Insecticidal composition and method of preparing the same
CA 1051775 A · Owner: Hedges Kenneth B. · Inventors: Hedges Kenneth B.; Belford, William R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-poisonous insecticidal composition is disclosed in which inorganic particles such as diatomaceous earth have a sorptive silica gel adhered to the surface thereof. The insecticidal composition is preferably produced by forming the sorptive silica gel in situ in the presence of such inorganic particles.
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 April 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 1996.
- 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.