Inventor · disambiguated record

Lihua Han

Also filed as: HAN LIHUA

2 granted patents·0 citations·filing 2019–2020

22Inventor score

Technology areasE21B

Files withXUZHOU XUGONG FOUNDATION CONSTR MACHINERY CO2

Top patents by PatentIndex Score

2 records

0141US12498297B2Test device and method for testing and commissioning comprehensive performance of rotary drilling rigXUZHOU XUGONG FOUNDATION CONSTR MACHINERY CO·Filed 2020·Granted Dec 16, 2025·0 cites·10 claims
0239US11268328B2Double-walled drill pipe and drilling machineXUZHOU XUGONG FOUNDATION CONSTR MACHINERY CO·Filed 2019·Granted Mar 8, 2022·0 cites·19 claims

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