M. Kirby and R.J. Hansman, “Method and Apparatus for Measurement of Ice Thickness Employing Ultrasonic Pulse-Echo Technique,” U.S. Patent No. 4,628,736, issued December 16, 1986.
R.J. Hansman, “Method and Apparatus for Monitoring Liquid Volume/Mass in Tanks,” U.S. Patent No. 4,729,245, issued March 8, 1987.
R.J. Hansman and A. Dershowitz, “Optically Indicating Aircraft De-Icing Fluids,” U.S. Patent No. 5,039,439, issued August 13, 1991.
R.J. Hansman and A. Dershowitz, “Passive Infrared Ice Detector,” U.S. Patent No. 5,313,202, issued May 17, 1994.
R.J. Hansman, J. Deyst, and R. Kornfeld, “Integrated Flight Information and Control System,” U.S. Patent No. 6,389,333, issued May 14, 2002.
