Taste mask coatings for preparing chewable pharmaceutical tablets
CA 2079934 C · Owner: Mcneil-Ppc, Inc. · Inventors: Papile, Susan M.; Roche, Edward J.; Freeman, Eleanor M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Chewable medicament tablets are made from coated rotogranules of a medicament wherein the rotogranules are formed from a granulation mixture of: medicament e.g. famotidine; binder, e.g. HPMC; and carrier e.g. lactose;, and the rotogranules are coated with cellulose acetate cellulose acetate butyrate or a combination thereof and hydroxypropyl cellulose. A process for making such tablets and a method of providing taste masking of medicaments utilizing such coated rotogranules.
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 October 6, 1992 and granted September 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2014.
- 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.