Assignee
HANCHENG ZAOZHUANG IND CO LTD
CN·1 granted patent·1 pending application·0 citations·filing 2022–2023
Top patents by PatentIndex Score
2 records- 0138US2023167718A1Method for determining secondary reservoir formation boundaries and combined extraction of multiple asymmetric mining coalbed methaneHANCHENG ZAOZHUANG IND CO LTD·Filed 2022·Application pending·0 cites
- 0236US11970945B2Hole protection system and method for coal seam slotting and fracturing combined drainageHANCHENG ZAOZHUANG IND CO LTD·Filed 2023·Granted Apr 30, 2024·0 cites·5 claims
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