Anti-cancer compounds
CA 2106583 A1 · Owner: Jackman, Ann L. · Inventors: Jodrell, Duncan I.; Bisset, Graham M. F.; Jackman, Ann L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Quinazolines of formula (I) wherein R1 is hydrogen or amino, or R1 is alkyl alkoxy or alkylthio each of up to 6 carbon atoms; or R1 is aryl or aryloxy each of up to 10 carbon atoms; or R1 is halogeno, hydroxy or mercapto; or R1 is alkyl of up to 3 carbon atoms which bears one or more substituents selected from halogeno, hydroxy and alkanoylamino each of up to 6 carbon atoms; or R1 is alkoxy of up to 3 carbon atoms which bears one or more substituents selected from hydroxy and alkoxy of up to 6 carbon atoms; wherein R2 is hydrogen or alkyl alkenyl, alkynyl, hydroxyalkyl, alkoxyalkyl mercaptoalkyl, alkylthioalkyl, halogenoalkyl cyanoalkyl, aminoalkyl, alkylaminoalkyl dialkylaminoalkyl, …
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 March 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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.