Roasted coffee extract decaffeination method
CA 1253737 A · Owner: General Foods Corporation · Inventors: Kaleda, William W.; Zeller, Bary L.; Saleeb, Fouad Z.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roasted coffee extract decaffeination method providing a soluble coffee of improved flavor is disclosed. A roasted coffee extract is contacted with a caffeine solvent so that caffeine and a lesser amount of non-caffeine solubles is transferred to the solvent. The two liquids are separated and the caffeine solvent is typically concentrated. The concentrated solvent is then contacted with an aqueous caffeic acid suspension so that caffeic acid/caffeine complex crystals grow in the water phase. The complex crystals are filtered and the then at least partially decaffeinated caffeine solvent is separated from the water phase. Contact of the caffeine solvent and an aqueous caffeic acid …
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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
- Granted May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
- 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.