Condensed thiadiazole derivative, method of its production, and use thereof
CA 2092390 A1 · Owner: Terashita, Zen-Ichi · Inventors: Terashita, Zen-Ichi; Fujisawa, Yukio; Momose, Yu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1) a compound represented by the following formula(I): (I), wherein R represents a hydrocarbon group or heterocyclic group which may be substituted for; the ring A represents a pyridine ring having a substituent or a thiazole ring which may be substituted for; or a pharmaceutically acceptable salt thereof, and a method of its production and, (2) an endothelin receptor antagonist an cathepsin B inhibitor or a bone, resorption suppressor comprising as an active ingredient a compound represented by the following formula (I'): (I'), wherein R has the same definition as in term (1); the ring A' represents a pyridine ring or thiazole ring which may be substituted for; or a pharmaceutically …
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 March 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 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.