| Company | Location |
|---|---|
| Capsulution NanoScience AG | Berlin, Germany |
| CarboLex Inc. | Lexington, Kentucky, United States |
| Carbon and Energy Professionals New Zealand | Wellington, New Zealand |
| Carbon Nanotechnologies Inc. | Houston, Texas, United States |
| Carbon Solutions Inc. | Riverside, California, United States |
| Carborundum Universal Ltd | Ernakulam, Kerala, India |
| CardioMEMS Inc. | Atlanta, Georgia, United States |
| Carl Zeiss | Oberkochen, Germany |
| Carl Zeiss MicroImaging, Inc. | Thornwood, New York, United States |
| Carl Zeiss SMT | Peabody, Massachusetts, United States |
