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Expired Canadian patentCanada

Method and apparatus for wireless network hybrid positioning

CA 2530892 C · Owner: Deloach, James D. Jr. · Inventors: Deloach, James D. Jr.; Rowitch, Douglas N.; Sheynblat, Leonid

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Abstract From the Canadian patent

Methods and apparatuses for position determination and other operations. In one embodiment of the present invention a mobile station uses wireless , signals from a plurality of wireless networks (e.g. with different air interfaces and/or operated by different service providers) for position determination (e.g. for data communication for obtaining time and/or , frequency information for range measurement, for sector or altitude estimation). In one embodiment of the present invention mobile stations are , used to harvest statistical data about wireless access points (e.g. the locations of mobile stations that have received signals from the wireless access points, such as from cellular …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed June 28, 2004 and granted October 27, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 28, 2004
GrantedOctober 27, 2015
Term endedJune 28, 2024
Patent numberCA 2530892 C
Classification (IPC)H04W64/00 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJune 28, 2004Patent grantedOct 27, 2015Term endedJune 28, 2024

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.