US Patents: 

1. Jie Yuan, "Calibration method and architecture for both linear and nonlinear error in pipelined analog-to-digital converters", US provisional patent application, 2011
2. Jie Yuan, Bing Liu, "Quantum-limited highly linear CMOS detector for computer tomography", US patent application, 13/115,681, filed May 25, 2011
3. Jie Yuan, Ho Yeung Chan, "Apparatus and method for improving dynamic range and linearity of CMOS image sensor", US patent application 12/697,061, pending, filed Jan. 29, 2010