Current loop control circuit for a time of flight ranging system
CA 2416341 A1 · Owner: Mercier, Claude · Inventors: Mercier, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A current loop control circuit for a process variable transmitter coupled to a receiver at a remote location through a two-conductor current loop. The current loop control circuit efficiently utilizes the current in the loop to produce, an optimal voltage and current for the operation of the process variable measurement transmitter.
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 January 14, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2025.
- 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.