Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9754746 | Dual voltage level circuit for driving a latching relay | John F. Broker, Xiaobing Zhu | 2017-09-05 |
| 9739499 | Dual-mode power stealing for a climate control system controller | Lihui Tu, Zhongliang Xu, Long Huang | 2017-08-22 |
| 9404667 | Determining power stealing capability of a climate control system controller | Lihui Tu | 2016-08-02 |
| 9261540 | Devices for measuring voltage of a power supply, detection devices, and temperature controllers | Lihui Tu, Liang Cao | 2016-02-16 |
| 9223324 | DC voltage-limiting circuits and electronic devices and thermostats including DC voltage-limiting circuits | Zhongliang Xu, Liang Cao, Bradley C. Zikes | 2015-12-29 |