Derivatives of phenyl-4 quinazoline
CA 1236102 A · Owner: Sanofi · Inventors: Biziere, Kathleen; Halot, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel derivatives of 4-phenyl quinazoline of general formula: (I), in which R2 is H or halogen or R, is a hydroxyamino derivative of type -, in which at least R3 or R4, comprises an OH group or in which R5 comprises, an OH group or it also relates to the drugs which may be used as minor tranquilizers hypnotics and antiepileptics containing a product of formula (1).
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 May 3, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2005.
- 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.