1. Raun, W.R., G.V. Johnson, J.B. Solie, and M.L. Stone. 2003. Process for in-season fertilizer nitrogen application based on predicted yield potential. US Patent No. 6,601,341 B2. Issued, August 5, 2003.
2. Stone, M.L., D. Needham, J.B. Solie, W.R. Raun, and G.V. Johnson. 2003. Optical spectral reflectance sensor and controller. US Patent No. 6,596,996 B1, Issued July 22, 2003.
3. Raun, W.R., G.V. Johnson, J.B. Solie, and M.L. Stone. 2004. A process for in-season fertilizer nitrogen application based on predicted yield potential. U.S. Patent. 10,195,138. (CIP of U.S. Patent 6,601,341).
4. Raun, W.R., G.V. Johnson, J.B. Solie, M.L. Stone, K.W. Freeman. 2005. Use of within-field-element-size CV for improved nutrient fertilization in crop production. US Patent No. 10,801,563 (Allowed).
5. Raun, W.R., G.V. Johnson, J.B. Solie, and M.L. Stone. April 19, 2005. A process for in-season fertilizer nitrogen application based on predicted yield potential. U.S. Patent. 6,880,291.
6. Stone,
M.L., D. Needham, J.B. Solie. W.R. Raun, and G.V. Johnson. 2005. Optical
Spectral Reflectance Sensor and Controller. U.S. Patent. 6,855,933,
Cont. of 6,596,996.
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