Polyvinyl acetate encapsulation of crystalline sucralose for use in chewing gum
CA 2045598 C · Owner: Broderick, Kevin B. · Inventors: Yatka, Robert J.; Song, Joo H.; Zibell, Steven E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sucrose-containing chewing gum ingredient is prepared by homogeneously mixing about 50 to about 97 parts by weight heat-softened polyvinyl acetate with about 3 to about 50 parts by weight crystalline sucralose. The mixture is then cooled. A chewing gum is prepared by mixing the sucralose-containing ingredient gum base, a bulking agent and flavor to make a chewing gum 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 November 21, 1990 and granted July 22, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2012.
- 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.