Closed-loop variable rate applicator
CA 2118621 A1 · Owner: Ag-Chem Equipment Co. Inc. · Inventors: Monson, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A closed-loop fertilizer application system capable of determining a soil prescription in neat real-time and dispensing, fertilizer to the soil scene as a function of the soil prescription, The closed loop application system does not require the use of maps or navigation systems, but rather ascertains a, soil type and chemical composition on the go. In the preferred embodiment, the application system implements a spectrograph implementing the technology of spectroradiometry to determine soil type and present fertilizer composition in near real-time. An expert system determines the soil prescription based on the soil type and current fertilizer levels, and controls the dispensing rate of the …
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 March 9, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 2016.
- 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.