Spherical telithromycin clusters, method for the production and use thereof in the preparation of pharmaceutical forms
CA 2382497 C · Owner: Rognon-Ravaux, Valerie · Inventors: Rognon-Ravaux, Valerie; Godard, Jean-Yves
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to spherical telithromycin clusters and to a method for the production thereof characterized in that a telithromycin crystal suspension is prepared said crystals are coated with a telithromycin insoluble phase which gradually crystallizes. The spherical telithromycin clusters are used in the preparation of micro-capsules.
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 August 28, 2000 and granted June 28, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 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.