Utility meter interface unit
CA 2271409 A1 · Owner: Schlumbergersema Inc. · Inventors: Ali, Mohammed Sulaiman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A meter interface unit (MIU) for use in sending via RF or other suitable type of transmission utility, consumption information from a utility meter to a remote location. The MIU includes an antenna electrically coupled to a transmitter device. A microprocessor is operative to initiate reading of usage information from the meter encoder associated with the meter and control transmission of that information at selected times. The microprocessor implements functions to determine which of several known types of meter encoders is present. The meter encoder data is then read and converted to the desired transmission protocol. Power management circuitry is provided to limit application of power to …
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 May 10, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2021.
- 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.