Inventor · disambiguated record

Lei Cha

Also filed as: CHA LEI

6 granted patents·9 citations·filing 2022–2023

72Inventor score

Technology areasE21B

Files withUNIV SOUTHWEST PETROLEUM6

Top patents by PatentIndex Score

6 records

0190US11834928B1Drill string rotation controller for directional drillingUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Dec 5, 2023·4 cites·11 claims
0287US11828149B1Fracking tool with electromagnetic intelligent control sliding sleeveUNIV SOUTHWEST PETROLEUM·Filed 2023·Granted Nov 28, 2023·3 cites·13 claims
0380US12326084B1Intelligent directional device for full rotation of drill stringUNIV SOUTHWEST PETROLEUM·Filed 2023·Granted Jun 10, 2025·2 cites·4 claims
0450US12435569B2Directional well hydraulic clutch drill string full rotation controllerUNIV SOUTHWEST PETROLEUM·Filed 2023·Granted Oct 7, 2025·0 cites·20 claims
0548US11927077B2High-frequency composite impactorUNIV SOUTHWEST PETROLEUM·Filed 2022·Granted Mar 12, 2024·0 cites·16 claims
0644US12180808B2All-metal intelligent control motorUNIV SOUTHWEST PETROLEUM·Filed 2023·Granted Dec 31, 2024·0 cites·18 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →