2-amino-5-hydroxy-4-pyrimidones
CA 1310642 C · Owner: Walker, Frederick J. · Inventors: Lamattina, John L.; O'Neill, Brian T.; Walker, Frederick J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
F.C. 7235/A, 2-AMINO-5-HYDROXY-4-PYRIMIDONES Abstract, A compound of the formula, I or a pharmaceutically acceptable salt thereof wherein R1 is hydrogen; R2 is (C1-C15)alkyl (C3-C15)alkenyl, phenyl, substituted phenyl (C7-C20)-, phenylalkyl, or substituted (C7-C20)phenylalkyl wherein the substituents on the substituted phenyl and substituted phenylalkyl are independently one or two of fluoro, chloro, (C1-C3)alkyl, (C1-C3)alkoxy and, trifluoromethyl; or R1 and R2 together with the nitrogen atom to which they are attached form a pyrrolidinyl, substituted pyrrolidinyl piperidyl or, substituted piperidyl group wherein the substituents, on said substituted pyrrolidinyl and piperidyl groups are …
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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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 2009.
- 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.