Colored glasses and method

Details Colored glasses and method Colored glasses and method

1992-10-30

1994-01-04

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 56, C03C 406, C03C 311

Patent

active

052759792

ABSTRACT:
Thermally induced color is developed in a glass article containing a silver halide crystal phase by including in the glass batch a thermal reducing agent, retaining the thermal reducing agent in its lower valence state while meltinq the batch and forming the glass article and subsequently heat treating the article to partially reduce the silver halide crystal phase.

REFERENCES:
patent: 3892582 (1975-07-01), Simms
patent: 3920463 (1975-11-01), Simms
patent: 4134747 (1979-01-01), Pierson et al.
patent: 4240836 (1980-12-01), Borrelli et al.
patent: 4390635 (1983-06-01), Morgan
patent: 4757034 (1988-07-01), Prassas
patent: 4891336 (1990-01-01), Prassas
patent: 5023209 (1991-06-01), Grateau et al.

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