Pharmaceutical compositions containing 4-substituted imidazoles to be administered transdermally
CA 2110162 C · Owner: Orion-Yhtyma Oy · Inventors: Lammintausta, Risto; Jalonen, Harry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a transdermal preparation comprising a therapeutically active compound of formula (I) or (II) where R1, R2 and R3 which can be the same or different are H CH3, C2H5 or Cl; , X is CH=CH or (CH2)n where n is 1 to 3 or X is -C(OR5)H- where R5 is methyl or ethyl; and R4 is hydrogen or a straight alkyl of 1 to 4 carbon atoms. The transdermal administration of the compounds can be accomplished by preparations in the form of ointments, emulsions, lotions, solutions; creams, gels or transdermal patches.
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 May 27, 1992 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2014.
- 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.