Fuel Cells Continue to Lead in US Clean Energy Patents
13 Apr 2012
The CEPGI 2011 Year in Review, published by the Cleantech Group at Heslin Rothenberg Farley & Mesiti PC, shows the fuel cell sector still leading the Clean Energy Patent Growth Index (CEPGI) for US patents in clean energy technologies.
The CEPGI tracks the annual granting of patents by the US Patent and Trademark Office in the following energy sectors: solar, wind, hybrid/electric vehicles, fuel cells, hydroelectric, tidal/wave, geothermal, biomass/biofuels, and other clean renewable energy. Fuel cell technology has led the index by a considerable margin since it began in 2002.
Despite the number of fuel cell patents being slightly down on the previous year, the fuel cell sector still had 952 patents in 2011, well ahead of solar power patents at 541 and wind power at 86.
Fuel cell companies and multinationals with interests in fuel cell technology dominate the top-ten clean energy patent assignees: Honda, GM, Toyota, Samsung, Nissan, Ballard Power Systems, UTC Power/UTC Fuel Cells. Plug Power, Panasonic/Matsushita, Delphi Technologies, Hyundai and IdaTech also all featured in the top twenty names.
Reference: Clean Energy Patent Growth Index, via Environmental Leader
The CEPGI 2011 Year in Review can be read here.
Further reading: The Fuel Cell Today 2011 Patent Review