Apparatus for filtering suspensions
CA 2301164 A1 · Owner: Gl&V/Celleco Ab · Inventors: Frykhult, Rune H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for filtering mat forming suspensions such as fibre pulp , suspensions, has rotating annular discs (6) with peripheral chambers (13) arranged to operate as droplegs on the ascending parts of the discs. To speed up the emptying of the chambers there are venting means (21 23) effective to , supply air into the chambers at the upwardly moving parts of the discs when , the chambers are at least partly above a body of the suspension to be filtered during rotation of the discs.
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 August 31, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 31, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 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.