Magnetic flux leakage and electromagnetic acoustic transducer joint testing device and method for drill pipe at wellhead
US-12339250-B2 · Jun 24, 2025 · US
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Deng Chengjun patents
Deng Chengjun is listed as an inventor on 2 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Deng Chengjun |
| Total patents | 2 |
| First publication | May 22, 2025 |
| Latest publication | Jun 24, 2025 |
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ Sichuan | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G01N2291/2634 | 2 |
| G01N2291/02854 | 2 |
| G01N29/44 | 2 |
| G01N29/27 | 2 |
| G01N29/223 | 2 |