Patents by Inventor Stephen Geoffrey Riley

Stephen Geoffrey Riley 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).

  • Microwave moisture sensing via waveguide with slot array
    Patent number: 6903557
    Abstract: A generator (6) directs microwave signals to a waveguide (1) having a linear array of slots (2), and the signals are received by measuring device (5). The local permittivity or moisture content of material adjacent the waveguide (1), such as a stack of timber, may be determined at each slot (2) via regression analysis. The total permittivity or moisture may be determined by averaging measurements obtained for both transmission directions of the waveguide (1). The apparatus may be used for controlling drying parameters, such as drying time, for the material.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: June 7, 2005
    Assignees: New Zealand Forest Research Institute Limited, Industrial Research Institute Limited
    Inventors: Wayne Stephen Holmes, Stephen Geoffrey Riley
  • Microwave moisture sensing via waveguide with slot array
    Publication number: 20040124855
    Abstract: A generator (6) directs microwave signals to a waveguide (1) having a linear array of slots (2), and the signals are received by measuring means (5). The local permittivity or moisture content of material adjacent the waveguide (1), such as a stack of timber, may be determined at each slot (2) via regression analysis. The total permittivity or moisture may be determined by averaging measurements obtained for both transmission directions of the waveguide (1). The apparatus may be used for controlling drying parameters, such as drying time, for the material.
    Type: Application
    Filed: September 17, 2003
    Publication date: July 1, 2004
    Inventors: Wayne Stephen Holmes, Stephen Geoffrey Riley