New pyrimidine-2,4,6-trione derivatives, processes for their production and pharmaceutical agents containing these compounds
CA 2442354 A1 · Owner: F.Hoffmann-La Roche Ag · Inventors: Leinert, Herbert; Geppert, Dagmar; Grams, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula I, wherein R1 represents a substituted or unsubstituted phenyl, phenoxy, phenylthio, phenylsulfenyl phenylsufonyl, phenylamino or , phenylmethyl residue R2 is hydrogen, R3 represents hydrogen or alkyl R4 , represents alkyl, aryl, aralkyl, heteryl or acyl and R2 and R3 and R4 form a , piperazin ring which can be substituted with metalloproteinase inhibitor , activity.
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 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2024.
- 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.