- 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.
- 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.
- 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.
- 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.