Patents by Inventor David Eugene Hoffman

David Eugene Hoffman 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: 6709522
    Abstract: A plasma treatment system wherein workpieces are carried in slots in a magazine. The plasma treatment system has first and second plasma treatment chambers mounted on a common base a base. A queuing station is located on the base for receiving the magazines. A magazine handler moves a magazine to a location adjacent one of the first and second plasma treatment chambers. A workpiece handler transfers a workpiece between the magazine and the one of the first and second plasma treatment chambers. The workpiece handler has a workpiece translator with a first surface that contacts a first edge of the workpiece for pushing the workpiece into the plasma treatment chamber. In addition, the workpiece translator has a second surface that contacts an opposite edge of the workpiece for pushing the workpiece out of the plasma treatment chamber.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: March 23, 2004
    Assignee: Nordson Corporation
    Inventors: Robert Sergel Condrashoff, James Patrick Fazio, David Eugene Hoffman, James Scott Tyler