If you want to highlught a company that had a greater impact on controller history, write about Atari. They introduced a whole buch of stuff to gaming, including paddle controllers, joysticks, and trakballs.
In all these other posts, I missed this link. Very cool! Also I learned that something I thought was true was not-- that Sony had innovated the handles on controllers. The NES MAX did it first (Sony popularized, though).