Metering systems
CA 2289596 A1 · Owner: Ricci, Francesco Giovanni · Inventors: Ricci, Francesco Giovanni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A metering system comprises a meter (1) for generating consumption data indicative of consumption of a service valve means (4) which can be opened or closed to enable or disable supply of the service and payment means (2) , arranged for communication with the meter (1) via a communications link (10). The payment means (2) includes input means (6) for input of credit by the consumer, and a payment controller (9) for monitoring consumption of the service against input credit. The state of the valve (4) is controlled in dependence on the input credit. The meter (1) transmits the consumption data to the payment means (2), and the system varies the frequency with which the consumption …
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 5, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2020.
- 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.