Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6004454 | Hydrocracking of heavy oil and residuum with a dispersing-type catalyst | Li Yuansheng, Wang Jun, Jiang Lijing, Zhang Zhongqing, Liu Jiduan +2 more | 1999-12-21 |
| 5948721 | Dispersing-type catalyst for hydrocracking of heavy oil and residuum, and a method for the preparation thereof | Li Yuansheng, Wang Jun, Jiang Lijing, Zhang Zhongqing, Liu Jiduan +2 more | 1999-09-07 |