	US 11,814,315 B2
	Low iron, high redox ratio, and high iron, high redox ratio, soda-lime-silica glasses and methods of making same
Mark O. Naylor, Pittsburgh, PA (US); Lawrence E. Jansen, Burkburnett, TX (US); and Larry J. Shelestak, Bairdford, PA (US)
Assigned to Vitro Flat Glass LLC, Cheswick, PA (US)
Filed by Vitro Flat Glass LLC, Cheswick, PA (US)
Filed on Jun. 30, 2020, as Appl. No. 16/916,209.
Application 15/046,938 is a division of application No. 14/252,206, filed on Apr. 14, 2014, abandoned.
Application 16/916,209 is a continuation of application No. 15/046,938, filed on Feb. 18, 2016, granted, now 10,737,970.
Claims priority of provisional application 61/812,006, filed on Apr. 15, 2013.
Prior Publication US 2020/0331794 A1, Oct. 22, 2020
Int. Cl. C03C 3/087 (2006.01); C03C 4/02 (2006.01); C03B 18/12 (2006.01); C03C 4/00 (2006.01); C03C 3/095 (2006.01)

CPC C03C 3/087 (2013.01) [C03B 18/12 (2013.01); C03C 3/095 (2013.01); C03C 4/0092 (2013.01); C03C 4/02 (2013.01)]

17 Claims

1. A glass, comprising:

a basic soda-lime-silica glass portion, wherein the basic soda-lime-silica glass portion comprises:


	SiO₂	65-80 wt. %
	Na₂O	10-20 wt. %
	CaO	5-15 wt. %
	MgO	0-8 wt. %
	Al₂O₃	0-5 wt. %
	K₂O	0-5 wt. %;

and

a colorant portion, the colorant portion comprising:

total iron as Fe₂O₃in the range of at least 0.10 to no more than 2.00 weight percent, a redox ratio in the range of 0.35 to 0.6, and tin in an amount within the range of 0.4 to 3.0 weight percent;

wherein the glass product has a tin side and an opposite air side, said tin side of the glass having a higher concentration of tin than the air side, the air side having a uniform concentration of tin from the air side of the glass product towards the tin side of the glass product.