"In 2006, while developing the first iPhone, Apple discovered that keys placed in a pocket with the prototype could scratch its hard plastic surface and resolved to find a glass sufficiently scratch-resistant to eliminate the problem.[7][8] When Steve Jobs subsequently contacted Wendell Weeks, the CEO of Corning told him of the material the company had developed in the 1960s and subsequently mothballed. Despite the CEO's initial concern over whether the company could manufacture sufficient quantities for the product debut, Jobs convinced Weeks to produce the glass, and Corning's factory in Harrodsburg, Kentucky supplied the screens for the product's release in June 2007.[6] Corning further developed the material for a variety of smartphones and other consumer electronics devices for a range of companies.[9][3][10]"
http://en.wikipedia.org/wiki/Gorilla_Glass
Steve Jobs convinced Corning to start producing Gorilla Glass for mass manufacturing out of an idea from the 60s, starting using it as of the original iPhone and it then went on to be used in over 1 billion smart phones as of October 2012.
We know Apple doesn't like to flaunt other brand names for its products. They don't advertise that they use Samsung chips and they don't advertise that they use Gorilla Glass. Doesn't mean that it's not true.
Let's put this myth to rest already.