Coffee roasting method and apparatus
CA 1285174 C · Owner: Mahlmann, James P. · Inventors: Schechter, Steven M.; Brandlein, Lawrence S.; Mahlmann, James P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Coffee is produced by first suspending a bubbling bed thereof under conditions which avoid popping in a heated medium wherein the heating gas is present in excess of 10:1 gas to coffee, the gas being less than 630°F, and thereafter exposing the coffee to a further charge of hot gas at a comparable gas to coffee ratio to complete the roast, the second charge of air being at a temperature equal to or less than the first charge. The roasted coffee which is produced has a roasted whole bean density of from 0.28 to 0.34 gms./cc. When the roasted whole beans are suitably ground, a roasted and ground coffee of 11 to 13.5 oz. per 1000 cc. is produced.
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 June 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2008.
- 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.