Patent Yard Sign in
Canadian application, no grantCanada

Novel sulfonamide-substituted pyrazolopyridine derivatives

CA 2429313 A1 · Owner: Feurer, Achim · Inventors: Stasch, Johannes-Peter; Dembowsky, Klaus; Lang, Dieter

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

The invention relates to novel pyrazolopyridine derivatives of formula (I) wherein R1 represents H, Cl or NH2, and R2 and R3 form together with the , heteroatoms to which they are bonded a five to six-membered heterocycle which can be saturated or partially unsaturated can optionally contain at least one , other heteroatom from the group N O, S and can be optionally substituted. The invention also relates to salts, isomers and hydrates of said derivatives in , the form of stimulators of soluble guanylate cyclase and as agents for treating cardiovascular diseases, hypertonia thrombo-embolic diseases and , ischaemia sexual dysfunction, inflammations, and diseases of the central nervous …

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 November 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 12, 2001
GrantedNo grant recorded
Term endedNovember 12, 2021
Patent numberCA 2429313 A1
Classification (IPC)C07D471/04 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedNov 12, 2001Term endedNov 12, 2021

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.