Process for conditioning of water-soluble substances
CA 2106975 C · Owner: Bystrom, Katarina · Inventors: Jakupovic, Edib; Trofast, Jan; Trofast, Eva
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for providing water-soluble micronized substances which can be , produced, stored and used while maintaining the aerodynamic properties required for inhalation of such substances which , process is carried out by: a) reducing if necessary, the residual water from the micronized substance by drying optionally at an elevated temperature and/or vacuum; b) conditioning said dried, micronized substances with a solvent; and c) eliminating residual solvent by storing in a dry place like vacuum or by purging with an inert gas.
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 March 24, 1992 and granted March 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2014.
- 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.