture is introduced into the furnace retort without inerts while an inert gas is introduced into the shell of the furnace without carbon containing gases. The method effects an increase in productivity through an increased rate of carburization of work pieces with less carburization or sooting of the furnace apparatus.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: July 1, 1986
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael L. Fenstermaker, Mark A. Pellman