High refractive index glass beads for high retroreflectivity...

Details High refractive index glass beads for high retroreflectivity... High refractive index glass beads for high retroreflectivity...

2006-05-16

2006-05-16

Le, H. Thi (Department: 1773)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S034000, C501S055000, C501S065000, C501S066000, C501S067000, C501S068000, C501S069000, C501S070000, C501S072000, C428S402000

Reexamination Certificate

active

07045475

ABSTRACT:
Glass formulations, and a method of converting such glass formulations to glass beads having a refractive index of at least 1.59 and a high level of retroreflectivity, are provided. The methods and formulations provide beads also having high levels of resistance to degradation by environmental exposure.

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