Patent ID: 6849566

Claim:
A blue-green colored glass composition, comprising: a base portion comprising: SiO 2 65 to 75 weight percent, Na 2 O 10 to 20 weight percent, CaO 5 to 15 weight percent, MgO 0 to 5 weight percent, Al 2 O 3 0 to 5 weight percent, K 2 O 0 to 5 weight percent, and major colorants comprising: Fe 2 O 3 (total iron) 0.7 to 0.9 weight percent, FeO 0.2 to 0.3 weight percent, and CoO 1 to 5 ppm, and TiO 2 0.1 to 2.0 weight percent, wherein the glass is characterized by a dominant wavelength in the range of 490 nm to 495 nm, an excitation purity in the range of 7.5% to 10% and an ISOV value greater than 30 percent at a thickness of 0.129 inch.