| Company | Location |
|---|---|
| Southern Ionics Inc. | West Point, Mississippi, United States |
| SouthWest NanoTechnologies Inc. | Norman, Oklahoma, United States |
| Space Micro Inc. | Poway, California, United States |
| SpaceVest | Reston, Virginia, United States |
| Specialty Coating Systems | Indianapolis, Indiana, United States |
| Specialty Laboratories Inc. | Santa Monica, California, United States |
| SpecTIR | Reno, Nevada, United States |
| Spectrum Laboratories | Rancho Dominguez, California, United States |
| SpectRx Inc. | Norcross, Georgia, United States |
| SpeedFam-IPEC Inc. | Des Plaines, Illinois, United States |
