Dragontrail, manufactured by Asahi Glass Co., is an alkali-aluminosilicate sheet glass engineered for a combination of thinness, lightness and damage-resistance, similar to Corning's Gorilla Glass. The material's primary properties are its strength, allowing thin glass without fragility; its high scratch resistance; and its hardness – with a Vickers hardness test rating of 595 to 673.
Cell-phones
To date, some of the cell-phone models that have incorporated this type of protection are:
References
Dragontrail Wikipedia(Text) CC BY-SA