| Company | Location |
|---|---|
| ASME International | New York, New York, United States |
| ASML Special Applications | Veldhoven, Netherlands |
| Aspen Technologies | Colorado Springs, Colorado, United States |
| Assay Designs Inc. | Ann Arbor, Michigan, United States |
| Asterand Inc. | Detroit, Michigan, United States |
| Asylum Research | Santa Barbara, California, United States |
| ASYST Technologies LLC | Kenosha, Wisconsin, United States |
| Atherotech Inc. | Birmingham, Alabama, United States |
| Athey Technologies | El Cerrito, California, United States |
| ATK/GASL | Ronkonkoma, New York, United States |
