2,4-diaminopyrimidines
CA 1248952 A · Owner: Bayer Aktiengesellschaft · Inventors: Kuhle, Engelbert; Eue, Ludwig; Schwamborn, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New herbicidally active 2,4-diamino pyrimidines of the formula, wherein R1 is hydrogen or halogen R2 is an optionally halogen-, substituted C1-C6-alkyl or is halogen or C1-C6-alkoxy; R3 is hydrogen or C1-C6-alkyl Y is oxygen or sulfur; and Z is a branched or unbranched C2-C10-alkylene. The new compounds can be employed as or in weedkillers.
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 January 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2006.
- 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.