Process for treating packaging containing residues to recover the valuable substances
CA 2109201 A1 · Owner: Pauls, Mathias · Inventors: Kellner, Torsten; Pauls, Mathias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for processing remnantholding packagings while recovering substances of value said, method including the following steps carried out in parallel: Inserting the packagings into an operational vessel 13 and extracting the residues using a solvent; Transferring the residue-containing solution from the operational vessel 13 into a sump; Concentrating the residue-holding solution in the sump while evaporating the solvent in an evaporation station 19; Condensing the evaporated solvent in a condensing station 20; Recycling the solvent from a recycling station 22 into the operational vessel 13; and, adequate enrichment followed by recovering the residues in …
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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 April 23, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2014.
- 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.