1931 – E.I. DuPont announces to the world they have come up with a new substance that is a Synthetic rubber called DuPrene. Made from Acetylene, salt and rubber, this combination would eventually be renamed NeoPrine in 1937. The announcement was made at the American Chemical Society in Akron, Ohio. This Day in Tech History podcast show notes for November 2 2001 – Microsoft and the U.S. Department of Justice reach terms on Antitrust 2002 – DeLi Linux is released 2007 – Lenovo removes IBM label from computers