| # | Name | Location | Applications |
|---|---|---|---|
| 1. | R F Engines Limited | 🇬🇧 Isle of Wight, United Kingdom | 1 |
| 2. | R.F. Engines Limited | 🇬🇧 Isle of Wight, United Kingdom | 1 |
| 3. | RF elements s.r.o. | 🇸🇰 Bratislava, Slovak Republic | 10 |
| 4. | RFE Pharma LLC | 🇺🇸 Framingham, MA, United States | 4 |
| 5. | RFEMB HOLDINGS, LLC | 🇺🇸 Orlando, FL, United States | 1 |