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| WO-2022046560-A1 | Fluorescent dye loaded polymeric taggants for depth determination in drilling wells | 2020-08-24 |
| CN-109384934-B | Double-grafted polymer with main chain containing cyclic structure and preparation method thereof | 2018-10-29 |
| US-2020116019-A1 | Surface logging wells using depth-tagging of cuttings | 2018-10-15 |
| WO-2020081426-A1 | Surface logging wells using depth-tagging of cuttings with polymeric taggants | 2018-10-15 |
| US-10808529-B2 | Surface logging wells using depth-tagging of cuttings | 2018-10-15 |
| US-2020408089-A1 | Surface logging wells using depth-tagging of cuttings | 2018-10-15 |
| WO-2020006721-A1 | High-grafting density cyclic comb shaped polymer and preparation method therefor | 2018-07-04 |
| US-2021122883-A1 | High-grafting density cyclic comb shaped polymer and preparation method therefor | 2018-07-04 |
| CN-108976426-B | High-grafting-density ring comb polymer and preparation method thereof | 2018-06-26 |
| EP-3528045-A1 | Method for forming a cross-linked layer | 2018-02-16 |
