Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6759097 | Methods for producing imaged coated articles by using magnetic pigments | Roger W. Phillips, Charlotte R. LeGallee, Paul G. Coombs, Matthew R. Witzman | 2004-07-06 |
| 6749936 | Achromatic multilayer diffractive pigments and foils | Alberto Argoitia, Paul T. Kohlmann, Matthew R. Witzman, Paul G. Coombs, Richard A. Bradley, Jr. | 2004-06-15 |
| 6576294 | Method for forming barrier film | Roger W. Phillips, Lauren R. Wendt, Myra Tan-Johnson, David W. Todd | 2003-06-10 |
| 6473165 | Automated verification systems and methods for use with optical interference devices | Paul G. Coombs, Donald M. Friedrich, Ken D. Cardell, Curtis R. Hruska | 2002-10-29 |
| 6114018 | Paired optically variable article with paired optical structures and ink, paint and foil incorporating the same and method | Roger W. Phillips, Shari Powell Fisher, Robert G. Slusser, Patrick K. Higgins, Anton Bleikolm | 2000-09-05 |
| 5766738 | Paired optically variable article with paired optically variable structures and ink, paint and foil incorporating the same and method | Roger W. Phillips, Shari Powell Fisher, Robert G. Slusser, Patrick K. Higgins, Anton Bleikolm | 1998-06-16 |
| 5596402 | Viewing device and method for ascertaining simultaneously optical color shift characteristics of an optically variable device | Roger W. Phillips | 1997-01-21 |
| 5424119 | Polymeric sheet having oriented multilayer interference thin film flakes therein, product using the same and method | Roger W. Phillips, Paul G. Coombs, Patrick K. Higgins | 1995-06-13 |