Beneficial waste sludge product for control of plant nematodes
CA 2273402 C · Owner: Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Agriculture And Agri-Food · Inventors: Topp, Edward; Welaky, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of reducing the damaging effect of Tylenchid plant parasitic nematodes on the plant hosts by applying to the plant seed or locus thereof, a nematode controlling effective amount of a beneficial waste sludge. The invention is of particular value in reducing the damaging effect of soybean cyst nematode. The sludge may be applied preferably as an in-furrow with seeding treatment.
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 May 20, 1999 and granted November 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 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.