AK Steel

ArcelorMittal sues Severstal, Nisshin over cold-rolled sheet patent for auto parts

1:04 pm U.S. ET | April 17, 2013
ArcelorMittal USA, part of the world's biggest steelmaker, sued units of OAO Severstal, Russia's second-largest steelmaker, and Nisshin Steel Holdings for allegedly infringing a patent for metal used in auto parts.... Read More »

 

ArcelorMittal wins revival of patent suit against AK Steel

12:04 pm U.S. ET | Nov. 30, 2012
ArcelorMittal won a revival of its patent-infringement case against AK Steel over a process to make steel stronger so it can be used in automobile manufacturing.... Read More »