Rapidly dissolving oral dosage form
CA 2181990 C · Owner: Davies, John Desmond · Inventors: Davies, John Desmond; Allen, Loyd V. Jr.; Wang, Bingnan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention concerns a particulate support matrix a solid dosage form made therefrom, and processes for making such support matrices and dosage forms, which desintegrate or dissolve in a matter of just a few seconds once placed into the oral cavity. First a porous particulate powder which will serve as the tablet support matrix is produced. In the second step the pharmaceutical, for example, an antihistamine decongestant, or antibiotic is combined with the powder. Other additives may also be added to the mixture. In the third step the mixture is formed into a tablet. Finally in the fourth step, a coating may be applied to the outer surface of the tablet to enhance the intactness …
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 January 24, 1995 and granted September 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 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.