Pharmaceutical composition for rapid suspension in water
CA 2046679 C · Owner: Zema, Marco · Inventors: Zema, Marco; Mapelli, Luigi Giovanni; Marconi, Marco Giuseppe Raffaele
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pharmaceutical composition for rapid suspension in water. The invention provides a solid pharmaceutical composition for addition to water to produce a suspension of a drug comprising, a) a drug which is substantially water-insoluble or microencapsulated;, b) a thickening or suspending agent; c) a pharmaceutically acceptable acid; d) a pharmaceutically acceptable carbonate or bicarbonate; characterised in that the weight ratio of c + d : b is from 1 : 1:5 to 1 : 15 and the amount of c + d: is sufficient to obtain rapid hydration of the thickening or suspending agent b) when the composition is mixed with water such that a homogeneous suspension of the drug i.s obtained within 30 seconds. 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 July 10, 1991 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 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.