Inventor · disambiguated record
Lianpan Duan
Also filed as: DUAN LIANPAN
2 granted patents·85 citations·filing 2020–2023
58Inventor score
Files withYANTAI JEREH OILFIELD SERVICES GROUP CO LTD1YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD1
Top patents by PatentIndex Score
2 records- 0194US11480040B2Electro-hydraulic hybrid drive sand-mixing equipmentYANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD·Filed 2020·Granted Oct 25, 2022·85 cites·5 claims
- 0257US12215582B1Fracturing pump spacer frameYANTAI JEREH OILFIELD SERVICES GROUP CO LTD·Filed 2023·Granted Feb 4, 2025·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →