Inventor · disambiguated record
Qingfa Liao
Also filed as: Liao Qingfa
3 granted patents·2 citations·filing 2024–2024
49Inventor score
Top patents by PatentIndex Score
3 records- 0183US12044531B1Level instrument and method for surveying mining subsidence zone in coal mining areaPING AN COAL MINING ENGINEERING TECH RESEARCH INSTITUTE CO LTD·Filed 2024·Granted Jul 23, 2024·2 cites·16 claims
- 0253US12188198B2Method for constructing fixed monitoring pile for mining area with high phreatic water levelPING AN COAL MINING ENGINEERING TECH RESEARCH INSTITUTE CO LTD·Filed 2024·Granted Jan 7, 2025·0 cites·9 claims
- 0352US12146410B1Method for dewatering coal mine goaf by crossing neighboring goafPING AN COAL MINING ENGINEERING TECH RESEARCH INSTITUTE CO LTD·Filed 2024·Granted Nov 19, 2024·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →