Slow and fast release fertilizer composition and methods for making same

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10513470
SERIAL NO

15847795

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Abstract

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A homogeneous fertilizer granule comprises slow-release (e.g. struvite) and fast release sources of phosphorus (P). The homogeneous fertilizer granule may further contain other essential nutrients and micronutrients required by plants. A number of methods may be used to make such granules. One method includes introducing a struvite slurry or fines and a liquid supply of water soluble P into a granulator. Alternatively, dry raw materials can be mixed with water/steam and/or another binder prior to being fed into a granulator. In another embodiment, pre-mixed dry raw materials are mechanically compacted and crushed to yield homogeneous fertilizer particles.

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Patent Owner(s)

Patent OwnerAddress
OSTARA NUTRIENT RECOVERY TECHNOLOGIES INCVANCOUVER BRITISH COLUMBIA V6E 2R1

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Britton, Ahren Thomas Lithia, US 4 18
Clark, Donald R Lutz, US 5 53
Froehlich, Dan Michael White Bear Lake, US 2 10

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