Honda and GM will be working together on fuel
cell research to develop next-generation fuel cell system and hydrogen storage
technologies as indicated in a Wall Street Journal article here and a
press release here
citing the Clean Energy Patent Growth Index (www.cepgi.com)
published by the Cleantech Group at Heslin Rothenberg Farley &
Mesiti. GM and Honda are the top two US fuel cell patent owners since
2002, and took second and third place in 2012, according to the CEPGI.