Separation device
CA 2423398 C · Owner: Bollegraaf International Holding B.V. · Inventors: Smook, Derk Abel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Device for separating fine fractions and coarse fractions from bulk goods comprising a frame and a screen plane supported by it for supporting the coarse, fraction and allowing the fine fraction to pass through the screen plane , being, formed by a number of screen disks that have been arranged in groups and, detachably on rotating driven shafts the shafts on both sides being bearing mounted with bearing ends in first and second bearings on the frame and at at least one end being in driven engagement with driving means the bearing ends, being divided into a shaft member permanent to the shaft and a bearing member bearing mounted in the first and second bearings on the frame which bearing, …
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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 March 25, 2003 and granted February 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 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.