Automatic separation apparatus for four fractions of heavy oil and separation method thereof
US-12544690-B2 · Feb 10, 2026 · US
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Wen Dawei patents
Wen Dawei is listed as an inventor on 2 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Wen Dawei |
| Total patents | 2 |
| First publication | Jan 5, 2023 |
| Latest publication | Feb 10, 2026 |
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Petrochina Co Ltd | 2 |
| Beijing Orienda Instr Co Ltd | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G01N2030/027 | 2 |
| G01N30/38 | 2 |
| G01N30/06 | 2 |
| C10G25/003 | 2 |
| B01J2220/52 | 2 |