Ji; Youjun
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ji; Youjun.The latest application filed is for "irregular rock sample high-pressure permeation device with adjustable flow direction and test method thereof".
- Ji; Youjun - Sichuan CN
- Ji; Youjun - Chengdu CN
| Patent | Date |
|---|---|
| Drilling platform for amphibious operations Grant 11,441,357 - Zhang , et al. September 13, 2 | 2022-09-13 |
| Irregular rock sample high-pressure permeation device with adjustable flow direction and test method thereof Grant 11,047,789 - Guo , et al. June 29, 2 | 2021-06-29 |
| Drilling platform for amphibious operations App 20200018121 - Zhang; Junwei ; et al. | 2020-01-16 |
| Irregular rock sample high-pressure permeation device with adjustable flow direction and test method thereof App 20200018681 - Guo; Liang ; et al. | 2020-01-16 |
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