He; Yufa

Patent Applications and Registrations

Patent applications and USPTO patent grants for He; Yufa.The latest application filed is for "cavity creation tool by crushing with multi-stage controllable water jet for natural gas hydrate development".

Company Profile

3.5.8

He; Yufa - Chengdu CN
HE; Yufa - Zhanjiang CN
HE; Yufa - Chengdu City Sichuan Province
He; Yufa - Sichuan CN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
In situ exploitation-separation-backfilling integration apparatus used for natural gas hydrates Grant 11,434,727 - Tang , et al. September 6, 2	2022-09-06
Cavity Creation Tool By Crushing With Multi-stage Controllable Water Jet For Natural Gas Hydrate Development App 20220268132 - TANG; Yang ; et al.	2022-08-25
In Situ Exploitation-separation-backfilling Integration Apparatus Used For Natural Gas Hydrates App 20220243564 - TANG; Yang ; et al.	2022-08-04
Oil Extraction And Gas Production Method Capable Of In-situ Sand Control And Removal By Downhole Hydraulic Lift App 20220205347 - TANG; Yang ; et al.	2022-06-30
Test device for simulating longitudinal-lateral-torsional coupled nonlinear vibration of drill string of deepwater riserless drilling and method therefor Grant 11,255,745 - Liu , et al. February 22, 2	2022-02-22
Combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation Grant 11,199,050 - Wang , et al. December 14, 2	2021-12-14
Automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate Grant 11,193,333 - Tang , et al. December 7, 2	2021-12-07
Test Device For Simulating Longitudinal-lateral-torsional Coupled Nonlinear Vibration Of Drill String Of Deepwater Riserless Drilling And Method Therefor App 20210199535 - LIU; Jun ; et al.	2021-07-01
Combined Crushing Super-variable-diameter Drill Bit For Natural Gas Hydrate Exploitation App 20210140244 - WANG; Guorong ; et al.	2021-05-13
Automatic Jet Breaking Tool For Solid Fluidization Exploitation Of Natural Gas Hydrate App 20210140243 - TANG; Yang ; et al.	2021-05-13
Experimental Device And Experimental Method For Natural Gas Hydrate Solid-state Fluidized Mining And Crushing App 20210079762 - WANG; Guorong ; et al.	2021-03-18
Device and method for solid-state fluidized mining of natural gas hydrates in shallow seabed Grant 10,822,927 - Tang , et al. November 3, 2	2020-11-03
Device And Method For Solid-state Fluidized Mining Of Natural Gas Hydrates In Shallow Seabed App 20200040710 - TANG; Yang ; et al.	2020-02-06

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