Beijing
China
5
2025-05-27
The entities that hold a legal rights for patent applications filed by inventor Wei Xinjiang:
Xinjiang Wei from Beijing, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Method of segmented grouting for repairing aquifers in mining area
#2 | 2025-01-14Grouting and water blocking method for directional hole with large offset in hard rock stratum
#3 | 2024-11-12Directional drilling method for branching borehole with short radius and system
#4 | 2024-10-29Method for repairing aquifer in coal mine area
#5 | 2024-08-06Directional drilling device and drilling method of aquifer remediation of coal seam roof
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