Patent · US Active

Modified fertilizer and a method of manufacturing thereof

US9688586B1 · kind B1 · utility

5Cited by

3References

8Claims

0Family size

Inventors

Aicardo Roa-Espinosa · Madison, US
Hailin Lin · 流花街道, CN
Jie Yan · Nanhu, CN

Key dates

Filing date	Sep 11, 2016
Grant date	Jun 27, 2017
Priority date	—
Expiry date	Sep 11, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC05G5/30
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A modified fertilizer structure and a process for making the structure are disclosed. The structure contains at least a first modified oil layer that coats the fertilizer particle. Additional layers may be added as necessary to include a modified fiber layer that coats the modified oil layer, a second and third modified oil layers, a second modified fiber layer, a layer of diatomaceous earth mineral particles and a superabsorbent layer. The structure may be constructed by placing fertilizer particles in a rotating drum, then adding the materials for each layer consecutively into the drum at appropriate conditions. The modified fertilizer structure is configured to gradually release the nutrients into the soil over a desired period of time.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.