Penem derivatives
CA 2088913 A1 · Owner: Alpegiani, Marco · Inventors: Alpegiani, Marco; Perrone, Ettore; Jabes, Daniela
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides compounds of general formula (I) wherein R1 is a hydrogen atom, a negative charge or an ester residue; R is: a) -(CH2)n-A-CO2H, -(CH2)n-A-SO3H or -(CH2)n-A-PO3H2, wherein n is either zero one or two and A is a, group -CH=CH- (either E or Z) -OCH2-, -SCH2- or -CHOH-; b), -(CH2)n-PO3H2 -(CH2)nSO2NHCN, -(CH2)nNHSO3H, -(CH2)nCONHSO2CH3 or -(CH2)nCONHSO2CF3 wherein n is , as defined above; c) -(CH2S)m-W-(CH2)nZ wherein W is an , arylene group or a heterocyclediyl group m is 0 or 1, n is as, above defined, and Z represents CO2H PO3H2, SO2NHCN, NHSO3H, CONHSO2CH3 or CONHSO2CF3; d) -Y-CH2 formula (II) wherein Y is O or NH and X is NH, N-OH or N-O-(CH2)n+1COOH wherein n is as …
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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 June 22, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 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.