Crystalline sugar alcohol containing uniformly dispersed particulate pharmaceutical compound
CA 2030670 C · Owner: Duross, James W. · Inventors: Duross, James W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pharmaceutical composition comprising a crystalline sugar alcohol derived from at least one mono- or polysaccharide having uniformly dispersed within its crystal matrix particles of at least one pharmaceutically active compound is disclosed. Also disclosed is a method of producing such a uniformly dispersed pharmaceutical composition by the controlled crystallization of the molten sugar alcohol having the pharmaceutically active material dispersed therein.
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 November 22, 1990 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2012.
- 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.