Xiu; Guohua
Patent Applications and Registrations
Patent applications and USPTO patent grants for Xiu; Guohua.The latest application filed is for "process for recovery and purification of nitrous oxide".
- Xiu; Guohua - Shanghai CN
| Patent | Date |
|---|---|
| Process for recovery and purification of nitrous oxide Grant 10,464,813 - Xiu , et al. No | 2019-11-05 |
| Process for Recovery and Purification of Nitrous Oxide App 20140366576 - Xiu; Guohua ; et al. | 2014-12-18 |
| Removal Of Contaminants From Water Systems App 20120298588 - Cha; Zhixiong ; et al. | 2012-11-29 |
| Process for purifying PPPBP Grant 7,884,220 - Xu , et al. February 8, 2 | 2011-02-08 |
| Method of purification of dihydric phenols Grant 7,528,210 - Xiu , et al. May 5, 2 | 2009-05-05 |
| Process For Purifying Pppbp App 20080234496 - Xu; Zhongqi ; et al. | 2008-09-25 |
| Method Of Purification Of Dihydric Phenols App 20070232774 - Xiu; Guohua ; et al. | 2007-10-04 |
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