Issued Patents All Time
Showing 26–50 of 130 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9097854 | Optical device exhibiting color shift upon rotation | Matthew R. Witzman, Jason Satern, Oleg Bouevitch | 2015-08-04 |
| 8726806 | Apparatus for orienting magnetic flakes | Vladimir P. Raksha, Jay M. Holman, Paul G. Coombs, Charles T. Markantes | 2014-05-20 |
| 8498033 | Optical device exhibiting color shift upon rotation | Matthew R. Witzman, Jason Satern, Oleg Bouevitch | 2013-07-30 |
| 8343615 | Dynamic appearance-changing optical devices (DACOD) printed in a shaped magnetic field including printable fresnel structures | Vladimir P. Raksha, Paul G. Coombs, Charles T. Markantes, Alberto Argoitia | 2013-01-01 |
| 8287989 | Security image coated with a single coating having visually distinct regions | Vladimir P. Raksha, Charles T. Markantes, Paul G. Coombs | 2012-10-16 |
| 8276511 | Apparatus for orienting magnetic flakes | Vladimir P. Raksha, Jay M. Holman, Paul G. Coombs, Charles T. Markantes | 2012-10-02 |
| 8164810 | Security devices incorporating optically variable adhesive | Thomas Mayer, Scott Lamar, Neil Teitelbaum | 2012-04-24 |
| 8124217 | Structured surfaces that exhibit color by rotation | Matthew R. Witzman, Vladimir P. Raksha, Eric W. Kurman, Neil Teitelbaum | 2012-02-28 |
| 8105678 | Structured surfaces that exhibit color by rotation | Vladimir P. Raksha, Eric W. Kurman, Matthew R. Witzman, Neil Teitelbaum | 2012-01-31 |
| 7961375 | Multi-cell solid-state electrochromic device | — | 2011-06-14 |
| 7934451 | Apparatus for orienting magnetic flakes | Vladimir P. Raksha, Jay M. Holman, Paul G. Coombs, Charles T. Markantes | 2011-05-03 |
| 7880943 | Patterned optical structures with enhanced security feature | Wilfred C. Kittler, Jr., Vladimir P. Raksha, Garth Zambory | 2011-02-01 |
| 7876481 | Patterned optical structures with enhanced security feature | Vladimir P. Raksha | 2011-01-25 |
| 7773284 | Resonant cavity electrochromic device | Eric W. Kurman | 2010-08-10 |
| 7754112 | Methods for forming security articles having diffractive surfaces and color shifting backgrounds | Richard L. Bonkowski, Patrick K. Higgins, Charles T. Markantes | 2010-07-13 |
| 7744964 | Vacuum roll coated security thin film interference products with overt and/or covert patterned layers | Keith Hollingsworth, Vladimir P. Raksha | 2010-06-29 |
| 7679810 | Electrical characteristics of electrochromic devices | Eugene Anthony Fuss, Paul P. Nguyen | 2010-03-16 |
| 7667895 | Patterned structures with optically variable effects | Alberto Argoitia, Vladimir P. Raksha | 2010-02-23 |
| 7630109 | Covert security coating | Roy Bie | 2009-12-08 |
| 7608330 | High chroma optically variable color-shifting glitter comprising particles having interference structure coating | Alberto Argoitia, Kent E. Coulter | 2009-10-27 |
| 7238424 | All-dielectric optically variable pigments | Vladimir P. Raksha, Paul T. Kohlmann, Richard A. Bradley, Jr., Charles K. Carniglia, Alberto Argoitia | 2007-07-03 |
| 7235300 | Titanium-containing interference pigments and foils with color shifting properties | Charlotte R. LeGallee, Paul T. Kohlmann, Vladimir P. Raksha, Alberto Argoitia | 2007-06-26 |
| 7224528 | Optically variable security devices | Richard L. Bonkowski, Patrick K. Higgins, Charles T. Markantes | 2007-05-29 |
| 7029745 | Security articles having diffractive surfaces and color shifting backgrounds | Richard L. Bonkowski, Patrick K. Higgins, Charles T. Markantes | 2006-04-18 |
| 7005178 | Security articles having diffractive surfaces and color shifting backgrounds | Richard L. Bonkowski, Patrick K. Higgins, Charles T. Markantes | 2006-02-28 |