Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11434558 | NPR non-magnetic steel material for rock bolt and production method thereof | Manchao He, Hongyan Guo, Jiuping Wang | 2022-09-06 |
| 11427899 | NPR steel material for rock bolt and production method thereof | Manchao He, Hongyan Guo, Jiuping Wang | 2022-08-30 |