Imidazole compounds, their preparation and use
CA 2092211 C · Owner: Neurosearch A/S · Inventors: Christophersen, Palle; Peters, Dan; Nielsen, Elsebet Ostergaard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses compounds of the formula wherein, X is C or N;, Y is C or N;, R11 is hydrogen hydroxy, or alkoxy;, R12 and R13 are each independently hydrogen; halogen; CF3; CN; OH; alkyl; cycloalkyl; cycloalkylalkyl; alkenyl; alkynyl; alkoxy; phenylalkyl; amino; nitro;, sulphamoyl; pipiridyl; pyrrolldinyl; acyl; CO2H; CO2-alkyl; CO-amino; NH-COalkyl;, phenylsulphonyl which may be substituted with halogen; CF3 CN, OH, alkyl, alkenyl, alkynyl, alkoxy amino, or nitro; phenyloxy which may be substituted with, halogen, CF3, CN, OH, alkyl, alkenyl alkynyl, alkoxy, amino, or nitro;, phenylamino which may be substituted with halogen CF3, CN, OH, alkyl, alkenyl, alkynyl, alkoxy …
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 March 23, 1993 and granted August 26, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 23, 2015.
- 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.