High Quality Content by WIKIPEDIA articles! Cooper Industries is a former US-based company that in 2009 switched its incorporation office from Bermuda to Ireland, maintaining its chief operational offices in Houston, Texas. It produces transformers, tools and electrical equipment, employing 29,000 staff around the world. Revenue in 2007 was US$5.9 billion dollars. It is one of the oldest large companies originating in the United States, having been founded in 1833.