Canadian application, no grantCanada
Preemergence weed control using corn gluten meal
CA 2418213 A1 · Owner: Christians, Nick · Inventors: Christians, Nick
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Corn gluten meal is used as a natural preemergence herbicide.
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 February 5, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 5, 2003
GrantedNo grant recorded
Term endedFebruary 5, 2023
Patent numberCA 2418213 A1
Classification (IPC)A01M21/00 +1 more
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.