Highly active sulphonyl urea preparations exhibiting rapid or controlled release of the active substance, and method of producing them
CA 2173366 A1 · Owner: British Technology Group Limited · Inventors: Keller, Manfred; Bauer, Kurt H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to highly effective preparations of sulphonylurea derivatives which release the active substance rapidly or in a controlled manner. Included here are liquid and rapid-release or modified-release solid pharmaceutical preparations which are characterised in that they contain one or more sulphonylurea derivative(s) as active substance(s), alcohol one or, more polyol(s) with the exception of polyethylene glycol and/or one or more sugar alcohol(s), previously dissolved in water or an alcohol/water mixture, an alkaline substance and optionally suitable pharmaceutically acceptable auxiliary agents and flavourings and optionally further pharmaceutically active substances. The …
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 October 12, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2016.
- 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.