Sulphonylbenzyl-substituted imidazoles
CA 2090274 A1 · Owner: Knorr, Andreas · Inventors: Kramer, Thomas; Stasch, Johannes-Peter; Kazda, Stanislav
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sulphonylbenzyl-substituted imidazoles A b s t r a c t, Sulphonylbenzyl-substituted imidazoles can be prepared by first reacting imidazolylaldehydes with sulphonylbenzyl compounds and then oxidising or reducing the aldehyde function in the customary manner. The sulphonylbenzyl-substituted imidazoles can be used as active compounds in medicaments. Le A 28 926 - US
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 February 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 2015.
- 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.