Liu; Xuefen
Patent Applications and Registrations
Patent applications and USPTO patent grants for Liu; Xuefen.The latest application filed is for "hydrogenation catalyst, its production and application thereof".
- Liu; Xuefen - Beijing CN
| Patent | Date |
|---|---|
| Hydrogenation catalyst, its production and application thereof Grant 11,161,105 - Zhang , et al. November 2, 2 | 2021-11-02 |
| Hydrogenation catalyst, its production and application thereof App 20190232269 - ZHANG; Le ; et al. | 2019-08-01 |
| Process for hydrotreating heavy raw oils Grant 9,657,236 - Yang , et al. May 23, 2 | 2017-05-23 |
| Hydrogenation catalyst and use thereof Grant 8,697,598 - Long , et al. April 15, 2 | 2014-04-15 |
| Process For Hydrotreating Heavy Raw Oils App 20140001090 - YANG; Qinghe ; et al. | 2014-01-02 |
| Hydrogenation catalyst and use thereof App 20090139898 - Long; Xiangyun ; et al. | 2009-06-04 |
| Catalyst for hydrorefining fraction oils, its carrier and preparation Grant 6,518,219 - Yang , et al. February 11, 2 | 2003-02-11 |
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