Patent · US Expired

Zinc-ammonium phosphate fertilizers

US6322607A · kind A · utility

14Cited by
4References
27Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 19, 1999
Grant dateNov 27, 2001
Priority date
Expiry dateJul 19, 2019

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC05B7/00
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

A process of obtaining a co-granulate of zinc and ammonium phosphate having a N/P ratio of 0.6-1.9 which includes initially feeding ammonium phosphate in finely divided form with a zinc source such as zinc oxide or zinc sulphate into a granulator wherein ammonia may also be fed into the granulator to increase the N/P ratio. The co-granulate is then obtained after drying.

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