Combinations of anthelmintically active agents
CA 2096346 C · Owner: Beecham Group P.L.C. · Inventors: Hood, John Dick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pharmaceutical compositions comprising a compound of formula (I) in which R , is optionnally substituted phenyl; C3-8 cycloalkyl; C5-8 cylcoalkenyl; C1-8 alkyl which may be straight or branched; C2-8 alkenyl which may be straight or, branched; 5- or 6- membered heterocyclyl; or optionally substituted phenyl C1- 4 alkyl, each of Y and Z, which may be the same or different, is oxygen or sulphur; and X is a bond -CH2-, or oxygen; , and at least one other anthelmintically active compound which is an avermectin or milbemycin are useful in the treatment of , helminthiasis.
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 November 11, 1991 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 11, 2013.
- 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.