Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11441201 | Sucker rod steel and manufacturing method therefor | Xiangjiang Liu | 2022-09-13 |
| 11396682 | Free machining and non-quenched and tempered steel and manufacturing method therefor | Dajiang Yu, Xijun JIANG, Rui Huang | 2022-07-26 |
| 9221178 | Live working robot for replacing insulator string | Junliu Zhang, Zhiyong Chen, Nianjun Zhang, Jinping WANG, Xingyu MA | 2015-12-29 |