| Carlyle Group | Washington, District Of Columbia, United States |
| Carnegie Mellon University - Electrical and Computer Engineering | Pittsburgh, Pennsylvania, United States |
| Cascade Microtech Inc. | Beaverton, Oregon, United States |
| Case Western Reserve University | Cleveland, Ohio, United States |
| Catalan Institute of Nanotechnology (ICN) | Barcelona, Spain |
| Catalyst Equipment Corp. | Plano, Texas, United States |
| Catalysta Partners LLC | Atlanta, Georgia, United States |
| Catalytic Materials LLC | Holliston, Massachusetts, United States |
| Catalytica Energy Systems Inc. | Mountain View, California, United States |
| Caterpillar Inc. | Peoria, Illinois, United States |