Method for protecting plant life from acidic atmospheric pollutants
CA 1283554 C · Owner: Lengyel, Albin D. · Inventors: Lengyel, Albin D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for treating a stand of coniferous trees growing by natural processes and exposed to an atmosphere containing nitrogen pollutant compounds to improve the resistance of the trees to damage by acid rain. The method comprises the step of foliarly applying a sugar and source of potassium of magnesium to the coniferous trees growing in the stand of trees exposed to the atmosphere.
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 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2008.
- 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.