Energy monitoring system for a plurality of local stations with snapshot polling from a central station
CA 2076211 C · Owner: Klancher, Frank · Inventors: Cather, Robert Lee; Klancher, Frank; Bell, Richard Burns
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PC computer monitors the energy consumed at local stations positioned behind an electrical meter of a utility company for individual billing of the local users using a bidirectional communication line. A command from the PC computer causes at each station the totalized energy to be stored, and then PC computer derives individual billing. A plurality of backpack units are directly mounted and plugged on panelboard circuit breakers for voltage and current sensing. Each backpack unit incorporates two printed board circuits.
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, 1992 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2014.
- 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.