He had a gift for making very complex science understandable. As a scientist he had the vision to push commercialization while many were content with basic research. The company he founded has an incredible string of nanotech patents. His high-pressure, carbon monoxide process for making nanotubes holds the promise of making a refinery waste gas into the world's most valuable and versatile new material, single walled carbon nanotubes. I'm sure there will be informative eulogies written.
Thanks.