Evaporative emission control system for providing fuel vapor to automotive engine
CA 2254500 A1 · Owner: Ford Motor Company · Inventors: Vykydal, Marianne L.; Jamrog, James R.; Waskiewicz, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An engine controller tracks purge system pressure within a vapor line extending from a fuel tank to a carbon canister and, in the event that pressure changes at an unduly high rate, operates to restrict the purging of vapor from a carbon canister.
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 November 25, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 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.