Flavone derivatives
CA 1330994 C · Owner: Recordati S.A. Chemical And Pharmaceutical Company · Inventors: Pennini, Renzo; Cazzulani, Pietro; Nardi, Dante
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title, Flavone derivatives, Abstract, New flavone derivatives of general formula: (I), wherein R and R1 can be the same or different and are selected from alkyl containing 1 to 4 carbon atoms, hydroxyalkyl having 1-4 carbon atoms formylalkyl or cyanoalkyl, R2 and R3 could be the same or different and are selected from straight or branched alkyl containing 1 to 6 carbon atoms straight or branched-chain alkenyl containing 2 to 6 carbon atoms alkynyl, containing 2 to 6 carbon atoms cycloalkyl having 5-7 carbon atoms, aralkyl phenyl, cyanoalkyl, haloalkyl, mono- or poly-hydroxyalkyl mono-alkoxyalkyl, alkylthioalky, alkylsulfonylalkyl mono-acyloxyalkyl, acylalkyl, and, straight or branched-chain …
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 July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
- 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.