Traffic information estimation and reporting system
CA 2183284 C · Owner: At&T Corp. · Inventors: Ronen, Yzhak; Silverman, David Phillip; Foladare, Mark Jeffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An estimation of traffic conditions on roads located in the radio coverage areas of a wireless communications network is provided based on an analysis of real-time and past wireless traffic data carried on the wireless communications network. Data analyzed may include for example, actual (current) and expected (past average) number of a) active-busy wireless end-user devices in one or more cells at a particular period of time b) active-idle wireless end-user devices registered in a location area of the wireless communications network c) amount of time spent by mobile end-user devices in one or more cells at a particular period of time.
Read the whole patent
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 August 14, 1996 and granted July 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2018.
- 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.