Chinese Patents

1. Zhiyong Xu, Kun Qian, Yaqi Wu, Zhao Zhao and Dongxu Han, “A Method for Multi-feature Extraction of Acoustic Signals during Human Sleeping”, Grant No. ZL201310295535.1, 2015.
2. Zhiyong Xu, Kun Qian, Huijie Xu and Weining Huang, “Upper Airway Change Monitoring Method based on Snore Formants and Power Ratio Tracks”, Grant No. ZL201310131916.6, 2014.
3. Zhiyong Xu, Zhao Zhao, Shuming Shen, Yaqi Wu, Kun Qian, Tianyi Gu and Yuzhuo Fang, “A Prototype for Passive Acoustic Detection Applied for Sensor Networks”, Grant No. ZL201320484626.5, 2014.

German Patents

1. Christoph Jannot, Kun Qian and Florian Eyben, “A System for the Determination of Anatomical Causes for the Development of Snoring Noises”, Application No. DE202016001773U1, 2016.