Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11366084 | Ultrasonic flaw detector test block | Changhua Chen, Li Zhang, Hong Mei Zhang, Zhengmao Xu, Zheng Dong +2 more | 2022-06-21 |
| 11045888 | Portable wire cutting device for sampling steel ingot | Lingjun He, Changhua Chen, Hong Mei Zhang, Li Zhang, Leijun Song +6 more | 2021-06-29 |
| 9810667 | Heel test block | Changhua Chen, Li Zhang, Xiaolei Liu, Zhengmao Xu, Zheng Dong +1 more | 2017-11-07 |