Double-layer coiled tubing double-gradient drilling system
US-11773653-B2 · Oct 3, 2023 · US
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Liu Hexing patents
Liu Hexing is listed as an inventor on 21 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Liu Hexing |
| Total patents | 21 |
| First publication | Sep 14, 2017 |
| Latest publication | Oct 3, 2023 |
Notable patents
Publications ranked by popularity score, then publication date.
Solid fluidization tubular separator for marine natural gas hydrate
US-11746640-B2 · Sep 5, 2023 · US
Double-layer coiled tubing double-gradient drilling system
US-2023085283-A1 · Mar 16, 2023 · US
Solid fluidization tubular separator for marine natural gas hydrate
US-2022349292-A1 · Nov 3, 2022 · US
Combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation
US-11199050-B2 · Dec 14, 2021 · US
Automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate
US-11193333-B2 · Dec 7, 2021 · US
Automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate
US-2021140243-A1 · May 13, 2021 · US
Combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation
US-2021140244-A1 · May 13, 2021 · US
Water-based drilling fluids for deepwater drilling and use thereof
US-10836947-B2 · Nov 17, 2020 · US
Method, apparatus and system for controlling smart device based on headphone
US-10649522-B2 · May 12, 2020 · US
Recent patents
Latest publications not already listed above.
Riser stub for acoustic resonance decomposition of hydrate in deepwater drilling
US-10641049-B2 · May 5, 2020 · US
Riser Stub for Acoustic Resonance Decomposition of Hydrate in Deepwater Drilling
US-2020080386-A1 · Mar 12, 2020 · US
Method for switching working mode of headphone and headphone
US-10484524-B2 · Nov 19, 2019 · US
Headphone with biological feature detection function, interaction system and biological feature detection method
US-10470673-B2 · Nov 12, 2019 · US
Water-based drilling fluids for deepwater drilling and use thereof
US-2019300772-A1 · Oct 3, 2019 · US
Method for switching working mode of headphone and headphone
US-2018316785-A1 · Nov 1, 2018 · US
Method for switching working mode of headphone and headphone
US-10051099-B2 · Aug 14, 2018 · US
Bluetooth low energy device, and data update system and method
US-2018150291-A1 · May 31, 2018 · US
Headphone with biological feature detection function, interaction system and biological feature detection method
US-2017296077-A1 · Oct 19, 2017 · US
Method, apparatus and system for controlling smart device based on headphone
US-2017300112-A1 · Oct 19, 2017 · US
Method for switching working mode of headphone and headphone
US-2017264728-A1 · Sep 14, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Shenzhen Goodix Tech Co Ltd | 8 |
| Univ Southwest Petroleum | 8 |
| Southern Marine Science And Eng Guangdong Laboratory Zhanjiang | 6 |
| Univ China Petroleum Beijing | 2 |
| Univ Yangtze | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H04R1/1041 | 8 |
| H04R1/10 | 8 |
| H04M19/04 | 6 |
| H04R2420/07 | 6 |
| E21B41/0099 | 6 |