1. "High Speed Low Power Annular Magnetic Devices Based on Current Induced Spin- Momentum Transfer", A.D. Kent and D.L. Stein, U.S. Patent 7,307,876; issued December 11, 2007.
2. "High Speed Low Power Annular Magnetic Devices Based on Current Induced Spin-Momentum Transfer", A.D. Kent and D.L. Stein, U.S. Patent 7,911,832; issued March 22, 2011.
3. "High Speed Low Power Annular Magnetic Devices Based on Current Induced Spin-Momentum Transfer", A.D. Kent, D.L. Stein, and J.-M. Beaujour, U.S. Patent 8,363,465; issued January 29, 2013.
4. "A Nanoscale Variable Resistor/Electromechanical Transistor", J. Buerki, C.A. Stafford, and D.L. Stein, U.S. Patent 8,492,231; issued July 23, 2013.
5. "A Nanoscale Variable Resistor/Electromechanical Transistor", J. Buerki, C.A. Stafford, and D.L. Stein, U.S. Patent 9,406,789; issued August 2, 2016.