Key Wind Players also Key Patent Owners?

Wind Installations continued to grow in 2012 while investments in R & D for wind energy have resulted in technological advances in the last few years including those related to large off shore turbines, new vessels for installing off shore machines, and new ways to transport large blades on dry land according to Renewable Energy World here.  Further innovations have occurred in both low and high speed turbines, and technologies that reduce operations and maintenance costs, among other technologies as described.