Final answer:
IBM received the most U.S. patents in 2013 as technological innovation, particularly since the internet's invention, significantly increased patent applications and grants with the USPTO.
Step-by-step explanation:
The company receiving the most U.S. patents in 2013 was IBM (International Business Machines). The surge in technological advances, particularly since the invention of the internet, has significantly increased the total number of patent applications filed with the U.S. Patent and Trademark Office (USPTO). According to the USPTO's 2015 statistics, the volume of patents granted has grown exponentially, reflecting the ongoing innovation in various industries.