Crain’s Chicago Business asked Ocean Tomo to identify the leading Illinois companies for patent invention in 2013. The study, which ranks companies and institutions in the state of Illinois with three of more issued patents in 2013, was performed using the Ocean Tomo Ratings™ system and appears in the March 30th– April 5th issue of Crain’s Chicago Business.

To coincide with this publication, we have published the ranking of companies by city. You can request this full report here.