Inventor
Chuanjie Zhu
Inventor
Jiangsu, CN
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling46%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels46%
E21CMining or quarrying8%
PatentTitleYear
10,858,913Permeability enhancement method for coalbed methane wells by using electric pulse detonation fracturing technology202010,378,327Method for gas extraction alternating oscillating pulse high energy gas extraction with thermal injection201910,370,942Method for integrated drilling, flushing, slotting and thermal injection for coalbed gas extraction201910,060,238Method for integrated drilling, slotting and oscillating thermal injection for coal seam gas extraction20189,951,597Downhole coal seam pulse detonation wave directional fracturing permeability-increasing method20189,869,168'Method for thermal-displacement-type strengthened extraction in drill hole'2018Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2018–2020Patents assigned to UNIV CHINA MINING (6)· patent assignee history
2018–2020Based in Jiangsu, CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV CHINA MINING | 6 | 2018–2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Jiangsu, CN | 6 | 2018–2020 |