发明名称 |
Size dependent marker codes |
摘要 |
A security marker material comprising emissive particles selected from at least two groups with different size distributions and the size distributions satisfy the formula: [(x−z)2/(Sx2+Sz2)]1/2>1 wherein x and z are the volume-weighted mean equivalent-spherical diameters of the two particle distributions and Sx and Sz are the standard deviations of the same two distributions. |
申请公布号 |
US8398888(B2) |
申请公布日期 |
2013.03.19 |
申请号 |
US201213371718 |
申请日期 |
2012.02.13 |
申请人 |
OLM MYRA T.;PAWLIK THOMAS D.;ALLMANN ERWIN L.;EASTMAN KODAK COMPANY |
发明人 |
OLM MYRA T.;PAWLIK THOMAS D.;ALLMANN ERWIN L. |
分类号 |
C09K11/01;G01J1/58;G01T1/20 |
主分类号 |
C09K11/01 |
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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