They are corporate giants, employing thousands of Connecticut residents at their headquarters and generating hundreds of millions in tax dollars each year.

But much of the tax revenue paid by Connecticut’s largest corporate citizens goes to a tiny coastal state south of New Jersey. Among the largest U.S. companies that do business in Connecticut, more than half, including General Electric and United Technologies Corp., are registered as Delaware corporations. As a result, much of their litigation is handled in Delaware state courts, resulting in lost dollars for Connecticut and its corporate lawyers.