Polylactide in a purified state, method for the production therof, and pharmaceutical compositions
CA 2048200 C · Owner: Prikoszovich, Walter · Inventors: Prikoszovich, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polylactide in a purified state, which meets the requirements of - the colour strengths of reference solutions B2 - B9 of the brown colour test of the European Pharmacopoeia 2nd Edition, (1980) part I, Section V, 6.2 and - containing one or more metals in cationic form the metal, ion(s) having a concentration of at most 10 ppm. The polylactide is especially suitable for use as microparticles or implants, and contains preferably a hydrophilic drug like, octreotide or a liphilic drug like bromocriptine.
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 July 31, 1991 and granted June 29, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2013.
- 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.