Use of edible film to prolong chewing gum shelf life
CA 2118223 C · Owner: Meyers, Marc A. · Inventors: Meyers, Marc A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of prolonging the shelf life of stick chewing gum and a shelf stable , chewing gum prepared according to the method, are provided. Chewing gum sheet is coated on both sides with an aqueous solution of an edible film forming agent which, when partially dried, serves as an adhesive. A layer of wax is then applied to each of the layers of edible film forming agent. Stick chewing gum prepared according to the method of the invention does not absorb or lose moisture as fast as conventional, uncoated chewing gum sticks.
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 20, 1993 and granted November 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 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.