Controlled release nitrogeneous fertilizer composition system
US8211200B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Oct 16, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05B7/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A controlled release nitrogeneous fertilizer composition system, comprising (a) a tannin selected from the group consisting of purified tannins, purified modified tannins, condensate tannins, and mixtures thereof; (b) a nitrogeneous fertilizer component selected from the group consisting of an ammonia fertilizer, an ammonium fertilizer, a urea fertilizer, a nitrogen containing fertilizer, a natural nitrogen containing organic fertilizer, a nitrogen containing waste product fertilizer, a slow and control release fertilizer, and mixtures thereof; and optionally (c) a carrier. Also disclosed is a method for making such fertilizer composition systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.