Preparation method of supercritical carbon dioxide thickener for tight oil and gas reservoir
US-11261373-B2 · Mar 1, 2022 · US
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Yi Rongjun patents
Yi Rongjun is listed as an inventor on 2 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Yi Rongjun |
| Total patents | 2 |
| First publication | Dec 10, 2020 |
| Latest publication | Mar 1, 2022 |
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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 |
|---|---|
| C09K8/62 | 2 |
| C09K8/70 | 2 |
| C07C269/06 | 2 |
| C07C303/28 | 2 |
| C07C273/1836 | 2 |