发明名称 |
SECURITY FEATURE |
摘要 |
<p>A security feature having unique photoluminescent properties and a method for making the security feature. The security feature includes a silica carrier and a rare earth dopant dispersed throughout at least a portion of the silica carrier. The rare earth dopant includes a rare earth ion to which ligands and/or inorganic sensitizers are associated. The ligands and/or inorganic sensitizers are positioned to absorb energy and transfer the absorbed energy to the rare earth ion.</p> |
申请公布号 |
WO2008085270(A1) |
申请公布日期 |
2008.07.17 |
申请号 |
WO2007US25502 |
申请日期 |
2007.12.13 |
申请人 |
NCR CORPORATION;ROTH, JOSEPH, D. |
发明人 |
ROTH, JOSEPH, D. |
分类号 |
C09C1/28;C09D5/29;C09D7/12 |
主分类号 |
C09C1/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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