1. US Patent 7010021 Method of generating a time shifted signal (with Martin Wilcox, Bryan Young and Andrew Yule)
2. US Patent 7733940 Method and apparatus for signal receipt and acquisition (with Saul Dooley and Andrew Yule)
3. US Patent 8560233 Method of determining a GPS position fix and a GPS receiver for the same (with Andrew Yule)
4. US Patent Application 20030086483 Method and apparatus for spread spectrum signal acquisition (with Saul Dooley and Andrew Yule)
5. US Patent Application 20060133556 Device, system and method for obtaining timing information and ranging

Versions of the first and third items have been granted in Europe as Patents EP 1322973 and EP 1623247 respectively.