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Patent applications and USPTO patent grants for He; Yixuan.The latest application filed is for "refining process and refining system of caprolactam".
Patent | Date |
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Refining Process And Refining System Of Caprolactam App 20220089545 - Cheng; Shibiao ;   et al. | 2022-03-24 |
Mfi Topological Structure Silicon Molecular Sieve, Preparation Method Thereof And Catalyst Containing The Same App 20220001364 - CHENG; Shibiao ;   et al. | 2022-01-06 |
Inspection system and method with variable-diameter traveling robot for inspection of natural gas pipeline Grant 11,150,199 - Chen , et al. October 19, 2 | 2021-10-19 |
Inspection System And Method With Variable-diameter Traveling Robot For Inspection Of Natural Gas Pipeline App 20210278349 - CHEN; Zhen ;   et al. | 2021-09-09 |
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