Phosphonate compounds
CA 2393410 C · Owner: Kini, Ganesh D. · Inventors: Kini, Ganesh D.; Beadle, James R.; Hostetler, Karl Y.
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 phosphonate compounds having the formula: (see above formula), wherein R1, R1', R2 R2', X, and m are as defined in the specification; R3 is a pharmaceutically active phosphonate bisphosphonate or a phosphonate , derivative of a pharmacologically active compounds, linked to a functional group on optional linker L or to an , available oxygen atom on C a; L is a valence bond or a bifunctional linking molecule of the formula -J- (CR2)t-G-, wherein t is an integer from 1 to 24 each of J and G is independently -O-, -S- -C(O)O-, or -, NH-, and R is -H, substituted or unsubstituted alkyl or alkenyl; and, n is 0 or 1. , Also provided are compositions containing …
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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 December 4, 2000 and granted October 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2022.
- 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.