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Patent applications and USPTO patent grants for Sun; Wantong.The latest application filed is for "natural gas hydrate solid-state fluidization mining method and system under underbalanced positive circulation condition".
Patent | Date |
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Natural gas hydrate solid-state fluidization mining method and system under underbalanced positive circulation condition Grant 11,156,064 - Zhao , et al. October 26, 2 | 2021-10-26 |
Hydrate solid-state fluidization mining method and system under underbalanced reverse circulation condition Grant 11,053,779 - Zhao , et al. July 6, 2 | 2021-07-06 |
Natural Gas Hydrate Solid-state Fluidization Mining Method And System Under Underbalanced Positive Circulation Condition App 20200300066 - ZHAO; Jinzhou ;   et al. | 2020-09-24 |
Crushing System For Large-size Natural Gas Hydrate Rock Samples App 20200290052 - ZHAO; Jinzhou ;   et al. | 2020-09-17 |
Hydrate Solid-state Fluidization Mining Method And System Under Underbalanced Reverse Circulation Condition App 20200291754 - ZHAO; Jinzhou ;   et al. | 2020-09-17 |
Method For Intelligently Determining Hydrate Drilling And Production Risks Based On Fuzzy Judgment App 20200240243 - LI; Haitao ;   et al. | 2020-07-30 |
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