Antiviral agents containing heteropolytungstate
CA 2086263 A1 · Owner: Birch, Christopher John · Inventors: Gust, Ian David; Marcuccio, Sebastian Mario; Holan, George
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Heteropolytungstate compounds of general formulae (I) wherein M , is Co, Fe, Zn, FeOA, FeO1/2; Cp represents an optionally substituted cyclopentadienyl residue; A is a monovalent or divalent cation or mixture of such cations; m is the number of cations necessary for electrical neutrality of the molecule; or pharmaceutically acceptable derivatives thereof. Pharmaceutical compositions or methods for the treatment or prophylaxis of retrovirus-associated infection which involve the use of such compounds.
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 June 28, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2013.
- 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.