Method for manufacturing gum base
CA 2199607 C · Owner: Townsend, Donald · Inventors: Song, Joo; Townsend, Donald
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 continuous process of making a chewing gum base which provides a method for cooling at least certain sections of the mixer (extruder) in a cost effective and energy efficient manner. To this end in an embodiment, the present invention provides a method of continuously compounding chewing gum base in an extruder comprising the steps of: feeding into the extruder the necessary components to create a desired gum base; and adding to the extruder, at a desired location a gum base component, at , ambient temperature that has a sufficient thermal capacity to cool at least a portion of the contents of the extruder to a desired temperature.
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 13, 1995 and granted June 25, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 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.