Du; Di
Patent Applications and Registrations
Patent applications and USPTO patent grants for Du; Di.The latest application filed is for "drilling fluid contamination determination for downhole fluid sampling tool".
- Du; Di - Houston TX
- Du; Di - Liaoning N/A CN
Trademarks
| Patent | Date |
|---|---|
| Drilling fluid contamination determination for downhole fluid sampling tool Grant 11,156,083 - He , et al. October 26, 2 | 2021-10-26 |
| Underwater traffic tunnel Grant 11,136,740 - Du October 5, 2 | 2021-10-05 |
| Sea tunnel Grant 10,889,956 - Du January 12, 2 | 2021-01-12 |
| Drilling Fluid Contamination Determination For Downhole Fluid Sampling Tool App 20200240264 - He; Tian ; et al. | 2020-07-30 |
| Drilling fluid contamination determination for downhole fluid sampling tool Grant 10,633,970 - He , et al. | 2020-04-28 |
| Sea Tunnel App 20200095746 - Du; Di | 2020-03-26 |
| Fluid characterization and phase envelope prediction from downhole fluid sampling tool Grant 10,550,692 - He , et al. Fe | 2020-02-04 |
| Drilling Fluid Contamination Determination for Downhole fluid Sampling Tool App 20190100995 - He; Tian ; et al. | 2019-04-04 |
| Fluid Characterization and Phase Envelope Prediction from Downhole Fluid Sampling Tool App 20190017377 - He; Tian ; et al. | 2019-01-17 |
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