Arylhydrazones
CA 1340962 C · Owner: Ciba-Geigy Ag · Inventors: Capraro, Hans-Georg; Stanek, Jaroslav; Frei, Jorg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula I, (see formula I) wherein A, X1, X2, X3, X4, Y, Z and R1 to R6 have the meanings given in the description, have valuable pharmaceutical properties and are effective especially against tumours. They are prepared in a manner known per se.
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
- Granted April 18, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 18, 2017.
- 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.