Monitoring usage of electronic equipment
CA 2487443 A1 · Owner: Lewis-Savage, Dave · Inventors: Lewis-Savage, Dave
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for the rental of image projectors in which , a customer is provided with an image projector over an extended period. In accordance with embodiments of the invention the image projector is arranged , to sense and monitor usage during the extended period and in at least one , aspect of the invention transmit a signal indicative of the same to a remote processing system. The remote processing system evaluates a cost corresponding to the usage and the customer is charged accordingly. The transmitted signal includes data relating to a temporal characteristic of the monitored usage within the extended period, in particular the time that the equipment was …
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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 30, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 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.