Miembros del Directorio

Makoto Kosai

Makoto Kosai graduated from the University of Tokyo (Department of Aerospace Engineering) and started his career at Kawasaki Heavy Industries. He then received his Ph.D. in Mechanical Engineering from the University of Washington. Mr. Kosai focused on research funded by the Federal Aviation Administration.


Mr. Kosai joined the Boeing Company in 1996. At the Boeing Company, Mr. Kosai was a senior specialist engineer and was in charge of developing the algorithms on how to prevent aircraft’s primary components such as the fuselage, wings, stabilizers, and pressure bulkheads from structural failure based on Fracture Mechanics and Finite Element Analyses validated by tests and fleet data. Mr. Kosai retired from the Boeing Company in June 2020 after 40 years as a distinguished aerospace engineer.

Makoto Ishisone

Makoto Ishisone is the Managing Executive Officer and Group Chief Technology Officer of SRA Holdings, Inc., our majority shareholder. Mr. Ishisone holds the positions of Director, Corporate Officer, Chief Information Officer, and Chief Technology Officer for SRA, Inc.


Mr. Ishisone graduated from the University of Tokyo (Engineering Faculty) and has spent his entire career at SRA. Mr. Ishisone has specialized knowledge in information technology and has a wealth of experience and insight in research and development.

Masanori Arita

Masanori Arita joins the Proxim Wireless Board of Directors in August 2018. Mr. Arita is a talented and seasoned executive with over 30 years of experience across a broad spectrum of disciplines in the telecommunication and transportation industries. He brings a wealth of expertise and offers valuable insights into the connectivity, and IT needs of the Asian rail and telecom sectors.


Currently, Mr. Arita is Executive Adviser to Nippon Densetsu Kogyo Co., Ltd.; a company focused on planning, design, construction, and maintenance of railroad electrical, signaling and telecommunication systems. He brings his in-depth experience, offering guidance to a continually growing company which now has more than 15 subsidiaries and is listed on the Tokyo stock exchange (1950.T).


After graduating from Kyoto University, Mr. Arita built a career where he held executive positions in leading Japanese companies including Japanese National Railways, Japan Telecom Co. Ltd., and JR East (East Japan Railway Company). While at JR East, he was elected to be an Executive VP of UQ Communications Inc., a joint venture between KDDI Inc., a significant force in telecommunications in Japan, and JR East.