Pesticides comprising benzophenanthridine alkaloids
CA 2254727 A1 · Owner: Camas Technologies, Inc. · Inventors: Harkrader, Ronald J.; Meyer, Donald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a chemical composition useful in the chemical management of plant disease. The pesticides of the present invention incorporate benzophenanthridine alkaloids into formulations that are (1) residual and active for a period of time (2) are adhesive to plant surfaces, (3) have good spreading properties (4) are stable against photodeactivation (5) have low phytoxicity, and (6) are capable of penetrating plant tissues.
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 2, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 2, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2019.
- 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.