Up-flow rake bar screen assembly
CA 2403151 A1 · Owner: Apoc Limited · Inventors: Froud, David P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an up-flow rake bar screen having a multiplicity of bars which are parallel to one another and which are spaced from one another across the screen. At least a portion of each bar is curved so that, when that portion is viewed from a position at which when the screen , is in use, fluid has not yet passed through the screen that portion of the , bar appears convex.
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 March 22, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 22, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2023.
- 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.