Yoshiyuki Sankai


Founder of medical robotics company Cyberdyne, Sankai, 57, invented the Robot Suit HAL (Hybrid Assistive Limb), which is essentially robotic limbs that help old or physically impaired people regain their mobility. Nearly 500 of these suits are now being used in hospitals and nursing homes and Sankai is currently working on creating more agile and affordable suits. Earlier this year, his firm invested in Cyfuse Biomedical K.K., a regenerative medicine startup which fabricates three-dimensional cellular structures.  



Net worth:

US$1.07 billion