Patents by Inventor Edward N. Switzer

Edward N. Switzer 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).

  • Patent number: 6175103
    Abstract: An automated heat treatment controller consistently controls heat treating a metallic target in a furnace according to a heat treatment recipe including a cycle temperature and a cycle exposure time. The automated heat treatment controller includes an operator interface for prompting an operator to load or remove a heat treated target. The controller further provides for commanding furnace door locks and for monitoring system performance. An automated heat treatment furnace method includes the steps of pre-heating the furnace, prompting the user to load the material, reheating the furnace to heat treatment parameters, controlling the exposure time and temperature, and prompting the removal of the material.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: January 16, 2001
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: Raymond K. F. Lam, Edward N. Switzer, Tony Sica