| HYDRACHARGE 1581824 · TMA901666 | an individual | 3 Cosmetics | Registered | 2015 |
| HYDROCURE 2180608 · TMA1280696 | Owner not shown | 2 Paints | Registered | 2025 |
| HYDROSURGE 1798775 · TMA999044 | Sunbeam Products, Inc. | 11 Lighting | Registered | 2018 |
| HYDROSURGE 1772657 · TMA980127 · design | Sunbeam Products, Inc. | 3 Cosmetics11 Lighting | Registered | 2017 |
| HYDROCARB 1670513 · TMA927388 | an individual | 1 Chemicals | Registered | 2016 |
| Hydrosurge 1422446 · TMA785364 | SUNBEAM PRODUCTS, INC. A DELAWARE CORPORATION | 11 Lighting27 Carpets28 Toys | Registered | 2010 |
| HYDROSURGE 1375245 · TMA786285 | SUNBEAM PRODUCTS, INC. A DELAWARE CORPORATION | 3 Cosmetics7 Machines11 Lighting+1 | Registered | 2011 |
| HYDROCURE 1158412 · TMA601149 | NORTHEAST SOLITE CORPORATION (a Virginia Corporation) | 19 Building | Registered | 2004 |
| HYDROCLAVE 1149789 · TMA609317 | HYDROCLAVE SYSTEMS CORP. | 7 Machines | Registered | 2004 |
| HYDROCAR 1008026 · TMA532674 · design | an individual | 9 Electronics | Registered | 2000 |
| HYDROCURE 0625565 · TMA367219 | BIOTHERM | 3 Cosmetics | Registered | 1990 |
| HYDROCURVE 0427479 · TMA239766 | Alcon Inc. | 9 Electronics | Registered | 1980 |
| HydroCore 2223028 | HORSTMAN DEFENCE SYSTEMS LIMITED | 12 Vehicles37 Construction42 Science | Pending | 2022 |
| HYDROCHAIN 2217363 | ShawCor Ltd. | 11 Lighting42 Science | Pending | 2022 |
| HYDROCORE 2169093 | Medline Industries, LP | 5 Pharmaceuticals | Pending | 2022 |
| HYDROHYGEN 2164216 · TMA1261138 | Owner not shown | 1 Chemicals9 Electronics37 Construction | Registered | 2024 |
| HYDROSAFE 2081159 · TMA1284133 | Eckart America Corporation | 2 Paints | Registered | 2025 |
| HYDROCEALER 2016047 · TMA1146640 | Tarte, Inc. | 3 Cosmetics | Registered | 2022 |
| HYDROSAFE 1993490 · TMA1137253 | Biologische Insel Lothar Moll GmbH & Co. KG | 37 Construction | Registered | 2022 |
| HYDROCUBE 1976291 · TMA1121510 | an individual | 7 Machines9 Electronics11 Lighting | Registered | 2022 |
| Hydrocyde 1898694 · TMA1092387 | Owner not shown | 1 Chemicals5 Pharmaceuticals9 Electronics+2 | Registered | 2021 |
| HYDROCURC 1850668 · TMA1071399 | Pharmako Biotechnologies Pty Ltd. | 1 Chemicals | Registered | 2020 |
| HYDROCORK 1711128 · TMA944674 | an individual | 17 Rubber19 Building27 Carpets+1 | Registered | 2016 |
| HYDRACHOICE 1664615 · TMA957195 | Delta Faucet Company | 11 Lighting | Registered | 2016 |
| HYDROCHROMA 1645972 · TMA935446 · design | SWIMC LLC | 2 Paints | Registered | 2016 |