Process for the preparation of morphologically homogeneous forms of thiazole derivatives
CA 1265809 C · Owner: Richter Gedeon Vegyeszeti Gyar Rt · Inventors: Fekecs, Eva; Aracs, Zsuzsanna Nee Trischler; Peter, Imre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Two morphologically homogeneous forms of Famotidine chemical name: N-sulfamoyl-3-(2-guanidinothiazole-4-yl-methylthio)-propionamidine are disclosed namely form "A" and form "B". The two separate forms are prepared by selective crystallization or precipitation. Form "A" is particularly useful in capsulated form while, form "B" is well adapted to use in tabletted form.
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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
- Granted February 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 2007.
- 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.