| Company | Timeline | Status | |
| England Karate-Do Ryobu-Kai Limited Secretary • Unreported | 1 Mar 2004←21 Years→29 Aug 2025 | Dissolved | |
| Ryobu-Kai Karate Limited Secretary • Unreported | 1 Mar 2004←21 Years→29 Aug 2025 | Dissolved | |
| Japan Karate-Do Ryobu-Kai Limited Secretary • Unreported | 1 Mar 2004←21 Years→29 Aug 2025 | Dissolved | |
