A separating device comprising a ceramic membrane
CA 2344171 A1 · Owner: Universiteit Twente · Inventors: Nijmeijer, Arian; Kruidhof, Hendrik; Verweij, Hendrik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for separating liquid and/or gas components from each other which , device includes a ceramic membrane comprising a porous layer of .gamma.alumina (2) which is present on top of a porous layer of supporting material (1), wherein an alkali-free, phosphorous material (4) is provided between said supporting material (1) and said layer of .gamma.-alumina (2) and wherein , said material preferably consists of monoaluminium phosphate.
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 30, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 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.