Adsorbent bed loading and regeneration
CA 2488031 A1 · Owner: Arco Chemical Technology, L.P. · Inventors: Liepa, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The process for removing impurities from a liquid by contact with a solid adsorbent using parallel contact adsorbent beds such that when one bed is contacting the liquid the parallel bed is being regenerated by contact with heated inert gas, wherein during changeover of the beds inert gas is transferred from the regenerated bed to the spent bed during the period that liquid is being drained from the spent bed.
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 May 14, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 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.