Issued Patents 2025
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12318971 | Mold for partially shortening circumference of tube billet and using method of mold | Lei Sun, Anying Yuan | 2025-06-03 |
| 12257617 | Preforming method for high-strength steel variable-diameter tubular part | Lei Sun, Wencai Xie, Cunsheng Zhang, Anying Yuan, Gang Fang +1 more | 2025-03-25 |