Together with Mooney, Keith was honored by the United States Patent and Trademark Office with the 2002 National Medal of Technology, awarded "For the invention, application to automobiles, and commercialization of the three-way catalytic converter. Through their persistent efforts, this technology is the key emission-control component in all new light-duty vehicles in the United States and throughout the world."National Medal of Technology Recipients for 2002 , United States Patent and Trademark Office. Accessed November 15, 2008.
