US 11,999,665 B2
Composite fertiliser systems
Robert John Meakin, Yorkshire (GB); and Timothy David Lewis, Yorkshire (GB)
Assigned to YORK POTASH LTD, London (GB)
Filed by YORK POTASH LTD, London (GB)
Filed on Jan. 7, 2021, as Appl. No. 17/144,026.
Application 17/144,026 is a continuation of application No. 15/775,336, granted, now 10,899,674, issued on Jan. 26, 2021, previously published as PCT/GB2016/053531, filed on Nov. 10, 2016.
Claims priority of application No. 1520082 (GB), filed on Nov. 13, 2015.
Prior Publication US 2021/0130247 A1, May 6, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C05D 1/00 (2006.01); C05C 9/00 (2006.01); C05G 5/12 (2020.01); C05G 5/30 (2020.01)
CPC C05C 9/005 (2013.01) [C05D 1/00 (2013.01); C05G 5/12 (2020.02); C05G 5/30 (2020.02)] 24 Claims
OG exemplary drawing
 
1. A fertiliser pellet comprising:
a first region of a nitrogen-providing fertiliser composition; and
a second region adhered to the exterior of the first region, wherein the second region substantially surrounds the first region, the second region comprising polyhalite.