Hydroxamic acid derivatives
CA 2285906 A1 · Owner: Maclin, Keith M. · Inventors: Jackson, Paul F.; Slusher, Barbara S.; Maclin, Keith M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to hydroxamic acid derivatives of formula (I) or a pharmaceutically acceptable salt or hydrate thereof wherein X is (II) or , (III); Y is CR1R2 NR3 or O; R, R1, R2 and R3 are independently selected from the group consisting of hydrogen, C1-C9 straight or branched chain alkyl C2-, C9 straight or branched chain alkenyl C3-C9 cycloalkyl, C5-C7 cycloalkenyl , and Ar pharmaceutical compositions comprising such derivatives and methods , of using such derivatives to inhibit NAALADase activity to treat a glutamate , abnormality and to treat a prostate disease in an animal.
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 April 2, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 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.