Continuous extraction process
CA 1099581 A · Owner: Societe Des Produits Nestle S.A. · Inventors: Gasau, Jacob
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the continuous extraction of roasted coffee, which comprises introducing dry finely ground coffee at a charging station in the form of a bed with a thickness of from 0.5 to 15 cm and displacing the bed along a closed circuit up to a discharging station by way of at least one extraction station where a stream of extraction liquid is passed through the bed whilst a pressure gradient of the liquid on the bed is maintained. - 1 -
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
- Granted April 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 21, 1998.
- 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.