C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
96/76
C03C 3/04 (2006.01) C03C 4/06 (2006.01)
Patent
CA 1093367
Kerko-Tick 4-3 COPPER-CADMIUM-SILVER PHOTOCHROMIC GLASS Abstract of the Disclosure Copper, cadmium, silver and halogen-containing glass compositions suitable for the production of photochromic glass articles comprising these constituents in a separated, particulate photochromic phase are described. The glasses exhibit a characteristic copper-cadmium halide absorption inflection in the near ultraviolet, and are surface-darkenable on exposure to ultraviolet and short wavelength visible light. However, they also exhibit optical bleaching charac- teristics and a variety of dark-state colors not previously obtained in surface darkening glasses.
281612
Kerko David J.
Tick Paul A.
Corning Glass Works
Gowling Lafleur Henderson Llp
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