Multiple pass location processor
CA 2519147 C · Owner: Trueposition, Inc. · Inventors: Anderson, Robert J.; Stilp, Louis A.; Ward, Matthew L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multiple pass location processing method for use in a wireless location , system (WLS) comprises identifying a received transmission as requiring multiple pass location processing whereby the WLS produces a first lower , quality location estimate and then subsequently produces a second higher , quality location estimate. The WLS then produces the first location estimate and provides it to a first location application and then produces the second , location estimate. The second location estimate may be a more accurate estimate than the first location estimate and/or of a higher confidence than the first location estimate. This method is suitable but not limited, for use , in connection …
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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 March 31, 2004 and granted December 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 31, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.