申请日期 | 2025-07-14 | 申请号 | US11301990 |
公开(公告)号 | US20070132984A1 | 公开(公告)日 | 2007-06-14 |
公开国别 | US | 申请人省市代码 | 全国 |
申请人 | Gary A Ross | ||
简介 | A secure tag comprising : a carrier doped with one or more rare earth ions, and a barrier material associated with the carrier and substantially blocking low-wavelength radiation to shield the rare earth ions from low-wavelength radiation. This enables a secure tag to be fabricated that does not photoluminesce strongly in response to a low-wavelength excitation radiation source. |
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