Annular chromatograph
CA 2301570 A1 · Owner: Prior Separation Technology Gmbh · Inventors: Prior, Adalbert
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 annular chromatograph comprising a coating in the shape of a particulate bed, wherein said chromatograph is characterised in that the particulate bed comprises at least two superimposed areas which contain different materials and which are separated from each other by at least one separation layer.
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 November 30, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 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.