Pressing not delayed release of active compound, process for its production and use of polyhydroxybutyric acid for the production of such a pressing
CA 2030870 A1 · Owner: Korsatko-Wabnegg, Brigitta · Inventors: Korsatko, Werner; Korsatko-Wabnegg, Brigitta
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pressing containing homo- and/or copolymers of D(-)-3-hydroxybutyric acid, at least one solid disintegrant and at least one solid pharmaceutical active compound, process for its production and the use of homoand/or copolymers of D(-)-3-hydroxybutyric acid for the production of such a pressing.
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 26, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 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.