Patents by Inventor Craig T. Llewellyn

Craig T. Llewellyn 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).

  • Wireless field maintenance adapter
    Patent number: 8224256
    Abstract: A wireless field maintenance adapter includes a power source, a controller, a low-power radio-frequency communication module, and a wireless process communication protocol module. The controller is coupled to the power source. The low-power radio-frequency communication module is also coupled to the controller. The wireless process communication protocol module is coupled to the controller. The controller is configured to communicate through the wireless process communication protocol module based on information received from the low-power radio-frequency communication module.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: July 17, 2012
    Assignee: Fisher-Rosemont Systems, Inc.
    Inventors: Joseph Citrano, III, Todd M. Toepke, Alan R. Dewey, Alden C. Russell, III, Stephen Armstrong, Craig T. Llewellyn, David J. Baker, Stuart A. Harris
  • WIRELESS FIELD MAINTENANCE ADAPTER
    Publication number: 20100190442
    Abstract: A wireless field maintenance adapter includes a power source, a controller, a low-power radio-frequency communication module, and a wireless process communication protocol module. The controller is coupled to the power source. The low-power radio-frequency communication module is also coupled to the controller. The wireless process communication protocol module is coupled to the controller. The controller is configured to communicate through the wireless process communication protocol module based on information received from the low-power radio-frequency communication module.
    Type: Application
    Filed: January 21, 2010
    Publication date: July 29, 2010
    Inventors: Joseph Citrano, III, Todd M. Toepke, Alan R. Dewey, Alden C. Russell, III, Stephen Armstrong, Craig T. Llewellyn, David J. Baker, Stuart A. Harris