| Trademark | Trademark Holder |
|---|
| X Plate | BD (Becton, Dickinson and Company) |
| X-am | Draeger Safety |
| Xamine | Thermo Fisher Scientific |
| XAR | Eastman Kodak Co. |
| Xbox | Microsoft Corporation |
| XC | Sperian |
| Xcalibur | Thermo Fisher Scientific |
| XCaper | Whiffs |
| XCEL | Biotrace Ltd. |
| Xcel | Scott Technologies |
| XCell | Thermo Fisher Scientific |
| X-Cell | SPEX SamplePrep |
| XCell II | Thermo Fisher Scientific |
| XCell II | Novel Experimental Technology |
| XCell SureLock | Thermo Fisher Scientific |
| XCell4 | Thermo Fisher Scientific |
| XCell4 SureLock | Thermo Fisher Scientific |
| XCell6 | Thermo Fisher Scientific |
| xD-Picture Card | Fuji Photo Film |
| Xenon | Cermax |
| Xenoy | GE Plastics |
| Xerolyt | Mettler Toledo |
| X-Factor | Ergodyne Corporation |
| X-Fluxer | SPEX SamplePrep |
| Xi-Clone | Genlantis |
| X-Jumbo | Carolina Biological Supply Company |
| XL | Labconco |
| XL10-Gold | Stratagene |
| xMAP | Luminex Corporation |
| xMAP Flock Monitor | Luminex Corporation |
| xMAP Salmonella | Luminex Corporation |
| XM-Series | Carson Optical |
| X-Omat | Eastman Kodak Co. |
| Xpand | Dade Behring Inc. |
| Xpect | Thermo Fisher Scientific |
| XPERT | Thermo Fisher Scientific |
| XPert | Labconco |
| Xplore3D | Thermo Fisher Scientific |
| xPONENT | Luminex Corporation |
| Xpress | Thermo Fisher Scientific |
| X-Press | SPEX SamplePrep |
| X-Resin | Biotix Inc |
| XRT | TOWA Corporation |
| XSERIES 2 | Thermo Fisher Scientific |
| X-Sight | Carestream Health Inc. |
| X-Static | Laird Technologies-Sauquoit, Inc. |
| Xstream | Labconco |
| XT HP | Streamlight, Inc. |
| xTAG | Luminex Corporation |
| xTAG CYP2C19 Kit v3 | Luminex Corporation |
| xTAG CYP2D6 Kit v3 | Luminex Corporation |
| xTAG Cystic Fibrosis Kit | Luminex Corporation |
| xTAG Gastrointestinal | Luminex Corporation |
| xTAG Microspheres | Luminex Corporation |
| xTAG Respiratory | Luminex Corporation |
| XTERMINATOR | Thermo Fisher Scientific |
| XTerra | Waters Corporation |
| X-Tex | Xextex Corporation |
| XTI | Restek Corporation |
| xTip | Biotix Inc |
| XTL | Motorola |
| XTP | Norcross Safety Products |
| X-tra | Rubbermaid |
| xtraclean | Miller Products |
| Xtralite | Difco Performance Fabrics, Inc. |
| Xtra-PFE | Kimberly-Clark Corporation |
| XtraTuff | TOWA Corporation |
| XtremeView | ViewSonic |
| Xtrication | Shelby Group International |
| X-Tricator | Eye Safety Systems |
| XTS | Motorola |
| XVault | Thermo Fisher Scientific |
| X-VIVO 10 | BioWhittaker Molecular Applications |
| X-VIVO 15 | BioWhittaker Molecular Applications |
| X-VIVO 20 | BioWhittaker Molecular Applications |
| Xylocaine | AstraZenica LP |
