Slow release nitrogen fertilizer
US6936681B1 · kind B1 · utility
34Cited by
90References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2003 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Jul 4, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S47/09
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A slow release, particulate urea-formaldehyde polymer useful as a fertilizer for enhancing the extended delivery of nitrogen needed for plant development and growth and a granular fertilizer made with the particulate urea-formaldehyde polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.