Full-length screen pipe hole protection device and method with pressurized hole packing in soft coal seam
US-11396810-B2 · Jul 26, 2022 · US
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Xie Jingna patents
Xie Jingna is listed as an inventor on 2 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Xie Jingna |
| Total patents | 2 |
| First publication | Jun 30, 2022 |
| Latest publication | Jul 26, 2022 |
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Recent patents
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ Shandong Science & Tech | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C04B2111/00663 | 2 |
| C04B2111/00137 | 2 |
| C04B2111/00724 | 2 |
| E21B43/082 | 2 |
| E21F7/00 | 2 |