Improved mixture of useful materials for stock culture in soils that are infected with nematodes
CA 2348952 A1 · Owner: Hallmann, Johannes · Inventors: Hallmann, Johannes; Von Tapavicza, Stephan; Sikora, Richard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is the use of (a) phosphorus compounds containing at least partially lipophilic organic radicals with (b) urea and/or urea derivatives in selected ratios (a): (b). According to the invention (c) oligomer and/or polymer , chitosans are added in a simultaneous or time-variable manner in a preferably aqueous form of preparation as an additive to the soil for biological control of phytoparasitic nematodes in said soil by reinforcing the antagonistic potential of the soil, especially by reinforcing the growth of antagonistic and/or nematicide rhizospheric bacteria and/or corresponding strains of myccorhiza, while at the same time reinforcing the growth of indigenous stock …
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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 16, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2021.
- 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.