| ULTRASOUND BOOTS (ASIA) LIMITED | Private company limited by shares | Live |
| ULTRASOUND BOOTS LIMITED | Private company limited by shares | Live |
| ULTRA-SOUND DIAGNOSTICS LIMITED | Private company limited by shares | Dissolved |
| Focused Ultrasound Hong Kong Foundation Limited | Company limited by guarantee | Live |
| ULTRASOUND INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ULTRASOUND INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Focused Ultrasound Medical Research Foundation Limited | Company limited by guarantee | Live |
| Focused Ultrasound Surgery Association Limited | Company limited by guarantee | Live |
| Ultrasound Technology Co., Limited | | Live |
| GENERAL ULTRASOUND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| PACIFIC ULTRASOUND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ULTRASOUND TRADING LIMITED | Private company limited by shares | Live |
| Ultrasound Wondering Inc Limited | Private company limited by shares | Live |