Fertilizers containing growth activators for plants
CA 1045844 A · Owner: Rhone-Poulenc Industries · Inventors: Benois, Jean-Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fertilizers containing the elements nitrogen phos-, phorus and potassium, and organic compounds acting as growth activators for plants. These organic compounds comprise compounds of high molecular weight, which result from the polycondensation of naphthoquinone and maleic anhydride and which are added to the fertilizers at a rate of from 0.5% to 10% by weight of the total fertilizer. Incorporation can occur at the stage of providing the raw materials or at the stage of granulation, the fertilizer thus activated being applied in known manner.
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 January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 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.