| Company | Location |
|---|---|
| ACI Laser GmbH | 99428 Grammetal OT Nohra, Germany |
| Aclara BioSciences | Mountain View, California, United States |
| Acreo AB | Kista, Sweden |
| Actel Corp. | Mountain View, California, United States |
| Activest | Munich, Germany |
| Acusphere, Inc. | Tewksbury, Massachusetts, United States |
| Acutronic USA Inc. | Pittsburgh, Pennsylvania, United States |
| Ad-Nano Technologies Private Limited | Shimoga, Karnataka, India |
| Adaptive Materials Inc. | Ann Arbor, Michigan, United States |
| ADCO Circuits | Rochester Hills, Michigan, United States |
