Solubility compound fertilizer compositions
CA 2345952 C · Owner: Vetanovetz, Richard P. · Inventors: Vetanovetz, Richard P.; Peters, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dry solid fertilizer composition consisting of an unheated add mixture of a non-polymerized dry urea phosphate and a salt of micronutrient trace metal, the urea phosphate being present in an amount sufficient to enable formation of stable, essentially precipitate free concentrated aqueous solution, by dissolving the dry solid composition in water.
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 January 31, 1992 and granted August 6, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2014.
- 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.