Petroleum wax-free chewing gums having improved flavor release
CA 2130575 C · Owner: Wm. Wrigley Jr. Company · Inventors: Reed, Michael A.; Song, Joo H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A petroleum wax-free chewing gum with enhanced flavor release particularly chewing gums with increased perception of breath freshening, are disclosed. Enhanced flavor release is obtained with wax-free chewing gums where the Solubility Parameter defined: as , of at least 5 % of the flavoring agent is at least 0.5 units greater than or less than, the average, weighted Solubility Parameter of the gum base used to formulate the wax-free chewing gums of our invention. The greater the difference in Solubility Parameter of flavoring ingredients to the average weighted Solubility Parameter of the wax-free gum bases the greater the tendency for enhanced flavor release.
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 March 2, 1993 and granted August 11, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 2, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 2015.
- 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.