Method for the preparation of selectively-substituted corroles and new substituted corroles
CA 2452644 C · Owner: Saltsman, Irena · Inventors: Gross, Zeev; Mahammed, Atif; Saltsman, Irena
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Corroles of formula I, wherein Ar is aryl or heteroaryl; M is absent or is a metal selected from Al, Ga, Co, Mn, Fe Ru, Sn, Cr or Rh; E2, E3 and E17, the same or different, each is H, SO2Cl, SO3H SO2NR1R2, CO2H, CO2R, COCl, CONR1R2, CHO or NO2 R is alkyl or aryl, and R1 and R2, the same or different each is H, alkyl, aryl or together with the N atom to which they are attached form a saturated 5-6 membered ring optionally containing a further heteroatom selected from O, S and N; and E18 is H or CHO; or E3 and E18 are H and E2 and E17 are each SO2, both SO2 groups being linked by a bridge R3N(R4)-phenyl- (R4)NR3, wherein R3 is H, alkyl, phenyl or aralkyl and R4 is alkylene; and , …
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 July 1, 2002 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 1, 2024.
- 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.