| Company | Location |
|---|---|
| Potomac Photonics | Lanham, Maryland, United States |
| Potomac Photonics Inc. | Lanham, Maryland, United States |
| Powdermet Inc. | Euclid, Ohio, United States |
| Power Chips plc | Gibraltar, Spain |
| Power Paper Ltd. | Kiryat Arye, Petah Tikva, Israel |
| Powergenix | San Diego, California, United States |
| PowerZyme Inc. | Summit, New Jersey, United States |
| Praxair Surface Technologies | Indianapolis, Indiana, United States |
| Precision Combustion Inc. | North Haven, Connecticut, United States |
| Precision Photonics | Boulder, Colorado, United States |
