A monitoring process and system for monitoring movements of vehicles
CA 2449169 C · Owner: Phillips, Austin · Inventors: Spring, Jonathan; Dickson, Adam Matthew; Phillips, Austin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A monitoring system includes a transmitter (102) with two transmit modules (208, 210) and a receiver (104) with two receive modules (212 214). Each of , the transmit modules (208 210) generates an optical signal modulated at a unique frequency. The optical signals are transmitted across a roadway (112) and are detected by the receive modules (212 214). When a vehicle (110) moves , between the transmitter (102) and receiver (104) the optical signals are , blocked. The receiver (104) generates timestamped make and break events corresponding to the blocking and unblocking of the signals and these are , used to determine parameters for the vehicle (110) such as velocity and vehicle …
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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 4, 2002 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2024.
- 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.