The Clean Energy Patent Growth Index (CEPGI), published quarterly by the Cleantech Group at Heslin Rothenberg Farley & Mesiti P.C. provides an indication of the trend of innovative activity in the Clean Energy sector from 2002 to the present. Results from the Q1 2012 reveal the CEPGI to have a value of 694 granted U.S. patents, the highest quarter
A Bright Spot for Renewable Energy? Clean Energy Patents at Quarterly High
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