-- General Electric Co., the biggest maker of wind turbines in the U.S., wants a trade agency to block Mitsubishi Heavy Industries Ltd. from importing rival energy equipment to the U.S.

Turbines made by Mitsubishi, Japan’s largest heavy- machinery maker, infringe three patents, GE lawyer Scott Breedlove told U.S. International Trade Commission Judge Carl Charneski today.

The technology being used brought “wind energy into the mainstream,” Breedlove said in opening arguments to the judge. Mitsubishi is using the inventions “in a pretty straightforward fashion.”