Continuous chewing gum manufacturing from base concentrate
CA 2199604 C · Owner: Wm. Wrigley Jr. Company · Inventors: Broderick, Kevin B.; Tyrpin, Henry T.; Townsend, Donald J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making chewing gum includes the steps of: a) preparing a gum base concentrate having a composition useful for preparing a variety of finished gum bases and chewing gums; and b) combining the gum base concentrate with remaining gum base ingredients, and other chewing gum ingredients in a single efficient , continuous mixer.
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 August 31, 1995 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 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.