Diphosphonate therapeutic compounds
CA 2267984 A1 · Owner: Hartmann, John F. · Inventors: Kovacs, Arpad; Hornyak, Miklos; Sztaricskai, Ferenc J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel compounds having utility in achieving the foregoing objects of the invention are prepared by reacting a 2,2-bis-(disubstituted-phosphoryl)ethylsulfanyl-acetic acid compound with a pharmaceutically active chemical entity effective to treat the underlying disease state or with nonpharmaceutical entities such as pesticides insecticides, fungicides or , poisons for vermin.
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 October 9, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2019.
- 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.