Yard tracking system
CA 2431868 C · Owner: Whitfield, Russell · Inventors: Whitfield, Russell; Matheson, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for identifying and determining the position of rolling stock within a railyard using a system that includes an AEI reader a plurality of elevated , electronic imaging devices and a tracking computer. The rolling stock includes a plurality of railcars and a plurality of locomotives. The method includes recording an identification pattern for each piece of rolling stock as each piece enters the railyard, compiling tracking data of the rolling stock as the rolling stock moves within the railyard using the respective identification patterns, and mapping the position of each piece of rolling stock as the rolling stock moves within the railyard.
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 October 26, 2001 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2023.
- 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.