Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11505908 | Drilling apparatus and PHC pipe cased pile, and method of drilling with PHC pipe cased pile | Zhiguo ZHOU, Xiaoli Sun, Jun Yang, Hesong HU | 2022-11-22 |
| 11214938 | Construction method for pouring concrete in karst cave | Hang Chen, Hesong HU | 2022-01-04 |