Benzothiazepine derivatives
CA 2080671 A1 · Owner: Shionogi & Co. Ltd. · Inventors: Iwaki, Kazumi; Yamamori, Teruo; Harada, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure:, compound of the formula: (I), wherein X is =N-A-R1 or =C(R1)R2; A is a single bond polymethylene or -CO-; R1 and R2 are each hydrogen C1-C6, alkyl, C3-C7 cycloalkyl, unsubstituted or substituted phenyl, optionally substituted benzhydryl or optionally, substituted 5 to 6 membered heterocyclic group; Y is hydrogen, halogen, C1-C6 alkyl, C3-C7 cycloalkyl C1-C6, alkoxy, optionally substituted phenoxy optionally, substituted benzyloxy, or optionally substituted benzyl; Z is hydrogen or acyl; n is an integer of from 2 to 6 and, pharmaceutically acceptable salt thereof. A pharmaceutical composition containing the compound, which is useful for treating hypertension and …
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 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2014.
- 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.