Process and apparatus for the agglomeration of hydrolytically sensitive substances by means of steam
CA 2201808 A1 · Owner: Maasz, Joachim Martin · Inventors: Maasz, Joachim Martin; Walter, Reinhardt; Uhlemann, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the process for the agglomeration of slightly soluble and hydrolytically sensitive substances, a powder of the slightly soluble substance is conducted together with at, least one water-soluble binder in free fall through a steam atmosphere at temperatures between 85°C and 105°C essentially without the action of compacting forces. In this process, the residence time in the steam atmosphere is approximately 0.5 to 10 seconds. The agglomerates formed are then dried in free fall so that small solid bridges form, from the binder liquid bridges formed at the points of contact between the primary particles. In a following integrated fluidized-bed dryer the final drying then takes place, to a …
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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 April 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2019.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.