Patents by Inventor John Graggs

John Graggs 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).

  • Helix antenna
    Publication number: 20060001591
    Abstract: An antenna element is disclosed, having a ground plane (106), a helix (104) disposed above the ground plane (106), the helix (104) being connectable to a communications apparatus at a helix end (214) located near the ground plane (106), and a spiral (102) substantially centred on the axis (100) of the helix (104) the spiral (102) having an outer end thereof connected to the other helix end, said spiral (102) thereby terminating the antenna.
    Type: Application
    Filed: June 3, 2003
    Publication date: January 5, 2006
    Inventors: John Graggs, Christopher Boyce