The Influence of Patents in Twenty R&D Portfolios Funded by the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy

This report provides a synthesis of a series of recent patent analyses carried out for the Office of Critical Minerals and Energy Innovation (CMEI) in the U.S. Department of Energy (DOE). These analyses trace the influence of patents in twenty different research portfolios selected by nine CMEI research and development (R&D) offices for the period 1976-2018. There are two main objectives of the analyses described in this report: to locate key patents awarded for CMEI office-funded innovations; and to determine the extent to which CMEI-funded research has influenced subsequent technological developments associated with other organizations. The study measures this influence primarily by tracing citation links between successive generations of patents.