| # | Name | Location | Applications |
|---|---|---|---|
| 1. | EKK JAPAN INC. | 🇯🇵 Tochigi, Japan | 1 |
| 2. | Ekko Audio, LLC | 🇺🇸 North Port, FL, United States | 1 |
| 3. | EKKOO REGISTRY, LLC | 🇺🇸 Aptos, CA, United States | 2 |
| 4. | EKKOSENSE LTD. | 🇬🇧 Lincoln, United Kingdom | 1 |
| 5. | EKKYO | 🇫🇷 Aix en Provence, France | 2 |
| 6. | EKKYO | 🇫🇷 Aix En Provence Cedex 3, France | 1 |
| 7. | EKKYO | 🇫🇷 Meyreuil, France | 2 |