Patent ID: 6846760

Claim:
A flat float glass comprising: platinum, rhodium, zinc oxide, and tin dioxide, wherein: the concentration of said platinum is contained in a non-zero amount less than 300 parts per billion; the concentration of said rhodium is contained in a non-zero amount less than 30 parts per billion; the concentration of said zinc oxide is contained in a non-zero amount less than 1.5 weight percent; the concentration of said tin dioxide is contained in a non-zero amount less than 1 weight percent; said concentrations of said platinum, said rhodium, said zinc oxide, and said tin dioxide configuring said flat float glass to have minimized surface defects; and said flat float glass being configured to be one of: prestressable into a glass-ceramic comprising one of: high quartz mixed crystals; and keatite mixed crystals; and transformable into a glass-ceramic comprising one of: high quartz mixed crystals; and keatite mixed crystals.