Well cementation working solution prepared from red mud, slag and waste drilling fluids
US-10975284-B2 · Apr 13, 2021 · US
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Long Dan patents
Long Dan is listed as an inventor on 2 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Long Dan |
| Total patents | 2 |
| First publication | Mar 5, 2020 |
| Latest publication | Apr 13, 2021 |
Notable patents
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ Southwest Petroleum | 2 |
| China Academy Of Building Res | 2 |
| Cnpc Eng Tech Res & Dev Co Ltd | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C09K8/467 | 2 |
| C04B28/26 | 2 |
| C04B24/18 | 2 |
| E21B33/138 | 2 |
| C04B28/08 | 2 |