Toe flap valve for internal corrosion prevention in ccus injection well tubing
US-2025327371-A1 · Oct 23, 2025 · US
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Yuan mark patents
Yuan mark is listed as an inventor on 1 patent in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Yuan mark |
| Total patents | 1 |
| First publication | Oct 23, 2025 |
| Latest publication | Oct 23, 2025 |
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Cnpc Usa Corp | 1 |
| Beijing Huamei Inc | 1 |
| China Nat Petroleum Corp | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| E21B2200/05 | 1 |
| E21B41/02 | 1 |
| E21B41/0064 | 1 |
| E21B34/10 | 1 |