Process for the production of soluble instant coffee in powder form
CA 2080503 C · Owner: Societe Des Produits Nestle S.A. · Inventors: Schlecht, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of soluble instant coffee in powder form by split extraction of ground roasted coffee in percolation cells to produce a first liquid extract from the atmospheric stage (1) and a second liquid extract from the pressure stage (2), the first liquid extract then being evaporated to a dry matter concentration above 35% by weight and the second liquid extract being evaporated to a dry matter concentration below 25% by weight the two, liquid extracts then being mixed the evaporation vapours, of the first liquid extract being condensed and concentrated and the concentrate obtained being reintroduced into the process for converting the mixture into soluble coffee powder. …
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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 October 14, 1992 and granted October 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 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.