Bis-sulfonomides hydroxamic acids as mmp inhibitors
CA 2274889 A1 · Owner: Skaletzky, Louis L. · Inventors: Skaletzky, Louis L.; Jacobsen, Eric Jon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a compound of formula (I) or pharmaceutically acceptable salts thereof wherein R1 and R2 are the same or different and are C1-10alkyl, phenyl, hetero-aryl, or phenyl substituted with C1-4alkyl OR3, NHR3, CONHR3, NHCOR3, or halo; wherein R3 is H or C1-4alkyl; and n is 1, 2, 3, 4, 5 or 6. The compounds are inhibitors of matrix metalloproteinases involved in tissue degradation.
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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 January 9, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 9, 2020.
- 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.