Sulphamide derivatives as metalloproteinase inhibitors
CA 2114623 A1 · Owner: Morphy, John Richard · Inventors: Beeley, Nigel Robert Arnold; Millican, Thomas Andrew; Porter, John Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (1) are described wherein R represents a -CONHOH, carboxyl (-CO2H), esterified carboxyl or -P(O)(X1R8)X2R9 group, where X1 and X2 which may be the same or, different is each an oxygen or a sulphur atom and R8 and R9, which may be the same or different each represents a hydrogen atom or an optionally substituted alkyl, aryl or aralkyl group; R1 represents a hydrogen atom or an optionally substituted alkyl alkenyl, aryl, aralkyl, heteroaralkyl or heteroarylthioalkyl group; R2 represents an optionally substituted alkyl alkenyl, cycloalkyl, cycloalkylalkyl, aryl aralkyl, aralkoxy, or aralkylthio, group or an amino (-NH2), substituted amino, carboxyl (-CO2H) or esterified …
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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 3, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 3, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 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.