Synergistic herbicidal compositions comprising herbicides from the group of the hydroxyphenylpyruvate dioxygenase inhibitors
CA 2388745 C · Owner: Willms, Lothar · Inventors: Hacker, Erwin; Bieringer, Hermann; Van Almsick, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A synergistic herbicidal composition comprising: (A) the compound (A4):, (see formula A4); and (B) iodosulfuron, wherein the composition comprises (A):(B) in a ratio by weight of , from 1:2000 to 2000:1. The activity of the composition is superior to that of the , herbicides applied on their own.
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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
- Filed October 20, 2000 and granted September 25, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2022.
- 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
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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.