Method for refining mint oils and chewing gum made from same
CA 2189954 C · Owner: Greenberg, Michael J. · Inventors: Johnson, Sonya S.; Greenberg, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method for refining peppermint oil containing compositions. Additionally the present invention, provides a method for making chewing gum having a peppermint flavor. To this end a method for refining a peppermint oil containing composition that includes sulfur compounds to remove at least a portion of the sulfur compounds is provided. The method comprises the step of subjecting the composition to a distillation process that removes at least a portion of the sulfur compounds from the composition but does not remove more than 3 % of the total composition.
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
- Filed April 21, 1995 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 21, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2017.
- 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.