Canadian application, no grantCanada
Phthalazinone derivatives as pde 4 inhibitors
CA 2388121 A1 · Owner: Timmermann, Hendrik · Inventors: Sterk, Jan Geert; Timmermann, Hendrik; Kley, Hans-Peter
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The compounds of formula (I) in which R1 R2, A, B and Ar have the meanings as , given in the description are novel effective PDe4 inhibitors.
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 October 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 24, 2000
GrantedNo grant recorded
Term endedOctober 24, 2020
Patent numberCA 2388121 A1
Classification (IPC)C07D237/32 +2 more
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.