| 10920081 |
Leuco dye pastel coloring kit |
JoAnn Domanski |
2021-02-16 |
| 10597537 |
Leuco dye pastel marking device |
JoAnn Domanski |
2020-03-24 |
| 8841063 |
Illumination sources and subjects having distinctly matched and mismatched narrow spectral bands |
Norman A. Gardner, Edward H. Bell |
2014-09-23 |
| 8822374 |
Color-changing marking implement and substrate |
JoAnn Domanski |
2014-09-02 |
| 8551683 |
Illumination sources and subjects having distinctly matched and mismatched narrow spectral bands |
Norman A. Gardner, Edward H. Bell |
2013-10-08 |
| 8053494 |
Invisible ink and scratch pad |
JoAnn Domanski |
2011-11-08 |
| 7939239 |
Illumination sources and subjects having distinctly matched and mismatched narrow spectral bands |
Norman A. Gardner, Edward H. Bell |
2011-05-10 |
| 6861012 |
Latent inkjet formulation and method |
Norman A. Gardner |
2005-03-01 |
| 6813011 |
Process for blending of ink used in counterfeit detection systems |
Norman A. Gardner |
2004-11-02 |
| 6672718 |
Aqueous latent image printing method and aqueous latent image printing ink for use therewith |
— |
2004-01-06 |
| 6114281 |
Method and compositions for authenticating a product or document |
Blake Quenten Belding, JoAnn Silknitter, Kevin Bruce Stevenson |
2000-09-05 |
| 5786509 |
Method and compositions for authenticating a product or document |
Blake Quenten Belding, JoAnn Silknitter, Kevin Bruce Stevenson |
1998-07-28 |
| 5595590 |
Method and compositions for authenticating a product or document |
Blake Quenten Belding, JoAnn Silknitter, Kevin Bruce Stevenson |
1997-01-21 |