Ultraviolet/infrared absorbent low transmittance glass

Details Ultraviolet/infrared absorbent low transmittance glass Ultraviolet/infrared absorbent low transmittance glass

2004-03-16

2008-07-01

Lorengo, Jerry A. (Department: 1793)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S070000, C501S904000, C501S905000

Reexamination Certificate

active

07393802

ABSTRACT:
An ultraviolet/infrared absorbent low transmittance glass is formed of base glass containing 65 to 80 wt. % SiO2; 0 to 5 wt. % Al2O3; greater than 2.1 to less than or equal to 10 wt. % MgO; 5 to 15 wt. % CaO wherein a total amount of MgO and CaO is 7 to 15 wt. %; 10 to 18 wt. % Na2O; 0 to 5 wt. % K2O wherein a total amount of Na2O and K2O is 10 to 20 wt. %; and 0 to 5 wt. % B2O3, and colorants including 1.25 to 2.2 wt. % total iron oxide (T-Fe2O3) expressed as Fe2O3; 0.001 to 0.018 wt. % CoO; 0 to 0.0004 wt. % Se; and 0.028 to 0.2 wt. % NiO, wherein the glass has a turquoise blue or deep green color.

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