Inventor · disambiguated record
Dujuan Wang
Also filed as: WANG DUJUAN
2 granted patents·3 citations·filing 2014–2014
37Inventor score
Technology areasE21B
Top patents by PatentIndex Score
2 records- 0159US10202807B2Vertical shaft drilling rig using novel drilling methodChina railway engineering equipment group co ltd·Filed 2014·Granted Feb 12, 2019·3 cites·2 claims
- 0236US9995086B2Center-pillared full-face shaft drilling machineChina railway engineering equipment group co ltd·Filed 2014·Granted Jun 12, 2018·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →