Method of weed control
CA 2476604 A1 · Owner: The United States Of America, As Represented By The Secretary Of Agricul Ture · Inventors: Sekutowski, Dennis G.; Glenn, David Glenn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In one embodiment, the present invention relates to methods of reducing weed growth or reducing pests involving applying to plant producing media particulate materials to a depth of at least about 1 cm wherein the plant , producing media to the depth comprises about 1% by weight or more and about 25% by weight or less of particulate materials. In another embodiment the , present invention relates to methods of reducing weed growth involving applying to plant producing media or unwanted vegetation a film of particulate materials, wherein the film has a thickness of about 1 µm or more and about 5 mm or less.
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 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 10, 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.
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.