Zhang; Zupei
Patent Applications and Registrations
Patent applications and USPTO patent grants for Zhang; Zupei.The latest application filed is for "sampling method and sampler for gas hydrates by hole bottom freezing".
- Zhang; Zupei - Changchun CN
- Zhang; Zupei - Changchun City CN
| Patent | Date |
|---|---|
| Sampling method and sampler for gas hydrates by hole bottom freezing Grant 8,074,739 - Sun , et al. December 13, 2 | 2011-12-13 |
| Sampling Method And Sampler For Gas Hydrates By Hole Bottom Freezing App 20090229382 - Sun; Youhong ; et al. | 2009-09-17 |
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