Hydrophobic extracted neem oil - a novel insecticide and fungicide
CA 2013754 C · Owner: W.R. Grace & Co.-Conn. · Inventors: Walter, James Frederic; Locke, James Charles; Larew, Hiram Gordon, Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel insecticide and foliar fungicide derived from a neem seed extract comprising neem oil which is substantially free of azadirachtin and salannin said neem, oil being prepared by extracting dried coarsely ground, neem seeds with a non-polar hydrophobic solvent to obtain, a neem oil extract and then removing the solvent to, obtain the neem oil. These neem oil pesticides exhibit the ability to repel insects from plant surfaces prevent, fungal growth, and kill insect and fungal pests at various life stages.
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 April 3, 1990 and granted February 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 3, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 2012.
- 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.