Issued Patents 2020
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10865909 | Vacuum-keeping multistage vacuum-generating and vacuum-destructing valve | Wei-Huan Yu | 2020-12-15 |
| 10808496 | Cementing plug | Hongying Zhang, Na Wang, Yanfu Huang, Lin Shi | 2020-10-20 |
| 10794497 | Vacuum-based energy-saving large-capacity precision pressure regulation valve | Chih-Sheng Cheng | 2020-10-06 |
| 10732650 | Vacuum large-capacity electrically controlled proportional valve | Chih-Sheng Cheng, Yu-Li Chen | 2020-08-04 |
| 10704701 | Vacuum electrically controlled proportional valve | Chih-Sheng Cheng, Yu-Li Chen | 2020-07-07 |
| 10670163 | Electrically-controlled large-capacity proportional valve | Chih-Sheng Cheng | 2020-06-02 |
| 10578065 | Two-stage intake and two-stage discharge structure of electrically controlled proportional valve | Chih-Sheng Cheng | 2020-03-03 |