Topically administrable pharmaceutical preparations
CA 2020557 A1 · Owner: Green, Jonathan · Inventors: Voellmy, Carlo; Ferrini, Pier Giorgio; Stahl, Peter Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
4-17658/+, Topically administrable pharmaceutical preparations Abstract, The invention relates to topically administrable pharmaceutical preparations containing pharmaceudcally acceptable methanediphosphonic acid derivatives of formula (I), and their salts, wherein each of R1 and R2 is halogen or wherein Rl is hydrogen and R2, is Ar-S- or Het1-NHin which Ar is unsubstituted or substituted phenyl and Het1 is unsubsdtuted or substituted, monocyclic 5- or 6-membered monoaza-, diaza- or, thiaza-aryl that is bonded via a ring carbon atom or wherein R1 is hydrogen or hydroxy, and R2 is -A-R3 in which A is alkylene and, on the one hand R3 is Het2, which is Hetl, bonded via a ring carbon or ring …
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 July 5, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 5, 2012.
- 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.