California led Michigan and New York in the number of clean energy patents awarded in the third quarter of 2013.
Heslin Rothenberg Farley & Mesiti PC released its results for the Clean Energy Patent Growth Index (CEPGI). The CEPGI tracks the granting of patents in the Clean Energy sector and monitors important technological breakthroughs in this field. Solar patents led fuel cell patents for the second straight quarter as that technology again lagged
GM and Toyota won the quarterly contest with GM, which has been alternating between the two companies. The US led all countries in granted US clean energy patents.
Solar patents fell 21 (225) from the second quarter but again topped fuel cell patents (195).