Novel pesticidal compositions derived from neem oil and neem wax fractions
CA 2039918 C · Owner: Locke, James Charles · Inventors: Larew, Hiram Gordon, Iii; Walter, James Frederic; Locke, James Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel pesticide formulations prepared from neem seeds are disclosed. Two distinct fractions are derived from non-polar, hydrophobic solvent neem seed extracts which are substantially free of azadirachtin by removing the hydrophobic solvent and cooling the resulting neem oil to form a semi-solid neem wax fraction and a clarified neem oil fraction.
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 5, 1991 and granted January 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 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.