Making dry coffee aroma gas with improved aroma characteristics
CA 2175890 C · Owner: Cormaci, Alice Mary · Inventors: Cormaci, Alice Mary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method for making dry coffee aroma gas with improved aroma characteristics A stream of moisture-containing coffee aroma gas is passed through and allowed to exit a desiccant bed of calcium sulfate granules wherein said granules initially contain less than about 0.5 % adsorbed moisture by dry weight of said granules. The stream of moisture-containing coffee aroma gas is discontinued after the adsorbed moisture content of the calcium sulfate granules increases from less than about 0.5 % to at least about 4.3 % by dry weight of said granules, but before the moisture content of the stream of desiccant-treated coffee aroma gas exiting the desiccant bed exceeds about 1000 ppm. All …
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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 May 10, 1994 and granted October 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2016.
- 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.