R. Hornbaker, V. Kindratenko, and D. Pointer, System for tracking grain, US Patent 7,511,618, March 31, 2009.
R. Hornbaker, V. Kindratenko, and D. Pointer, Tracking device for grain, US Patent 7,162,328, January 9, 2007.
R. Hornbaker, V. Kindratenko, and D. Pointer, Method for tracking grain, US Patent 7,047,103, May 16, 2006.
V. Kindratenko and R. Fenwick, System and method for hidden object removal, US Patent 6,897,863, May 24, 2005.
V. Kindratenko and R. Fenwick, Cuts removal system for triangulated CAD models, US Patent 6,744,434, June 1, 2004.