Process for the production of particles or powders
CA 2182786 C · Owner: Weidner, Eckhard · Inventors: Knez, Zeljko; Weidner, Eckhard; Novak, Zoran
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a novel process for the production of particles or powders, a substance or mixture of substances to be treated is provided in a pressure vessel. A compressible fluid is dissolved under pressure in the substance or mixture of substances provided, and the resulting solution is then decompressed so that particles form during the decompression. The particles which have formed are removed from the stream of decompressed compressible fluid.
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 February 14, 1995 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 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.