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Expired Canadian patentCanada

Oxysulfonyl urea acat inhibitors

CA 2094808 C · Owner: Sliskovic, Drago Robert · Inventors: Sliskovic, Drago Robert; Picard, Joseph Armand

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Novel compounds of formula (I), wherein R is hydrogen a straight or branched , alkyl group having from 1 to 8 carbon atoms or benzyl; wherein each of R1 and R2 is hydrogen an aralkyl group, a , straight or branched hydrocarbon group having from 1 to 20 carbon atoms and may be saturated or unsaturated an alkyl group , of from 1 to 6 carbon atoms wherein the terminal carbon is substituted, the group -(CH2)p-Q wherein p is zero to three and Q is a 5- or 6-membered monocyclic or fused bicyclic heterocycle, phenyl or NR1R2 taken together form a monocyclic heterocyclic ring, and R3 is phenyl, substituted phenyl, naphthyl, substituted naphthyl -(CH2)p-Q wherein p and Q are as , defined above an …

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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 5, 1991 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 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.
FiledNovember 5, 1991
GrantedOctober 7, 2003
Term endedNovember 5, 2011
Patent numberCA 2094808 C
Classification (IPC)C07C311/54 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedNov 5, 1991Patent grantedOct 7, 2003Term endedNov 5, 2011

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.