Pyrimidine derivatives
CA 1071627 A · Owner: Ludwig Heumann And Co. · Inventors: Prikryl, Jaroslav; Fritschi, Edgar; Liebenow, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides 2,4-diamino-5-thiobenzyl pyrimidines of the formula, wherein R denotes hydrogen an alkyl group, a lower alkoxy, group or a halogen atom and R' denotes an alkyl group. The invention provides such novel pyrimidine derivatives processes for the preparation thereof, pharmaceutical compositions containing them, their use in pharmacy and their pharmacologically acceptable acid addition salts.
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
- Granted February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
- 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.