Issued Patents 2024
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12128474 | Method for preparing negative pressure film-covering frozen sand mold | Haoqin Yang, Zhongde Shan, Qinjiang Liu, Dandan Yan, Shijie Dong | 2024-10-29 |
| 11945026 | Multi-path internal microporous efficient refrigeration method and device for frozen sand mold | Zhongde Shan, Haoqin Yang | 2024-04-02 |