Insecticidal formulations
CA 1169772 B · Owner: Imperial Chemical Industries Plc · Inventors: Middleton, Michael R.; Coffee, Ronald A.; Young, Brian W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Insecticidal formulations comprising a solution of from 0.5 to 50% by weight permethrin and like compounds in an organic solvent medium, the formulation having a resistivity at 20°C in the range 106 to 101° ohm cm and, a viscosity at 20°C in the range 1 to 50 centistokes.
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
- Granted October 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 1998.
- 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.