Filtering element made of absorbent paper material in the form of a tubular cylinder
CA 2339877 A1 · Owner: Hungler, Joel · Inventors: Hungler, Joel; Malecot, Yves
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a filtering element for filtering a fluid wherein the filtering element (14) is designed to be used in a filtering device (10) comprising a cylindrical case (12), wherein the filtering element (14) is made of an absorbent paper material in the form of a sheet, arranged so as to form a tubular cylinder and wherein the filtering element (14) is arranged in the case (12) so as to separate an outer radial part (26) from an inner radial part (30) the fluid circulating through the filtering element (14) along a general centripetal direction characterised in that the filtering element (14) does not comprise a central mandrel.
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 2, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 2, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 2, 2021.
- 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.