http://en.wikipedia.org/wiki/List_of_devices_with_Gorilla_Glass
Was talking to a guy who just bought a Samsung S5, I have the S4.
As he showed it to me, I asked if he bought the scratch resistent 3 Pak kit to protect the screen, teling when I got the S4 Verizon highly recommended it...$20.
He said, "no I did not because the screen is Corning Gorilla Glass."
He asked me to scratch his phone hard as I want with a key..."no way." So he gets his keys and did it...not a single scratch!
So he says, "the S4 has this glass too, Verizon ripped you off for $20."
Sorry if OT, but somehow I have a faint memory that UNXL was part of this?