Patent ID: 8333907
Filing Date: 2012-12-18
Classification: C09K,Y10T

Abstract:
1. An article of manufacture comprising: a structure, wherein the structure is one selected from a group consisting of: a security system device, a portion of a security system device, a fire system device and a portion of fire system device; at least one of a persistent phosphor and a persistent phosphor blend, wherein the persistent phosphor and the persistent phosphor blend is one of: wherein the persistent phosphor comprises a first phosphor and optionally a second phosphor and the persistent phosphor blend comprises a first persistent phosphor blend and optionally a second persistent phosphor blend, wherein the first phosphor is at least one of: wherein the second phosphor comprises a general formula of A RE is Dy, Nd, or a combination thereof; and wherein the first persistent phosphor blend comprises: wherein the second persistent phosphor blend comprises: