Self-drilling differential grouting combined bolt and anchoring method therefor
US-10794183-B2 · Oct 6, 2020 · US
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Xu Guoan patents
Xu Guoan is listed as an inventor on 2 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Xu Guoan |
| Total patents | 2 |
| First publication | Feb 20, 2020 |
| Latest publication | Oct 6, 2020 |
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ China Mining | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21D20/003 | 2 |
| E21D21/0026 | 2 |
| E21D20/021 | 2 |
| E21D20/028 | 2 |
| E02D5/74 | 2 |