Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11898337 | Effort-saving flap-type drain valve | Shunxing Zhou, Rongyu Zhang, Xingdong Wang | 2024-02-13 |
| 9945110 | Double-flush light-touch drain valve and double-flush control method | Haibin Chen, Rongyu Zhang, Zhijun Zhong | 2018-04-17 |
| 9790675 | Double flow control mechanism of a soft touch drain valve and a double flow control method thereof | Haibin Chen, Rongyu Zhang, Zhijun Zhong | 2017-10-17 |