Support chip for microprocessor based products powered from noisy ac sources
CA 2208915 A1 · Owner: Adams, John T. · Inventors: Adams, John T.; Bird, Douglas D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A monitoring device is provided to track the characteristics of the input power signals to assure the power signals are in an optimal range for microcontroller operation. Additionally the monitoring device cooperates with the microcontroller to provide a watchdog function which serves as a self-check for the microcontroller. Additionally the monitor circuit will help to provide timing information to the microprocessor and will provide an A to D comparator for use in performing A to D conversions.
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 June 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2019.
- 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.