Inspection system and method with variable-diameter traveling robot for inspection of natural gas pipeline
US-11150199-B2 · Oct 19, 2021 · US
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Ji Nan patents
Ji Nan is listed as an inventor on 2 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Ji Nan |
| Total patents | 2 |
| First publication | Sep 9, 2021 |
| Latest publication | Oct 19, 2021 |
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ Southwest Petroleum | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| H04N23/54 | 2 |
| H04N23/56 | 2 |
| H04N23/555 | 2 |
| H04N23/90 | 2 |
| G01N2021/9542 | 2 |