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Characteristic verification system |
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2015-11-10 |
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System and method for providing tangible medium with electromagnetic security marker |
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2015-10-13 |
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Illumination sources and subjects having distinctly matched and mismatched narrow spectral bands |
Edward H. Bell, Terry Stovold |
2014-09-23 |
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Illumination sources and subjects having distinctly matched and mismatched narrow spectral bands |
Edward H. Bell, Terry Stovold |
2013-10-08 |
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Illumination sources and subjects having distinctly matched and mismatched narrow spectral bands |
Edward H. Bell, Terry Stovold |
2011-05-10 |
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Latent inkjet formulation and method |
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2005-03-01 |
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Process for blending of ink used in counterfeit detection systems |
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2004-11-02 |
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Counterfeit detection system |
— |
2002-11-19 |
| 4632429 |
Method of rendering documents resistant to photocopying and anti-copying paper therefor |
Michael Voticky |
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| 4522429 |
Method of rendering documents resistant to photocopying, and anti-copying paper and ink therefor |
Michael Voticky |
1985-06-11 |