Owner The Board of Regents for Oklahoma State University

Inventors Johnson, Gordon, V.; Solie, John, B.; Stone Marvin, L.; Needham, DUANE; Raun, William, R.

Agent Mallesons

Pub. Number AU-B-2002318277

PCT Number PCT/US02/23009

PCT Pub. Number WO2003/010521

Priority 09/912,077 24.07.01 US

Filing date 19 July 2002

Wipo publication date 17 February 2003

Acceptance publication date 3 May 2007

G01N 21/35 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light

A01C 21/00 (2006.01) Methods of fertilising

G01J 3/427 (2006.01) Spectrometry

G01N 21/47 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Scattering, i.e. diffuse reflection

G01J 3/433 (2006.01) Spectrometry

G01N 21/31 (2006.01) Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry