Inventor · disambiguated record
Zhengang Ma
Also filed as: MA ZHENGANG
2 granted patents·0 citations·filing 2023–2023
21Inventor score
Technology areasE21B
Top patents by PatentIndex Score
2 records- 0144US12509943B2Combined drilling system with double rotary driving devices and control method thereforCCTEG CHONGQING RES INSTITUTE CO LTD·Filed 2023·Granted Dec 30, 2025·0 cites·10 claims
- 0236US12448847B2Coal mine intelligent directional drill and drilling method thereforCCTEG CHONGQING RES INSTITUTE·Filed 2023·Granted Oct 21, 2025·0 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →