Prodrugs of imidazole derivatives, for use as proton pump inhibitors in the treatment of e.g. peptic ulcers
CA 2489361 A1 · Owner: Sato, Fumihiko · Inventors: Banno, Hiroshi; Sato, Fumihiko; Kamiyama, Keiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An imidazole compound represented by the formula (I) a salt thereof and a , compound of the formula (V) which is one of the intermediates thereof. wherein each symbol is as defined in the present specification. The compound of the present invention shows a superior anti-ulcer activity a gastric acid , secretion inhibitory action a mucosa-protecting action, an anti-Helicobacter pylori action and the like. Since it shows low toxicity the compound is , useful as a pharmaceutical product.
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 June 13, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 2025.
- 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.