Thiazole derivatives, processes for the preparation thereof and pharmaceutical composition comprising the same
CA 2025356 A1 · Owner: Fujisawa Pharmaceutical Co. Ltd. · Inventors: Takasugi, Hisashi; Inoue, Yoshikazu; Katsura, Yousuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compound of the formula:, wherein R1 is amino which may have suitable substituent(s), hydroxy, halogen, cyano acyl, heterocyclic thio, heterocyclic group or a group of the formula :, in which R4 is hydrogen, cyano or acyl and, R5 is amino or lower alkoxy, R2 and R3 are each hydrogen acyl or lower, alkyl which may have halogen; or R2 and R3 are linked together to form lower alkylene, Y is , or , in which R6 is, hydrogen or halogen and, A is bond or lower alkylene, provided that when R1 is amino which may have, suitable substituent(s) and A is bond; or R1 is lower, alkylthioureido and A is lower alkylene, then, Y is , and pharmaceutically acceptable salts thereof. These compounds and their …
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 September 14, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2012.
- 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.