◆Fields of Expertise 
• International Law
◆Publications  (only articles published in English since 2009)
-"II. Practical Background (for the 2013 NatLeg Resolution", in Hobe・Schmidt-Tedd・Schrogl (eds.), Cologne Commentary on Space Law (Carl Heymanns Verlag, 2015), pp.503-535;
-"Analysis of the Legal Instruments Operating the ISS as the Most Complex Space Program Ever Undertaken: from historical perspective", Proceedings of the International Institute of Space Law 2014, pp.367-382;
-"Efficient and Equitable Use of Orbit by Satellite Systems: "Paper Satellite" Issues Revisited", Proceedings of the International Institute of Space Law 2013 (2014), pp. 229-246;
"The Standard of Due Diligence in Operating a Space Object", Proceedings of the International Institute of Space Law 2012 (2013) pp. 392-405;
-"The Function of Soft Law in the Development of International Space Law", in Irmgard Marboe ed., Soft Law in Outer Space, Böhlau (2012), pp.57-85;
-"Japanese Space Activities Act in the Making," Zeitshcrift für Luft-und Weltraumrecht, vol.61, no.1 (2012), pp.111-128;
-"In Search of the Current Legal Status of the Registration of Space Objects", Proceedings of the International Institute of Space Law 2010 (2011), pp. 245-261;
-"Japanese Law and Regulations Concerning Remote Sensing Activities", 36 Journal of Space Law (2010), pp.335-364;
-"The "Necessary Legal Conditions to Promote Space Commerce in Asia", Korean Journal of Air and Space Law, Special Issue (2010), pp.127-150;
-"The First Basic Space Plan of Japan: What Will Be Changed?", Proceedings of the International Space Law 2009 (2010), pp.413-425;
-"Space Arms Control: Challenges and Alternatives", 52 Japanese Yearbook of International Law (2009), 191-230;
-"Current Status and Recent Developments in Japan's National Space Law and its Relevance to Pacific Rim Space Law and Activities" 35 Journal of Space Law,(2009) pp.363-438;
-"Space Traffic Management' for the Prevention of Weaponization in Outer Space" Proceedings of the International Institute of Space Law 2008 (2009) pp.154-170.
◆Other
Academic Societies
International Institute of Space Law (IISL) (board member);
International Law Association (ILA) (member of Space Law Committee from Japan);
The Japanese Association of World Law (board member);
The Air Law Institute of Japan (board member);
The Japan Association of International Security and Trade (board member).
The Japanese Society of International Law (member of Research Planning Committee).
Present positions in the government include: member of the Committee on National Space Policy (Cabinet Office of Japan) since July 2012; and legal advisor of the Ministry of Foreign Affairs of Japan to the Legal Subcommittee of the Committee on the Peaceful Uses of Outer Space (COPUOS) since March 2002.
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