Process for manufacturing a pharmaceutical chewing gum
CA 2637880 A1 · Owner: Josman Laboratories, Inc. · Inventors: Gubler, Scott A.; Athanikar, Narayan K.
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 process for preparing a chewing gum tablet in , which a chewing gum composition is cooled to a temperature at which the composition is , brittle, and the composition is ground while brittle to form a fine powder. In a preferred , process, the composition is cooled by mixing with a coolant such as solid , carbon dioxide, and the mixture is ground to a powder. The powder can be mixed with a pharmaceutical , active ingredient capable of topical absorption in the buccal cavity or in the mucous layer , of the upper or lower intestinal tract and formed into a tablet. Preferably, the mixture of the powder, pharmaceutical active ingredient and other additives …
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 June 2, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 2, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 2, 2022.
- 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.