Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203144 | Hollow body forming mold and hollow body forming method | Songjun Xu, Dejun Gao, Jie Li, Xueji Ge, Chao Zhang +1 more | 2021-12-21 |
| 10994465 | Rigid connecting device for connecting the upper and lower surfaces inside an oil tank and production method of the oil tank | Yan Sun, Liang Liu, Wenbin Hong, Hao Lv, Weidong Su +4 more | 2021-05-04 |
| 10919378 | Supporting assembly for hollow tank body and forming method for hollow tank body | Liang Liu, Weidong Su | 2021-02-16 |