The woman who holds the most US patents (more than 140) is Esther Takeuchi, a prolific energy storage expert. She’s known for developing the battery that made implantable cardiac defibrillators possible, she’s a professor at SUNY’s University at Buffalo. Takeuchi is using her battery knowledge to tackle transport and the power grid.
Source cited: http://www.smartplanet.com/people/blog/pure-genius/battery-expert-and-woman-with-most-us-patents-on-her-next-innovation/3996/