Therapeutic preparations
CA 2071087 A1 · Owner: Barker, Andrew J. · Inventors: Barker, Andrew J.; Davies, David H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a pharamceutical composition which comprises known or novel quinazoline derivatives of the formula I wherein, for example, R1 is hydrogen, trifluoromethyl or nitro n is 1, and R2 is halogeno, trifluoromethyl nitro, cyano, (1-4C)alkyl, (1-4C)alkoxy N-(1-4C)alkylamino, N,N-di-1(1-4C)alkylamino (1-4C)alkylthio, (1-4C)alkylsulphinyl or (1-4C)alkylsulphonyl; and pharmaceutically-acceptable diluents or carriers thereof; the novel quinazoline derivatives and a process for their preparation; and the use of the receptor tyrosine kinase inhibitory properties of both the known and novel quinazoline derivatives in the treatment of cancer.
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 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2014.
- 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.