Benzimidazol derivatives and their production
CA 1256878 A · Owner: Takeda Chemical Industries, Ltd. · Inventors: Nohara, Akira; Maki, Yoshitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
24205-634, Benzimidazole Derivatives and Their Production Abstract of the Disclosure, The compound of the formula wherein R1 is hydrogen, fluorine, methoxy or trifluoromethyl, R2 is hydrogen or methyl, R3 is a C3-8 straight-chain or branched alkyl, and n denotes 0 or 1 or their pharmacologically acceptable salts is novel and useful for prophylaxis and therapy of digestive ulcers (e.g. gastric ulcer, duodenal ulcer) and gastritis.
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
- Granted July 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 4, 2006.
- 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.