Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10414868 | Preparation method of polyimide | Xin Zhang, Jibin Zhong, Xiaoyi Lv | 2019-09-17 |
| 5081281 | Process for the preparation of 3,3',4,4'-biphenyltetracarboxylic acid and its derivatives | Zugiang Wang, Zhenghua YANG, Jing Zhang | 1992-01-14 |