Inventor
DUFFETT-SMITH PETER JAMES
GB29 patents
⚠️ This page may combine multiple inventors who share the name “DUFFETT-SMITH PETER JAMES”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CAMBRIDGE POSITIONING SYS LTD
17 patentsUS7359719B1Apr 15, 2008
Radio positioning systems
CAMBRIDGE POSITIONING SYS LTD126 citations98
US6529165B1Mar 4, 2003
Radio positioning systems
CAMBRIDGE POSITIONING SYS LTD128 citations98
US7652622B2Jan 26, 2010
Transfer of position information of mobile terminal
CAMBRIDGE POSITIONING SYS LTD53 citations97
US6937866B2Aug 30, 2005
Positioning systems and methods
CAMBRIDGE POSITIONING SYS LTD82 citations96
US6094168AJul 25, 2000
Position determining system
CAMBRIDGE POSITIONING SYS LTD264 citations96
US6342854B1Jan 29, 2002
Position determining system
CAMBRIDGE POSITIONING SYS LTD86 citations95
US6894644B2May 17, 2005
Radio positioning systems
CAMBRIDGE POSITIONING SYS LTD62 citations94
US8013788B2Sep 6, 2011
Assistance to a mobile SPS receiver
CAMBRIDGE POSITIONING SYS LTD21 citations92
US7978136B2Jul 12, 2011
Associating a universal time with received signal
CAMBRIDGE POSITIONING SYS LTD23 citations92
US7639179B2Dec 29, 2009
Transfer of position information to a mobile terminal
CAMBRIDGE POSITIONING SYS LTD25 citations92
US7593736B1Sep 22, 2009
Positioning system for digital telephone networks
CAMBRIDGE POSITIONING SYS LTD43 citations92
US7852267B2Dec 14, 2010
Transfer of calibrated time information in a mobile terminal
CAMBRIDGE POSITIONING SYS LTD31 citations90
US7508883B2Mar 24, 2009
Radio positioning systems
CAMBRIDGE POSITIONING SYS LTD38 citations90
US7315745B2Jan 1, 2008
Radio positioning systems
CAMBRIDGE POSITIONING SYS LTD53 citations90
US7260407B2Aug 21, 2007
Radio location system measurement unit
CAMBRIDGE POSITIONING SYS LTD43 citations90
US8050687B2Nov 1, 2011
Location systems and methods
CAMBRIDGE POSITIONING SYS LTD22 citations89
US5838279ANov 17, 1998
Navigation and tracking system for shielded spaces
CAMBRIDGE POSITIONING SYS LTD47 citations87
FOCAL POINT POSITIONING LTD
6 patentsUS12585027B2Mar 24, 2026
Positioning system and method
FOCAL POINT POSITIONING LTD0 citations61
US12022278B2Jun 25, 2024
Method and apparatus for providing selective privacy in a tracking system
FOCAL POINT POSITIONING LTD0 citations61
US12578414B2Mar 17, 2026
Wireless communication systems and methods
FOCAL POINT POSITIONING LTD0 citations50
US12438594B2Oct 7, 2025
Method and apparatus for improving co-channel operation of independent radio systems
FOCAL POINT POSITIONING LTD0 citations50
US12436297B2Oct 7, 2025
Method, system and computer program product for performing correlation in a positioning system
FOCAL POINT POSITIONING LTD0 citations50
US12388497B2Aug 12, 2025
Method and apparatus for performing direction division multiple access
FOCAL POINT POSITIONING LTD0 citations50
DUFFETT-SMITH PETER JAMES
5 patentsUS8255160B2Aug 28, 2012
Integrated mobile terminal navigation
DUFFETT-SMITH PETER JAMES27 citations92
US8279116B2Oct 2, 2012
Processing received satellite radio signals
DUFFETT-SMITH PETER JAMES24 citations91
US8253628B2Aug 28, 2012
Transfer of calibrated time information in a mobile terminal
DUFFETT-SMITH PETER JAMES23 citations89
US8103294B2Jan 24, 2012
Determining the change in time at a mobile terminal
DUFFETT-SMITH PETER JAMES19 citations81
US8730105B2May 20, 2014
Finding the position of a mobile terminal
DUFFETT-SMITH PETER JAMES0 citations40