Method and device for applying a liquid to a crop
CA 2054541 A1 · Owner: Van Steen, Henricus J.M. · Inventors: Van Steen, Henricus J.M.; Van Steen, Henricus J.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for applying a liquid to a crop (8;13) according to the invention comprises of moving a body (2) containing the liquid over the crop (8;13) such that the body (2) comes at least partially into liquid transferring contact with the crop (8;13). Plants (13;8;23) not for treatment with the liquid may be shielded from the body (2). Another liquid may simultaneously be applied to the shielded plants. The method is preferably performed using a device comprising a displaceable frame (1;21;31) having arranged thereon at least one liquid transfer body (2) connected to a container (16) for the liquid. The body (2) may have a flexible part (12), for instance a textile material. The device may …
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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 30, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2013.
- 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.