1. Graduate School of Frontier Science The University of Tokyo Bunkyo City Tokyo Japan
2. Development Section 1 Energy Units Development Dept. Advanced Products Development Center Technology and Intellectual Property HQ TDK Corporation Chuo City Tokyo Japan
3. R&D Division System Power Supply Department WPT Development Group TDK‐Lambda Corporation Tokyo Japan
4. New Product Development Department Technical Research Office NSK Ltd. Shinagawa City Tokyo Japan
5. BR NEXT GENERATION LOGISTICS DIV. SHINMEI INDUSTRY CO., Ltd. Chuo City Tokyo Japan
6. Central Japan Business Dept. TOYOTA T&S CONSTRUCTION CO., LTD. Hiruta Otawara Tochigi Japan
7. Strategy Planning & Administration Dept. Vehicle Logistics Div. TOYOTA MOTOR CORPORATION Toyota City Aichi Japan