The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1999
Filed:
Jan. 27, 1997
Patricio L Araya, Antofagasta, CL;
Armin R Lauterbach, Antofagasta, CL;
Jubitza K Reyes, Antofagasta, CL;
A Michael Huey, Florence, AL (US);
James T Stafford, Florence, AL (US);
Darren L Jeffreys, Sheffield, AL (US);
A Ray Shirley, Jr, Florence, AL (US);
SQM Nitratos, S.A., Santiago, CL;
Abstract
Granular coated particles suitable for use alone or in combination with other fertilizer particles as an nitrogen-dispersing agricultural fertilizer, and a process for making the granular coated particles are disclosed. The granular coated particles include particles formed from at least one metal nitrate, and a first coating layer surrounding each of the metal nitrate particles. The first coating layer is formed from a mixture containing urea and at least one metal nitrate. The metal nitrate particles each is substantially free and discrete from other metal nitrate particles. The metal nitrate is preferably sodium nitrate or potassium nitrate.